UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-CSR

                   CERTIFIED SHAREHOLDER REPORT OF REGISTERED
                         MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number 811-6567

                     Van Kampen Municipal Opportunity Trust
 ------------------------------------------------------------------------------
               (Exact name of registrant as specified in charter)


              1221 Avenue of the Americas New York, New York 10020
 -------------------------------------------------------------------------------
               (Address of principal executive offices) (Zip code)


                                 Ronald Robison
              1221 Avenue of the Americas New York, New York 10020
 -------------------------------------------------------------------------------
                     (Name and address of agent for service)

Registrant's telephone number, including area code: 212-762-4000

Date of fiscal year end: 10/31

Date of reporting period: 10/31/04




 
Item 1.  Reports to Shareholders.

The Trust's annual report transmitted to shareholders pursuant to Rule 30e-1
under the Investment Company Act of 1940 is as follows:
 
       Welcome, Shareholder
 
       In this report, you'll learn about how your investment in Van Kampen
       Municipal Opportunity Trust performed during the annual period. The
       portfolio management team will provide an overview of the market
       conditions and discuss some of the factors that affected investment
       performance during the reporting period. In addition, this report
       includes the trust's financial statements and a list of trust investments
       as of October 31, 2004.
 
       MARKET FORECASTS PROVIDED IN THIS REPORT MAY NOT NECESSARILY COME TO
       PASS. THERE IS NO ASSURANCE THAT THE TRUST WILL ACHIEVE ITS INVESTMENT
       OBJECTIVE. TRUSTS ARE SUBJECT TO MARKET RISK, WHICH IS THE POSSIBILITY
       THAT THE MARKET VALUES OF SECURITIES OWNED BY THE TRUST WILL DECLINE AND
       THAT THE VALUE OF TRUST SHARES MAY THEREFORE BE LESS THAN WHAT YOU PAID
       FOR THEM. ACCORDINGLY, YOU CAN LOSE MONEY INVESTING IN THIS TRUST.
 
       INCOME MAY SUBJECT CERTAIN INDIVIDUALS TO THE FEDERAL ALTERNATIVE MINIMUM
       TAX (AMT).
 


                                                                    
         ---------------------------------------------------------------------------------------
            NOT FDIC INSURED             OFFER NO BANK GUARANTEE              MAY LOSE VALUE
         ---------------------------------------------------------------------------------------
                   NOT INSURED BY ANY FEDERAL GOVERNMENT AGENCY               NOT A DEPOSIT
         ---------------------------------------------------------------------------------------


 
Performance Summary as of 10/31/04
 


MUNICIPAL OPPORTUNITY TRUST
SYMBOL: VMO
---------------------------------------------------------
AVERAGE ANNUAL                   BASED ON      BASED ON
TOTAL RETURNS                      NAV       MARKET PRICE
                                       
 
Since Inception (4/24/92)         8.21%          7.27%
 
10-year                           9.05           9.01
 
5-year                            9.80          10.76
 
1-year                            8.05          -0.60
---------------------------------------------------------

 
PERFORMANCE DATA QUOTED REPRESENTS PAST PERFORMANCE, WHICH IS NO GUARANTEE OF
FUTURE RESULTS, AND CURRENT PERFORMANCE MAY BE LOWER OR HIGHER THAN THE FIGURES
SHOWN. FOR THE MOST RECENT MONTH-END PERFORMANCE FIGURES, PLEASE VISIT
VANKAMPEN.COM OR SPEAK WITH YOUR FINANCIAL ADVISOR. INVESTMENT RETURNS, NET
ASSET VALUE (NAV) AND COMMON SHARE MARKET PRICE WILL FLUCTUATE AND TRUST SHARES,
WHEN SOLD, MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST.
 
NAV per share is determined by dividing the value of the trust's portfolio
securities, cash and other assets, less all liabilities, by the total number of
common shares outstanding. The common share market price is the price the market
is willing to pay for shares of the trust at a given time. Common share market
price is influenced by a range of factors, including supply and demand and
market conditions. Total return assumes an investment at the beginning of the
period, reinvestment of all distributions for the period in accordance with the
trust's dividend reinvestment plan, and sale of all shares at the end of the
period.
 
The Lehman Brothers Municipal Bond Index is a broad-based statistical composite
of municipal bonds. The index does not include any expenses, fees or sales
charges, which would lower performance. The index is unmanaged and should not be
considered an investment. It is not possible to invest directly in an index.
 
                                                                               1

 
Trust Report
 
FOR THE 12-MONTH PERIOD ENDED OCTOBER 31, 2004
 
Van Kampen Municipal Opportunity Trust is managed by the Adviser's Municipal
Fixed Income team.(1) Current members include Dennis Pietrzak, Executive
Director; Robert Wimmel, Vice President; and John Reynoldson, Executive
Director.
 
MARKET CONDITIONS
 
The interest-rate environment of the 12 months ended October 31, 2004 was marked
by two periods of steadily declining yields, with a significant sell-off in the
middle. Yields fell steadily through the first half of the period, approaching
the historical lows of 2003. This trend persisted until March, at which point
yields reversed direction and began an upward march as prices fell. These losses
were steepest in April, as a surprisingly strong employment report and signals
from members of the Federal Open Market Committee (the "Fed") caused investors
to expect a near-term rate increase. Rates went on to decline from May through
the end of the period as the market digested the Fed's newly hawkish rate
stance. Investors were further comforted when, after the Fed raised rates at its
June 30, 2004 meeting, its members indicated that the path of future rate
increases would be measured.
 
Unusually, longer-maturity securities largely outperformed in this period of Fed
tightening. Historically, the typical pattern in periods of tightening policy
has seen yields rise across all maturities. During the review period, however,
yields of shorter maturity bonds rose while those of bonds with longer
maturities declined slightly.
 
Lower-quality municipal bonds also performed strongly in this environment, as
the difference in yields (known as the "yield spread") between AAA and BBB rated
bonds decreased by roughly 20 basis points for 20-year bonds. As a result,
sectors with heavy exposure to lower-rated debt, such as hospitals and
industrial revenue bonds, posted higher total returns than sectors dominated by
higher-rated debt.
 
Issuance for the first 10 months of 2004 (the final 10 months of the review
period) was roughly 6 percent lower than in the same period in 2003. That said,
2003 was a record year, and at the current pace of issuance, 2004 could well be
one of the largest years in recent memory. The strong supply met with faltering
demand from mutual funds, as fund investors withdrew over $15 billion in net
cash during the period. This faltering demand was largely offset by increased
participation in the market by insurance companies and individual investors.
 
(1)Team members may change without notice at any time.
 2

 
PERFORMANCE ANALYSIS
 
The trust's return can be calculated based upon either the market price or the
net asset value (NAV) of its shares. NAV per share is determined by dividing the
value of the trust's portfolio securities, cash and other assets, less all
liabilities, by the total number of common shares outstanding, while market
price reflects the supply and demand for the shares. As a result, the two
returns can differ significantly, as they did during the reporting period. On an
NAV basis, the trust outperformed its benchmark, the Lehman Brothers Municipal
Bond Index. (See table below.)
 
The trust uses leverage to enhance its dividend to common shareholders. The
trust borrows money at short-term rates through the issuance of preferred
shares. The proceeds are reinvested in longer-term securities, taking advantage
of the difference between short- and longer-term rates. The Fed's policy of
raising interest rates in the final months of the period made the trust's
borrowing activity more expensive. These expenses, however, were more than
offset by the strong performance of the bonds we invested in, leading to the
trust's outperformance versus its benchmark, which is unleveraged.
 
Interest rates spent much of the period at or near historic lows. Given these
levels, our analysis indicated that there was little room for rates to fall
further, and that as a result rates were more likely to go up than down over the
intermediate term. This analysis led us to reduce the trust's interest-rate
sensitivity to a level that was less than that of its benchmark. While this
approach served the trust well when rates rose in the late spring and early
summer, it was an overall drag on performance for the one-year period.
 
With interest rates at such low levels, several of the trust's holdings were
called away by issuers seeking to refinance their bonds at lower yields. Several
of the trust's shorter maturity bonds were also prerefunded, and we sold many of
these securities to take advantage of more compelling opportunities elsewhere.
We reinvested the proceeds into securities that we believed had attractive
total-return prospects, emphasizing bonds in the 13- to 18-year portion of the
yield curve, especially those with the relatively lower interest-rate
sensitivity. These bonds offer the dual benefit of a strong income stream and
moderate vulnerability to shifting interest rates.
 
TOTAL RETURN FOR THE 12-MONTH PERIOD ENDED OCTOBER 31, 2004
 


-----------------------------------------------------------
      BASED ON     BASED ON        LEHMAN BROTHERS
        NAV      MARKET PRICE   MUNICIPAL BOND INDEX
                                          
 
       8.05%        -0.60%              6.03%
-----------------------------------------------------------

 
PERFORMANCE DATA QUOTED REPRESENTS PAST PERFORMANCE, WHICH IS NO GUARANTEE OF
FUTURE RESULTS, AND CURRENT PERFORMANCE MAY BE LOWER OR HIGHER THAN THE FIGURES
SHOWN. INVESTMENT RETURN, NET ASSET VALUE AND COMMON SHARE MARKET PRICE WILL
FLUCTUATE AND TRUST SHARES, WHEN SOLD, MAY BE WORTH MORE OR LESS THAN THEIR
ORIGINAL COST. SEE PERFORMANCE SUMMARY FOR ADDITIONAL PERFORMANCE INFORMATION
AND INDEX DEFINITION.
                                                                               3

 
We continued to pursue relative value opportunities at the long end of the
market, buying securities when we believed they offered attractive value and
selling them once they met our performance targets in order to reinvest the
proceeds elsewhere.
 
We remained focused on keeping the trust's risk profile within a reasonable
range through attention to credit quality and diversification. By the end of the
12-month period, more than 84 percent of the trust's total investments was
invested in bonds rated AAA and AA; these represent the two highest tiers of
credit ratings. The portfolio was also well diversified across the major sectors
of the municipal bond market. Its three largest sector exposures were general
purpose, airport, and wholesale electric.
 
While it is impossible to predict the exact turning point when interest rates
will move decisively higher, we believe the trust remains well positioned for
the near future. We will continue to comb the municipal bond markets for
interesting opportunities.
 
There is no guarantee that any securities mentioned will continue to perform
well or be held by the trust in the future.
 
 4

 


RATINGS ALLOCATION AS OF 10/31/04
                                                                 
AAA/Aaa                                                              79.9%
AA/Aa                                                                 4.8
A/A                                                                  11.2
BBB/Baa                                                               2.4
B/B                                                                   0.4
Non-Rated                                                             1.3

TOP 5 SECTORS AS OF 10/31/04
                                                                 
General Purpose                                                      14.8%
Airport                                                              14.4
Wholesale Electric                                                   12.7
Health Care                                                          10.7
Public Building                                                       9.1

SUMMARY OF INVESTMENTS BY STATE CLASSIFICATION AS OF 10/31/04
                                                                 
New Jersey                                                           12.0%
Texas                                                                12.0
New York                                                              9.6
California                                                            7.6
Illinois                                                              4.9
Washington                                                            4.6
Pennsylvania                                                          4.6
Georgia                                                               4.4
North Carolina                                                        4.4
Nevada                                                                3.0
Oklahoma                                                              2.6
Colorado                                                              2.4
Ohio                                                                  2.1
Oregon                                                                2.0
West Virginia                                                         2.0
Florida                                                               1.9
Michigan                                                              1.8
Kentucky                                                              1.6
Missouri                                                              1.4
Massachusetts                                                         1.4
Connecticut                                                           1.4
Indiana                                                               1.3
District of Columbia                                                  1.3
Louisiana                                                             1.2
Maryland                                                              1.2
Arizona                                                               1.1
South Carolina                                                        1.0
Arkansas                                                              0.8
New Hampshire                                                         0.7
Alabama                                                               0.6
Tennessee                                                             0.6
Iowa                                                                  0.5
Wisconsin                                                             0.4
Mississippi                                                           0.4
South Dakota                                                          0.4
New Mexico                                                            0.3

 

                                                                 
                                                 (continued on next page)

 
                                                                               5

 


SUMMARY OF INVESTMENTS BY STATE CLASSIFICATION AS OF 10/31/04
                                           (continued from previous page)
                                                                 
Minnesota                                                             0.3%
North Dakota                                                          0.2
                                                                    -----
Total Investments                                                   100.0%

 
Subject to change daily. Provided for informational purposes only and should not
be deemed as a recommendation to buy or sell the securities mentioned or
securities in the sectors shown above. Ratings and summary of investments by
state classification are as a percentage of total investments. Sectors are as a
percentage of long-term investments. Securities are classified by sectors that
represent broad groupings of related industries. Van Kampen is a wholly owned
subsidiary of a global securities firm which is engaged in a wide range of
financial services including, for example, securities trading and brokerage
activities, investment banking, research and analysis, financing and financial
advisory services. Rating allocations based upon ratings as issued by Standard
and Poor's and Moody's, respectively.
 
 6

 
FOR MORE INFORMATION ABOUT PORTFOLIO HOLDINGS
 
       Each Van Kampen trust provides a complete schedule of portfolio holdings
       in its semiannual and annual reports within 60 days of the end of the
       trust's second and fourth fiscal quarters by filing the schedule
       electronically with the Securities and Exchange Commission (SEC). The
       semiannual reports are filed on Form N-CSRS and the annual reports are
       filed on Form N-CSR. Van Kampen also delivers the semiannual and annual
       reports to trust shareholders, and makes these reports available on its
       public web site, www.vankampen.com. In addition to the semiannual and
       annual reports that Van Kampen delivers to shareholders and makes
       available through the Van Kampen public web site, each trust files a
       complete schedule of portfolio holdings with the SEC for the trust's
       first and third fiscal quarters on Form N-Q. Van Kampen does not deliver
       the reports for the first and third fiscal quarters to shareholders, nor
       are the reports posted to the Van Kampen public web site. You may,
       however, obtain the Form N-Q filings (as well as the Form N-CSR and
       N-CSRS filings) by accessing the SEC's web site, http://www.sec.gov. You
       may also review and copy them at the SEC's Public Reference Room in
       Washington, DC. Information on the operation of the SEC's Public
       Reference Room may be obtained by calling the SEC at 1-202-942-8090. You
       can also request copies of these materials, upon payment of a duplicating
       fee, by electronic request at the SEC's e-mail address
       (publicinfo@sec.gov) or by writing the Public Reference section of the
       SEC, Washington, DC 20549-0102.
 
       In addition to filing a complete schedule of portfolio holdings with the
       SEC each fiscal quarter, each Van Kampen trust makes portfolio holdings
       information available by periodically providing the information on its
       public web site, www.vankampen.com. Each Van Kampen trust provides a
       complete schedule of portfolio holdings on the public web site on a
       calendar-quarter basis approximately 30 days after the close of the
       calendar quarter. Van Kampen closed-end funds do not presently provide
       partial lists of their portfolio holdings on a monthly basis, but may do
       so in the future.
 
       You may obtain copies of a trust's fiscal quarter filings, or its monthly
       or calendar-quarter web site postings, by contacting Van Kampen Client
       Relations at 1-800-847-2424.
 
PROXY VOTING POLICIES AND PROCEDURES AND PROXY VOTING RECORD
 
       The trust's policies and procedures with respect to the voting of proxies
       relating to the trust's portfolio securities and information on how the
       trust voted proxies relating to portfolio securities during the most
       recent twelve-month period ended June 30 is available without charge,
       upon request, by calling 1-800-847-2424 or by visiting our web site at
       www.vankampen.com. This information is also available on the Securities
       and Exchange Commission's web site at http://www.sec.gov.
 
                                                                               7

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2004
 


PAR
AMOUNT
(000)     DESCRIPTION                                     COUPON    MATURITY       VALUE
--------------------------------------------------------------------------------------------
                                                                   
          MUNICIPAL BONDS  156.2%
          ALABAMA  1.0%
$2,405    Marshall Cnty, AL Hlthcare Ser C..............   6.000%   01/01/32   $   2,543,865
     5    Mobile, AL Indl Dev Brd Solid Waste Disp Rev
          Mobile Energy Svc Co Proj Rfdg................   6.950    01/01/20              29
                                                                               -------------
                                                                                   2,543,894
                                                                               -------------
          ARIZONA  1.7%
 2,500    Arizona Sch Fac Brd Ctf Part Ser A (MBIA
          Insd).........................................   5.250    09/01/17       2,761,575
 1,500    Maricopa Cnty, AZ Stadium Dist Rfdg (AMBAC
          Insd).........................................   5.375    06/01/19       1,678,875
                                                                               -------------
                                                                                   4,440,450
                                                                               -------------
          ARKANSAS  1.3%
 3,035    Fort Smith, AR Wtr & Swr Rev Ser A Rfdg (FSA
          Insd).........................................   5.250    10/01/16       3,370,732
                                                                               -------------
 
          CALIFORNIA  11.9%
    75    California Rural Home Mtg Fin Auth Single
          Family Mtg Rev Ser C (AMT) (GNMA
          Collateralized)...............................   7.800    02/01/28          77,588
 4,500    California St (AMBAC Insd)....................   5.125    10/01/27       4,691,565
 5,500    California St Dept Wtr Res Pwr Ser A (AMBAC
          Insd).........................................   5.500    05/01/16       6,282,540
 2,000    California St Dept Wtr Res Pwr Ser A..........   5.750    05/01/17       2,271,180
 3,500    California St Pub Wks Brd Lease Rev Dept
          Corrections Ser C.............................   5.250    06/01/28       3,654,070
 2,500    California St Pub Wks Brd Lease Rev Dept
          Corrections Ser E Rfdg (XLCA Insd)............   5.000    06/01/18       2,723,375
 2,000    California St Pub Wks Brd Lease Rev Dept
          Mental Hlth Coalinga A........................   5.000    06/01/25       2,060,600
 5,000    Contra Costa, CA Home Mtg Fin Auth Home Mtg
          Rev (Escrowed to Maturity) (MBIA Insd)........    *       09/01/17       2,735,750
 4,000    Foothill/Eastern Corridor Agy CA Toll Rd Rev
          Conv Cap Apprec Sr Lien Ser A (Escrowed to
          Maturity) (b).................................  0/7.050   01/01/10       4,745,520
 1,500    Los Angeles Cnty, CA Met Tran Auth Sales Tax
          Rev Prop C Second Tier Sr Ser A Rfdg (AMBAC
          Insd).........................................   5.000    07/01/23       1,547,130
                                                                               -------------
                                                                                  30,789,318
                                                                               -------------
          COLORADO  3.7%
 2,000    Arapahoe Cnty, CO Cap Impt Tr Fd Hwy Rev E-470
          Proj (Prerefunded @ 08/31/05).................   7.000    08/31/26       2,145,460
 1,505    Arapahoe Cnty, CO Ctfs Partn Rfdg (FSA Insd)
          (f)...........................................   5.250    12/01/15       1,701,252
 1,000    Colorado Hlth Fac Auth Rev Hosp Portercare
          Adventist Hlth................................   6.500    11/15/31       1,099,240
 1,000    Colorado Hsg Fin Auth Multi-Family Hsg Ins Mtg
          Ser B2 (AMT) (FHA Gtd)........................   5.800    10/01/28       1,032,250

 
 8                                             See Notes to Financial Statements

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2004 continued
 


PAR
AMOUNT
(000)     DESCRIPTION                                     COUPON    MATURITY       VALUE
--------------------------------------------------------------------------------------------
                                                                   
          COLORADO (CONTINUED)
$  171    Colorado Hsg Fin Auth Single Family Pgm Sr Ser
          A2 (AMT)......................................   7.250%   05/01/27   $     174,562
   135    Colorado Hsg Fin Auth Single Family Pgm Sr Ser
          C1 (AMT)......................................   7.550    11/01/27         135,209
 1,000    Denver, CO City & Cnty Arpt Rev Ser B (AMT)
          (MBIA Insd)...................................   6.250    11/15/07       1,091,170
 1,005    Greeley, CO Multi-Family Rev Hsg Mtg Creek
          Stone (AMT) (FHA Gtd).........................   5.950    07/01/28       1,039,572
 1,000    Highlands Ranch Metro Dist No 2 CO Rfdg (FSA
          Insd).........................................   6.500    06/15/11       1,201,710
                                                                               -------------
                                                                                   9,620,425
                                                                               -------------
          CONNECTICUT  2.1%
 3,250    Connecticut St Spl Oblig Pkg Rev Bradley Intl
          Arpt Ser A (AMT) (ACA Insd)...................   6.600    07/01/24       3,522,317
 1,000    Mashantucket Western Pequot Tribe CT Spl Rev
          Ser A, 144A--Private Placement (c)............   6.400    09/01/11       1,069,640
   840    Mashantucket Western Pequot Tribe CT Spl Rev
          Ser A, 144A--Private Placement (Escrowed to
          Maturity) (c).................................   6.500    09/01/06         909,552
                                                                               -------------
                                                                                   5,501,509
                                                                               -------------
          DISTRICT OF COLUMBIA  2.0%
 5,000    Metropolitan Washington DC Arpt Auth Sys Ser A
          (AMT) (FGIC Insd).............................   5.250    10/01/32       5,165,950
                                                                               -------------
 
          FLORIDA  3.0%
 2,000    Escambia Cnty, FL Hlth Fac Auth Rev FL
          Hlthcare Fac Ln VHA Pgm (AMBAC Insd)..........   5.950    07/01/20       2,054,520
 1,000    Lakeland, FL Hosp Sys Rev Lakeland Regl Hlth
          Sys...........................................   5.500    11/15/32       1,043,090
 2,100    Miami-Dade Cnty, FL Aviation Miami Intl Arpt
          (AMT) (FGIC Insd).............................   5.375    10/01/27       2,198,154
 2,375    North Broward, FL Hosp Dist Rev Impt..........   6.000    01/15/31       2,508,998
                                                                               -------------
                                                                                   7,804,762
                                                                               -------------
          GEORGIA  6.9%
 1,937    Fulton Cnty, GA Lease Rev (Acquired
          12/23/1994, Cost $1,936,856) (d)..............   7.250    06/15/10       2,007,416
 7,000    Georgia Muni Elec Auth Pwr Rev Ser A (MBIA
          Insd).........................................   6.500    01/01/20       8,952,440
 6,245    Municipal Elec Auth GA Combustion Turbine Proj
          Ser A (MBIA Insd).............................   5.250    11/01/16       7,012,011
                                                                               -------------
                                                                                  17,971,867
                                                                               -------------

 
See Notes to Financial Statements                                              9

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2004 continued
 


PAR
AMOUNT
(000)     DESCRIPTION                                     COUPON    MATURITY       VALUE
--------------------------------------------------------------------------------------------
                                                                   
          ILLINOIS  7.6%
$5,000    Chicago, IL O'Hare Intl Arpt Rev Gen Arpt
          Second Lien Ser A Rfdg (MBIA Insd) (e)........   6.375%   01/01/12   $   5,135,400
    65    Chicago, IL Single Family Mtg Rev Ser A (AMT)
          (GNMA Collateralized).........................   7.000    09/01/27          65,271
    50    Chicago, IL Single Family Mtg Rev Ser B (AMT)
          (GNMA Collateralized).........................   7.625    09/01/27          50,238
 2,000    Cook Cnty, IL Cmnty Cap Apprec (FSA Insd).....    *       12/01/10       1,626,600
 2,500    Du Page Cnty, IL Trans Rev (FSA Insd).........   5.750    01/01/17       2,846,350
 3,000    Illinois Fin Auth Rev Northwestern Mem Hosp
          Ser A.........................................   5.500    08/15/43       3,120,240
 3,630    Kendall, Kane & Will Cntys, IL Cmnty Sch Dist
          308 Ser B (FGIC Insd) (f).....................   5.250    10/01/20       3,934,085
 1,000    Metropolitan Pier & Expo Auth IL Dedicated St
          Tax Rev McCormick Pl Expn Proj Rfdg (FGIC
          Insd).........................................   5.500    12/15/24       1,107,070
 1,865    Sangamon Cnty, IL Cmnty Unit Sch Dist No 5
          (FGIC Insd) (f)...............................   6.500    12/01/05       1,956,870
                                                                               -------------
                                                                                  19,842,124
                                                                               -------------
          INDIANA  2.1%
 3,270    Allen Cnty, IN War Mem Coliseum Ser A (AMBAC
          Insd) (f).....................................   5.500    11/01/16       3,687,971
 1,000    Indiana St Dev Fin Auth Rev Exempt Fac Conv
          Rfdg (AMT)....................................   5.950    08/01/30       1,024,560
 1,210    North Adams, IN Cmnty Sch Cap Apprec First Mtg
          (FSA Insd) (f)................................    *       01/15/16         747,707
                                                                               -------------
                                                                                   5,460,238
                                                                               -------------
          IOWA  0.8%
 1,890    Des Moines, IA Pub Pkg Sys Rev Ser A (FGIC
          Insd) (f).....................................   5.750    06/01/17       2,141,521
                                                                               -------------
 
          KENTUCKY  2.5%
 1,475    Kenton Cnty, KY Arpt Brd Rev Cincinnati/Northn
          KY Intl Arpt Ser A Rfdg (AMT) (MBIA Insd).....   6.200    03/01/08       1,636,011
 1,995    Kentucky Hsg Corp Hsg Rev Ser F (AMT) (FNMA
          Collateralized)...............................   5.450    01/01/32       2,055,628
 2,345    Kentucky St Tpk Auth Econ Dev Revitalization
          Proj Rfdg (Prerefunded @ 01/01/11) (FSA
          Insd).........................................   5.625    07/01/14       2,687,253
                                                                               -------------
                                                                                   6,378,892
                                                                               -------------
          LOUISIANA  1.8%
 2,500    Lafayette, LA Utils Rev (MBIA Insd)...........   5.250    11/01/23       2,722,250
 2,000    Louisiana Hsg Fin Agy Rev Azalea Estates Ser A
          Rfdg (AMT) (GNMA Collateralized)..............   5.375    10/20/39       2,031,760
                                                                               -------------
                                                                                   4,754,010
                                                                               -------------

 
 10                                            See Notes to Financial Statements

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2004 continued
 


PAR
AMOUNT
(000)     DESCRIPTION                                     COUPON    MATURITY       VALUE
--------------------------------------------------------------------------------------------
                                                                   
          MARYLAND  1.8%
$1,050    Maryland St Econ Dev Corp Univ MD College Pk
          Proj..........................................   5.625%   06/01/35   $   1,084,881
 1,000    Maryland St Hlth & Higher Ed Fac Auth Rev
          Medstar Hlth Rfdg.............................   5.375    08/15/24       1,023,930
 2,350    Northeast, MD Waste Disp Auth Rfdg (AMT)
          (AMBAC Insd)..................................   5.500    04/01/16       2,586,622
                                                                               -------------
                                                                                   4,695,433
                                                                               -------------
          MASSACHUSETTS  2.2%
 3,000    Massachusetts St Dev Fin Agy Semass Sys Ser A
          (MBIA Insd)...................................   5.625    01/01/16       3,356,610
 1,000    Massachusetts St Fed Hwy Gnt Antic Nt Ser A...   5.750    06/15/15       1,133,220
 1,000    Massachusetts St Hlth & Ed Fac Auth Rev Part
          Hlthcare Sys Ser C............................   5.750    07/01/32       1,093,230
                                                                               -------------
                                                                                   5,583,060
                                                                               -------------
          MICHIGAN  2.8%
 3,505    Detroit, MI Wtr Supply Sys Ser B (MBIA Insd)
          (f)...........................................   5.250    07/01/18       3,854,203
 2,000    Michigan St Ctf Part (AMBAC Insd).............   5.500    06/01/27       2,173,460
 1,215    Zeeland, MI Pub Schs Sch Bldg & Site (MBIA
          Insd) (f).....................................   5.250    05/01/19       1,345,758
                                                                               -------------
                                                                                   7,373,421
                                                                               -------------
          MINNESOTA  0.4%
 1,000    Chaska, MN Elec Rev Ser A.....................   6.100    10/01/30       1,074,320
                                                                               -------------
 
          MISSISSIPPI  0.7%
 1,145    Mississippi Home Corp Single Family Rev Mtg
          Ser C (AMT) (GNMA Collateralized).............   7.600    06/01/29       1,204,597
   480    Mississippi Home Corp Single Family Rev Mtg
          Ser F (AMT) (GNMA Collateralized).............   7.550    12/01/27         483,893
                                                                               -------------
                                                                                   1,688,490
                                                                               -------------
          MISSOURI  2.2%
 2,150    Cape Girardeau Cnty, MO Indl Southeast MO Hosp
          Assoc.........................................   5.500    06/01/22       2,208,222
    70    Saint Louis Cnty, MO Single Family Mtg Rev
          (MBIA Insd)...................................   6.900    04/01/16          71,341
 3,000    Sikeston, MO Elec Rev Rfdg (MBIA Insd) (e)....   6.200    06/01/10       3,455,310
                                                                               -------------
                                                                                   5,734,873
                                                                               -------------
          NEVADA  4.7%
 7,500    Clark Cnty, NV Arpt Rev Sub Lien Ser A-2 (FGIC
          Insd).........................................   5.000    07/01/36       7,641,225
 3,000    Clark Cnty, NV Indl Dev Rev Southwest Gas Corp
          Proj Ser A (AMT) (AMBAC Insd).................   5.250    07/01/34       3,096,000
 1,500    Reno, NV Sr Lien Retrac Reno Trans Proj (AMBAC
          Insd).........................................   5.125    06/01/32       1,549,320
                                                                               -------------
                                                                                  12,286,545
                                                                               -------------

 
See Notes to Financial Statements                                             11

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2004 continued
 


PAR
AMOUNT
(000)     DESCRIPTION                                     COUPON    MATURITY       VALUE
--------------------------------------------------------------------------------------------
                                                                   
          NEW HAMPSHIRE  1.1%
$2,500    New Hampshire Hlth & Ed Fac Univ Sys of NH
          (AMBAC Insd)..................................   5.500%   07/01/15   $   2,830,875
                                                                               -------------
 
          NEW JERSEY  18.8%
 2,000    Garden St Preservation Tr NJ Ser A (FSA
          Insd).........................................   5.250    11/01/18       2,228,300
 2,000    New Jersey Econ Dev Auth Cigarette Tax........   5.750    06/15/34       2,055,200
 5,000    New Jersey Econ Dev Auth Mtr Veh Sur Rev Ser A
          (MBIA Insd)...................................   5.000    07/01/22       5,337,550
 5,000    New Jersey Econ Dev Auth Sch Fac Constr Ser F
          (FGIC Insd)...................................   5.250    06/15/20       5,496,050
 3,705    New Jersey Econ Dev Auth Sch Fac Constr Ser I
          (FGIC Insd)...................................   5.000    09/01/20       4,014,701
20,000    New Jersey Econ Dev Auth St Contract Econ
          Recovery (MBIA Insd)..........................   5.900    03/15/21      24,270,600
 5,000    New Jersey St Ed Fac Auth Higher Ed Cap Impt
          Ser A (AMBAC Insd)............................   5.250    09/01/21       5,470,950
                                                                               -------------
                                                                                  48,873,351
                                                                               -------------
          NEW MEXICO  0.5%
 1,180    New Mexico Mtg Fin Auth Single Family Mtg Pgm
          Ser G (AMT) (GNMA Collateralized).............   7.250    07/01/26       1,205,925
                                                                               -------------
 
          NEW YORK  14.9%
 9,600    New York City Ser A...........................   7.000    08/01/07      10,496,832
   400    New York City Ser A (Prerefunded @
          08/01/06).....................................   7.000    08/01/07         441,548
 3,000    New York City Ser A Rfdg......................   7.000    08/01/05       3,111,600
 2,500    New York St Dorm Auth Lease Mun Hlth Facs Impt
          Ser 1 (FSA Insd)..............................   5.500    01/15/12       2,817,800
 1,495    New York St Dorm Auth Rev Mental Hlth Svcs Fac
          Ser A.........................................   5.750    08/15/12       1,625,065
     5    New York St Dorm Auth Rev Mental Hlth Svcs Fac
          Ser A (Prerefunded @ 02/15/07)................   5.750    08/15/12           5,519
 1,445    New York St Dorm Auth Rev Secd Hosp North Gen
          Hosp Rfdg (MBIA Insd).........................   5.750    02/15/17       1,642,112
 2,040    New York St Dorm Auth Rev Secd Hosp North Gen
          Hosp Rfdg.....................................   5.750    02/15/18       2,292,062
 1,500    New York St Dorm Auth Revs Upstate Cmnty
          Colleges Ser B................................   5.250    07/01/20       1,623,420
 1,000    New York St Dorm Auth Revs Upstate Cmnty
          Colleges Ser B................................   5.250    07/01/21       1,075,700
 3,780    New York St Mtg Agy Rev Ser 101 (AMT).........   5.400    04/01/32       3,897,936
 3,500    Port Auth NY & NJ Cons 97th Ser (AMT) (FGIC
          Insd).........................................   6.650    01/15/23       3,568,075

 
 12                                            See Notes to Financial Statements

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2004 continued
 


PAR
AMOUNT
(000)     DESCRIPTION                                     COUPON    MATURITY       VALUE
--------------------------------------------------------------------------------------------
                                                                   
          NEW YORK (CONTINUED)
$4,000    Port Auth NY & NJ Spl Oblig Rev Spl Proj JFK
          Intl Arpt Terminal 6 (AMT) (MBIA Insd)........   5.750%   12/01/22   $   4,359,600
 1,500    Sales Tax Asset Receivable Corp Ser A (MBIA
          Insd) (a).....................................   5.000    10/15/21       1,621,575
                                                                               -------------
                                                                                  38,578,844
                                                                               -------------
          NORTH CAROLINA  6.9%
 1,500    North Carolina Eastn Muni Pwr Agy Pwr Sys Rev
          Ser D.........................................   6.700    01/01/19       1,694,475
11,000    North Carolina Muni Pwr Agy No 1 Catawba Elec
          Rev Rfdg (MBIA Insd)..........................   6.000    01/01/12      12,916,970
 3,000    North Carolina Muni Pwr Agy Ser A (MBIA
          Insd).........................................   5.250    01/01/19       3,275,430
                                                                               -------------
                                                                                  17,886,875
                                                                               -------------
          NORTH DAKOTA  0.2%
   595    North Dakota St Hsg Fin Agy Ser C (AMT).......   5.550    07/01/29         601,575
                                                                               -------------
 
          OHIO  3.3%
   700    Akron, OH Ctf Part Akron Muni Baseball Stad
          Proj..........................................   6.500    12/01/07         741,489
 1,190    Bowling Green St Univ OH (FGIC Insd)..........   5.750    06/01/14       1,361,324
   500    Cuyahoga Cnty, OH Hosp Fac Rev Canton Inc
          Proj..........................................   7.500    01/01/30         554,230
 3,000    Lucas Cnty, OH Hosp Rev Promedica Hlthcare
          Oblig Rfdg (MBIA Insd)........................   6.000    11/15/07       3,275,760
 1,500    Mahoning Cnty, OH Hosp Fac Forum Hlth Oblig
          Group Ser A...................................   6.000    11/15/32       1,588,545
 1,000    Ohio St Air Quality Dev Auth Rev JMG Fdg Ltd
          Part Proj Rfdg (AMT) (AMBAC Insd).............   6.375    04/01/29       1,023,300
                                                                               -------------
                                                                                   8,544,648
                                                                               -------------
          OKLAHOMA  4.0%
   470    Central OK Transn & Pkg Auth Pkg Sys (AMBAC
          Insd).........................................   5.000    07/01/19         504,663
   525    Central OK Transn & Pkg Auth Pkg Sys (AMBAC
          Insd).........................................   5.000    07/01/20         560,942
 4,770    McAlester, OK Pub Wks Auth Util Cap Apprec
          (FSA Insd)....................................    *       02/01/34       1,048,541
 1,300    Sapulpa, OK Muni Auth Cap Impt Rev Rfdg
          (Prerefunded @ 07/01/10) (FSA Insd)...........   5.750    07/01/30       1,506,804
 1,000    Tulsa Cnty, OK Pub Fac Auth Cap Impt Rev
          (AMBAC Insd)..................................   6.250    11/01/22       1,168,420

 
See Notes to Financial Statements                                             13

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2004 continued
 


PAR
AMOUNT
(000)     DESCRIPTION                                     COUPON    MATURITY       VALUE
--------------------------------------------------------------------------------------------
                                                                   
          OKLAHOMA (CONTINUED)
$2,000    Tulsa, OK Indl Auth Hosp Rev Hillcrest Med
          Cent Proj Rfdg (Escrowed to Maturity) (Connie
          Lee Insd).....................................   6.125%   06/01/05   $   2,050,580
 3,140    Tulsa, OK Indl Auth Hosp Rev Hillcrest Med
          Cent Proj Rfdg (Escrowed to Maturity) (Connie
          Lee Insd) (f).................................   6.250    06/01/08       3,554,982
                                                                               -------------
                                                                                  10,394,932
                                                                               -------------
          OREGON  3.2%
 2,500    Oregon Hlth Sciences Univ Insd Ser A (MBIA
          Insd).........................................   5.250    07/01/22       2,702,300
 5,000    Oregon St Dept Admin Ser C Rfdg (MBIA Insd)...   5.250    11/01/18       5,547,400
                                                                               -------------
                                                                                   8,249,700
                                                                               -------------
          PENNSYLVANIA  7.2%
 2,000    Harrisburg, PA Auth Res Gtd Sub Ser D-2 (FSA
          Insd).........................................   5.000    12/01/33       2,194,220
 1,000    Harrisburg, PA Cap Apprec Nts Ser F Rfdg
          (AMBAC Insd)..................................    *       03/15/15         649,630
 1,865    Harrisburg, PA Cap Apprec Ser D Rfdg (AMBAC
          Insd) (f).....................................    *       09/15/15       1,186,644
 1,865    Harrisburg, PA Cap Apprec Ser D Rfdg (AMBAC
          Insd).........................................    *       03/15/16       1,149,362
 4,000    Hempfield, PA Area Sch Dist Ser A Westmoreland
          Cnty (FGIC Insd)..............................   5.250    03/15/20       4,423,440
 3,000    Susquehanna Area Regl Arpt Auth PA Ser A (AMT)
          (AMBAC Insd)..................................   5.375    01/01/21       3,205,980
 5,415    Susquehanna Area Regl Arpt Auth PA Ser A (AMT)
          (AMBAC Insd) (f)..............................   5.375    01/01/22       5,760,044
                                                                               -------------
                                                                                  18,569,320
                                                                               -------------
          SOUTH CAROLINA  1.6%
 1,250    Easley, SC Util Rev Comb (FSA Insd) (f).......   5.250    12/01/18       1,393,125
 2,500    South Carolina Jobs Econ Dev Auth Indl Rev
          Elec & Gas Co Proj Ser A (AMBAC Insd).........   5.200    11/01/27       2,631,125
                                                                               -------------
                                                                                   4,024,250
                                                                               -------------
          SOUTH DAKOTA  0.6%
 1,375    Deadwood, SD Ctfs Partn (ACA Insd)............   6.375    11/01/20       1,484,285
                                                                               -------------
 
          TENNESSEE  0.9%
 1,000    Elizabethton, TN Hlth & Ed Fac Brd Rev Hosp
          First Mtg Ser B Impt & Rfdg...................   8.000    07/01/33       1,189,420
 1,000    Johnson City, TN Hlth & Ed Fac Brd Hosp Rev
          First Mtg Mtn St Hlth Ser A Rfdg (MBIA
          Insd).........................................   7.500    07/01/25       1,261,640
                                                                               -------------
                                                                                   2,451,060
                                                                               -------------

 
 14                                            See Notes to Financial Statements

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2004 continued
 


PAR
AMOUNT
(000)     DESCRIPTION                                     COUPON    MATURITY       VALUE
--------------------------------------------------------------------------------------------
                                                                   
          TEXAS  18.8%
$  980    Austin, TX Utility Sys Rev Comb (AMBAC
          Insd).........................................   6.500%   11/15/05   $   1,026,805
    20    Austin, TX Utility Sys Rev Comb Rfdg (Escrowed
          to Maturity) (AMBAC Insd).....................   6.500    11/15/05          20,966
 2,545    Dallas Cnty, TX Cmnty College Fin Sys (AMBAC
          Insd) (f).....................................   5.375    02/15/17       2,796,242
 3,000    Dallas Cnty, TX Util & Reclamation Dist Ser B
          Rfdg (AMBAC Insd).............................   5.875    02/15/29       3,032,340
 2,500    Dallas, TX Wtrwks & Swr Sys Rev & Impt Rfdg
          (FSA Insd)....................................   5.375    10/01/18       2,772,900
 5,500    Dallas-Fort Worth, TX Intl Arpt Rev Impt Jt
          Ser A Rfdg (AMT) (FGIC Insd)..................   5.500    11/01/31       5,755,035
 4,000    Dallas-Fort Worth, TX Intl Arpt Rev Jt Ser A
          (AMT) (FSA Insd)..............................   5.500    11/01/21       4,341,280
 1,500    Dallas-Fort Worth, TX Intl Arpt Rev Jt Ser A
          (AMT) (FGIC Insd).............................   5.750    11/01/30       1,600,845
 2,000    Houston, TX Arpt Sys Rev Sub Lien (FSA
          Insd).........................................   5.500    07/01/20       2,240,280
 3,000    Houston, TX Arpt Sys Rev Sub Lien Ser A (AMT)
          (FSA Insd)....................................   5.625    07/01/30       3,187,620
 5,000    Houston, TX Arpt Sys Rev Sub Lien Ser A (AMT)
          (FSA Insd)....................................   5.125    07/01/32       5,089,750
 6,000    Houston, TX Util Sys Rev First Lien Ser A Rfdg
          (FSA Insd)....................................   5.250    05/15/21       6,562,680
 1,500    Metropolitan Hlth Fac Dev Corp TX Wilson N
          Jones Mem Hosp Proj...........................   7.250    01/01/31       1,450,065
 5,000    North Cent TX Hlth Fac Dev Hosp Childrens Med
          Ctr Dallas (AMBAC Insd).......................   5.250    08/15/32       5,221,500
 1,122    Texas Gen Svcs Comm Partn Int Lease Purch Ctfs
          (Acquired 03/16/1995, Cost $1,122,054) (d)....   7.250    08/01/11       1,140,703
 2,360    University TX Rev Fin Sys Ser B...............   5.250    08/15/20       2,581,344
                                                                               -------------
                                                                                  48,820,355
                                                                               -------------
          WASHINGTON  7.2%
 9,850    Bellevue, WA Convention Cent Comp Int Rfdg
          (MBIA Insd)...................................    *       02/01/25       3,551,615
 3,750    Chelan Cnty, WA Pub Util Dist No. 001 Cons Rev
          Chelan Hydro Ser A (AMT) (MBIA Insd)..........   5.600    01/01/36       3,977,925
 5,000    Energy Northwest WA Elec Rev Columbia
          Generating Ser A Rfdg (FSA Insd)..............   5.500    07/01/16       5,620,350
 2,000    Port Seattle, WA Rev Ser B (AMT) (MBIA
          Insd).........................................   5.625    02/01/24       2,171,480
 5,125    Washington St Pub Pwr Supply Sys Nuclear Proj
          No 3 Rev Ser C Rfdg (MBIA Insd)...............    *       07/01/14       3,443,385
                                                                               -------------
                                                                                  18,764,755
                                                                               -------------
          WEST VIRGINIA  3.1%
 8,000    Harrison Cnty, WV Cmnty Solid Waste Disp Rev
          West Penn Pwr Co Proj Ser A (AMT) (MBIA
          Insd).........................................   6.875    04/15/22       8,031,280
                                                                               -------------

 
See Notes to Financial Statements                                             15

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
PORTFOLIO OF INVESTMENTS -- OCTOBER 31, 2004 continued
 


PAR
AMOUNT
(000)     DESCRIPTION                                     COUPON    MATURITY       VALUE
--------------------------------------------------------------------------------------------
                                                                   
          WISCONSIN  0.7%
$1,500    Southeast WI Professional Baseball Pk Dist
          Sales Tax Rev Ser A Rfdg (MBIA Insd)..........   5.500%   12/15/20   $   1,764,465
                                                                               -------------
 
TOTAL LONG-TERM INVESTMENTS  156.2%
  (Cost $373,287,748).......................................................     405,298,329
SHORT-TERM INVESTMENT  0.2%
  (Cost $500,000)...........................................................         500,000
                                                                               -------------
 
TOTAL INVESTMENTS  156.4%
  (Cost $373,787,748).......................................................     405,798,329
OTHER ASSETS IN EXCESS OF LIABILITIES  1.5%.................................       3,718,053
PREFERRED SHARES (INCLUDING ACCRUED DISTRIBUTIONS)  (57.9%).................    (150,094,106)
                                                                               -------------
 
NET ASSETS APPLICABLE TO COMMON SHARES  100.0%..............................   $ 259,422,276
                                                                               =============

 
Percentages are calculated as a percentage of net assets applicable to common
shares.
 
*   Zero coupon bond
 
(a) Securities purchased on a when-issued or delayed delivery basis.
 
(b) Security is a "step-up" bond where the coupon increases or steps up at a
    predetermined date.
 
(c) 144A securities are those which are exempt from registration under Rule 144A
    of the Securities Act of 1933, as amended. These securities may only be
    resold in transactions exempt from registration which are normally those
    transactions with qualified institutional buyers.
 
(d) These securities are restricted and may be resold only in transactions
    exempt from registration which are normally those transactions with
    qualified institutional buyers. Restricted securities comprise 1.2% of net
    assets applicable to common shares.
 
(e) All or a portion of these securities have been physically segregated in
    connection with open futures contracts.
 
(f) The Trust owns 100% of the bond issuance.
 
ACA--American Capital Access
 
AMBAC--AMBAC Indemnity Corp.
 
AMT--Alternative Minimum Tax
 
Connie Lee--Connie Lee Insurance Co.
 
FGIC--Financial Guaranty Insurance Co.
 
FHA--Federal Housing Administration
 
FNMA--Federal National Mortgage Association
 
FSA--Financial Security Assurance Inc.
 
GNMA--Government National Mortgage Association
 
MBIA--Municipal Bond Investors Assurance Corp.
 
XLCA--XL Capital Assurance Inc.
 
 16                                            See Notes to Financial Statements

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
FINANCIAL STATEMENTS

Statement of Assets and Liabilities
October 31, 2004
 

                                                           
ASSETS:
Total Investments (Cost $373,787,748).......................  $405,798,329
Cash........................................................        35,628
Receivables:
  Interest..................................................     5,937,527
  Investments Sold..........................................       172,746
Other.......................................................         7,177
                                                              ------------
    Total Assets............................................   411,951,407
                                                              ------------
LIABILITIES:
Payables:
  Investments Purchased.....................................     1,618,230
  Investment Advisory Fee...................................       207,472
  Variation Margin on Futures...............................       148,344
  Income Distributions--Common Shares.......................        60,638
  Other Affiliates..........................................        15,267
Trustees' Deferred Compensation and Retirement Plans........       271,468
Accrued Expenses............................................       113,606
                                                              ------------
    Total Liabilities.......................................     2,435,025
Preferred Shares (including accrued distributions)..........   150,094,106
                                                              ------------
NET ASSETS APPLICABLE TO COMMON SHARES......................  $259,422,276
                                                              ============
NET ASSET VALUE PER COMMON SHARE ($259,422,276 divided by
  15,357,684 shares outstanding)............................  $      16.89
                                                              ============
NET ASSETS CONSIST OF:
Common Shares ($.01 par value with an unlimited number of
  shares authorized, 15,357,684 shares issued and
  outstanding)..............................................  $    153,577
Paid in Surplus.............................................   226,763,756
Net Unrealized Appreciation.................................    31,576,864
Accumulated Undistributed Net Investment Income.............     1,189,973
Accumulated Net Realized Loss...............................      (261,894)
                                                              ------------
NET ASSETS APPLICABLE TO COMMON SHARES......................  $259,422,276
                                                              ============
PREFERRED SHARES ($.01 par value, authorized 100,000,000
  shares, 6,000 issued with liquidation preference of
  $25,000 per share)........................................  $150,000,000
                                                              ============
NET ASSETS INCLUDING PREFERRED SHARES.......................  $409,422,276
                                                              ============

 
See Notes to Financial Statements                                             17

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
FINANCIAL STATEMENTS continued
 
Statement of Operations
For the Year Ended October 31, 2004
 

                                                           
INVESTMENT INCOME:
Interest....................................................  $20,697,831
                                                              -----------
EXPENSES:
Investment Advisory Fee.....................................    2,443,896
Preferred Share Maintenance.................................      399,746
Administrative Fee..........................................      119,262
Trustees' Fees and Related Expenses.........................       96,166
Legal.......................................................       43,215
Custody.....................................................       24,806
Other.......................................................      219,200
                                                              -----------
    Total Expenses..........................................    3,346,291
                                                              -----------
NET INVESTMENT INCOME.......................................  $17,351,540
                                                              ===========
REALIZED AND UNREALIZED GAIN/LOSS:
Realized Gain/Loss:
  Investments...............................................  $ 2,712,342
  Futures...................................................   (4,808,812)
                                                              -----------
Net Realized Loss...........................................   (2,096,470)
                                                              -----------
Unrealized Appreciation/Depreciation:
  Beginning of the Period...................................   25,976,471
                                                              -----------
  End of the Period:
    Investments.............................................   32,010,581
    Futures.................................................     (433,717)
                                                              -----------
                                                               31,576,864
                                                              -----------
Net Unrealized Appreciation During the Period...............    5,600,393
                                                              -----------
NET REALIZED AND UNREALIZED GAIN............................  $ 3,503,923
                                                              ===========
DISTRIBUTIONS TO PREFERRED SHAREHOLDERS.....................  $(1,849,091)
                                                              ===========
NET INCREASE IN NET ASSETS APPLICABLE TO COMMON SHARES FROM
  OPERATIONS................................................  $19,006,372
                                                              ===========

 
 18                                            See Notes to Financial Statements

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
FINANCIAL STATEMENTS continued
 
Statements of Changes in Net Assets
 


                                                                FOR THE            FOR THE
                                                               YEAR ENDED         YEAR ENDED
                                                            OCTOBER 31, 2004   OCTOBER 31, 2003
                                                            -----------------------------------
                                                                         
FROM INVESTMENT ACTIVITIES:
Operations:
Net Investment Income.....................................    $ 17,351,540       $ 18,197,414
Net Realized Gain/Loss....................................      (2,096,470)         6,086,249
Net Unrealized Appreciation/Depreciation During the
  Period..................................................       5,600,393         (4,641,387)
Distributions to Preferred Shareholders:
  Net Investment Income...................................      (1,527,703)        (1,239,349)
  Net Realized Gain.......................................        (321,388)          (537,720)
                                                              ------------       ------------
Change in Net Assets Applicable to Common Shares from
  Operations..............................................      19,006,372         17,865,207
 
Distributions to Common Shareholders:
  Net Investment Income...................................     (16,600,321)       (17,777,125)
  Net Realized Gain.......................................      (4,376,481)        (7,109,923)
                                                              ------------       ------------
 
NET CHANGE IN NET ASSETS APPLICABLE TO COMMON SHARES FROM
  INVESTMENT ACTIVITIES...................................      (1,970,430)        (7,021,841)
 
FROM CAPITAL TRANSACTIONS:
Value of Common Shares Issued Through Dividend
  Reinvestment............................................          81,435                -0-
                                                              ------------       ------------
TOTAL DECREASE IN NET ASSETS APPLICABLE TO COMMON
  SHARES..................................................      (1,888,995)        (7,021,841)
NET ASSETS APPLICABLE TO COMMON SHARES:
Beginning of the Period...................................     261,311,271        268,333,112
                                                              ------------       ------------
End of the Period (Including accumulated undistributed net
  investment income of $1,189,973 and $2,379,855,
  respectively)...........................................    $259,422,276       $261,311,271
                                                              ============       ============

 
See Notes to Financial Statements                                             19

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
FINANCIAL HIGHLIGHTS
 
THE FOLLOWING SCHEDULE PRESENTS FINANCIAL HIGHLIGHTS FOR ONE COMMON SHARE OF THE
TRUST OUTSTANDING THROUGHOUT THE PERIODS INDICATED.
 


                                                              ------------------------------
                                                               2004       2003      2002 (A)
                                                              ------------------------------
                                                                           
NET ASSET VALUE, BEGINNING OF THE PERIOD..................    $ 17.02    $ 17.48    $ 17.59
                                                              -------    -------    -------
  Net Investment Income...................................       1.13       1.19       1.23
  Net Realized and Unrealized Gain/Loss...................        .23        .09        .15
  Common Share Equivalent of Distributions Paid to
  Preferred Shareholders:
    Net Investment Income.................................       (.10)      (.08)      (.09)
    Net Realized Gain.....................................       (.02)      (.04)      (.08)
                                                              -------    -------    -------
Total from Investment Operations..........................       1.24       1.16       1.21
Distributions Paid to Common Shareholders:
    Net Investment Income.................................      (1.08)     (1.16)     (1.08)
    Net Realized Gain.....................................       (.29)      (.46)      (.24)
                                                              -------    -------    -------
NET ASSET VALUE, END OF THE PERIOD........................    $ 16.89    $ 17.02    $ 17.48
                                                              =======    =======    =======
 
Common Share Market Price at End of the Period............    $ 15.20    $ 16.65    $ 16.04
Total Return (b)..........................................     -0.60%     14.53%     11.36%
Net Assets Applicable to Common Shares at End of the
  Period (In millions)....................................    $ 259.4    $ 261.3    $ 268.3
Ratio of Expenses to Average Net Assets Applicable to
  Common Shares (c).......................................      1.30%      1.28%      1.42%
Ratio of Net Investment Income to Average Net Assets
  Applicable to Common Shares (c).........................      6.74%      6.90%      7.17%
Portfolio Turnover........................................        28%        36%        43%
 
SUPPLEMENTAL RATIOS:
Ratio of Expenses to Average Net Assets Including
  Preferred Shares (c)....................................       .82%       .81%       .91%
Ratio of Net Investment Income to Average Net Assets
  Applicable to Common Shares (d).........................      6.15%      6.43%      6.61%
 
SENIOR SECURITIES:
Total Preferred Shares Outstanding........................      6,000      6,000      6,000
Asset Coverage Per Preferred Share (e)....................    $68,253    $68,560    $69,736
Involuntary Liquidating Preference Per Preferred Share....    $25,000    $25,000    $25,000
Average Market Value Per Preferred Share..................    $25,000    $25,000    $25,000

 
(a)As required, effective November 1, 2001, the Trust has adopted the provisions
   of the AICPA Audit and Accounting Guide for Investment Companies and began
   accreting market discount on fixed income securities. The effect of this
   change for the year ended October 31, 2002 was to increase net investment
   income by $.01, decrease net realized and unrealized gains and losses per
   share by $.01 and increase the ratio of net investment income to average net
   assets applicable to common shares by .03%. Per share, ratios and
   supplemental data for periods prior to October 31, 2002 have not been
   restated to reflect this change in presentation.
 
(b)Total return assumes an investment at the common share market price at the
   beginning of the period indicated, reinvestment of all distributions for the
   period in accordance with the Trust's dividend reinvestment plan, and sale of
   all shares at the closing common share market price at the end of the period
   indicated.
 
(c)Ratios do not reflect the effect of dividend payments to preferred
   shareholders.
 
(d)Ratios reflect the effect of dividend payments to preferred shareholders.
 
(e)Calculated by subtracting the Trust's total liabilities (not including the
   preferred shares) from the Trust's total assets and dividing this by the
   number of preferred shares outstanding.
 
 20

 


YEAR ENDED OCTOBER 31,
-----------------------------------------------------------------------------
      2001       2000      1999       1998       1997       1996       1995
-----------------------------------------------------------------------------
                                                
     $ 16.29   $  15.67   $ 17.61   $  16.96   $  16.12   $  15.85   $  14.39
     -------   --------   -------   --------   --------   --------   --------
        1.26       1.27      1.25       1.26       1.26       1.27       1.28
        1.29        .65     (1.97)       .64        .83        .27       1.58
        (.32)      (.40)     (.32)      (.35)      (.35)      (.36)      (.39)
        (.01)       -0-       -0-        -0-        -0-        -0-        -0-
     -------   --------   -------   --------   --------   --------   --------
        2.22       1.52     (1.04)      1.55       1.74       1.18       2.47
        (.92)      (.90)     (.90)      (.90)      (.90)      (.91)     (1.01)
         -0-        -0-       -0-        -0-        -0-        -0-        -0-
     -------   --------   -------   --------   --------   --------   --------
     $ 17.59   $  16.29   $ 15.67   $  17.61   $  16.96   $  16.12   $  15.85
     =======   ========   =======   ========   ========   ========   ========
 
     $ 15.65   $13.6875   $ 13.50   $  16.50   $15.0625   $  13.75   $ 13.625
      21.42%      8.28%   -13.29%     15.91%     16.54%      7.72%     12.70%
     $ 270.0   $  250.1   $ 240.5   $  270.3   $  260.3   $  247.5   $  243.3
       1.58%      1.68%     1.62%      1.61%      1.64%      1.66%      1.75%
       7.40%      8.04%     7.35%      7.25%      7.64%      7.96%      8.45%
         34%        29%       30%        29%        49%        85%        70%
 
       1.00%      1.03%     1.03%      1.03%      1.03%      1.03%      1.06%
       5.54%      5.49%     5.48%      5.24%      5.51%      5.73%      5.87%
 
       6,000      6,000     6,000      3,000      3,000      3,000      3,000
     $70,006   $ 66,683   $65,086   $140,098   $136,771   $132,502   $131,094
     $25,000   $ 25,000   $25,000   $ 50,000   $ 50,000   $ 50,000   $ 50,000
     $25,000   $ 25,000   $25,000   $ 50,000   $ 50,000   $ 50,000   $ 50,000

 
See Notes to Financial Statements                                             21

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
NOTES TO FINANCIAL STATEMENTS -- OCTOBER 31, 2004
 
1. SIGNIFICANT ACCOUNTING POLICIES
 
Van Kampen Municipal Opportunity Trust (the "Trust") is registered as a
diversified, closed-end management investment company under the Investment
Company Act of 1940, as amended. The Trust's investment objective is to provide
a high level of current income exempt from federal income tax, consistent with
preservation of capital. The Trust commenced investment operations on April 24,
1992. Effective November 30, 2003, the Trust's investment adviser, Van Kampen
Investment Advisory Corp. merged into its affiliate, Van Kampen Asset
Management.
 
    The following is a summary of significant accounting policies consistently
followed by the Trust in the preparation of its financial statements. The
preparation of financial statements in conformity with accounting principles
generally accepted in the United States of America requires management to make
estimates and assumptions that affect the reported amounts of assets and
liabilities and disclosure of contingent assets and liabilities at the date of
the financial statements and the reported amounts of revenues and expenses
during the reporting period. Actual results could differ from those estimates.
 
A. SECURITY VALUATION Municipal bonds are valued by independent pricing services
or dealers using the mean of the bid and asked prices or, in the absence of
market quotations, at fair value based upon yield data relating to municipal
bonds with similar characteristics and general market conditions. Securities
which are not valued by independent pricing services or dealers are valued at
fair value using procedures established in good faith by the Board of Trustees.
Futures contracts are valued at the settlement price established each day on the
exchange on which they are traded. Short-term securities with remaining
maturities of 60 days or less are valued at amortized cost, which approximates
market value.
 
B. SECURITY TRANSACTIONS Security transactions are recorded on a trade date
basis. Realized gains and losses are determined on an identified cost basis. The
Trust may purchase and sell securities on a "when-issued" or "delayed delivery"
basis, with settlement to occur at a later date. The value of the security so
purchased is subject to market fluctuations during this period. The Trust will
segregate assets with the custodian having an aggregate value at least equal to
the amount of the when-issued or delayed delivery purchase commitments until
payment is made. At October 31, 2004, the Trust had $1,618,230 of when-issued or
delayed delivery purchase commitments.
 
C. INVESTMENT INCOME Interest income is recorded on an accrual basis. Bond
premium is amortized and discount is accreted over the expected life of each
applicable security.
 
D. FEDERAL INCOME TAXES It is the Trust's policy to comply with the requirements
of the Internal Revenue Code applicable to regulated investment companies and to
distribute substantially all of its taxable income to its shareholders.
Therefore, no provision for federal income taxes is required.
 
    The Trust intends to utilize provisions of the federal income tax laws which
allow it to carry a realized loss forward for eight years following the year of
the loss and offset such losses against any future realized capital gains. At
October 31, 2004, the Trust had an accumulated capital loss carryforward for tax
purposes of $694,750, which will expire on October 31, 2012.
 
 22

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
NOTES TO FINANCIAL STATEMENTS -- OCTOBER 31, 2004 continued
 
    At October 31, 2004, the cost and related gross unrealized appreciation and
depreciation are as follows:
 

                                                           
Cost of investments for tax purposes........................  $373,634,612
                                                              ============
Gross tax unrealized appreciation...........................    32,631,554
Gross tax unrealized depreciation...........................      (467,837)
                                                              ------------
Net tax unrealized appreciation on investments..............  $ 32,163,717
                                                              ============

 
E. DISTRIBUTION OF INCOME AND GAINS The Trust declares and pays monthly
dividends from net investment income to common shareholders. Net realized gains,
if any, are distributed annually on a pro rata basis to common and preferred
shareholders. Distributions from net realized gains for book purposes may
include short-term capital gains, which are included as ordinary income for tax
purposes.
 
    The tax character of distributions paid during the years ended October 31,
2004 and 2003 was as follows:
 


                                                                 2004          2003
                                                                      
Distributions paid from:
  Ordinary income...........................................  $1,281,469    $1,944,011
  Long-term capital gain....................................   3,842,711     5,824,969
                                                              ----------    ----------
                                                              $5,124,180    $7,768,980
                                                              ==========    ==========

 
    Due to inherent differences in the recognition of income, expenses, and
realized gains/losses under accounting principles generally accepted in the
United States of America and federal income tax purposes, permanent differences
between financial and tax basis reporting for the 2004 fiscal year have been
identified and appropriately reclassified. A permanent difference relating to
excise taxes paid which are not deductible for tax purposes totaling $9,836 was
reclassified from accumulated undistributed net investment income to paid in
surplus. Also, a permanent difference of $423,234 relating to book to tax
accretion differences was reclassified from accumulated undistributed net
investment income to accumulated net realized loss.
 
    Net realized gains and losses may differ for financial and tax purposes as a
result of gains or losses recognized for tax purposes on open future
transactions on October 31, 2004 and the deferral of losses related to wash sale
transactions.
 
2. INVESTMENT ADVISORY AGREEMENT AND OTHER TRANSACTIONS WITH AFFILIATES
 
Under the terms of the Trust's Investment Advisory Agreement, Van Kampen Asset
Management (the "Adviser") will provide investment advice and facilities to the
Trust for an annual fee payable monthly of .60% of the average daily net assets
of the Trust. Effective November 1, 2004, the investment advisory fee was
reduced from .60% to .55%. In addition, the Trust paid a monthly administrative
fee to Van Kampen Investments Inc. or its affiliates (collectively "Van
Kampen"), the Trust's Administrator, at an annual rate of .05% of the average
daily net assets of the Trust. Effective June 1, 2004, the administrative fee
was reduced from .05% to .00%.
 
                                                                              23

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
NOTES TO FINANCIAL STATEMENTS -- OCTOBER 31, 2004 continued
 
    For the year ended October 31, 2004, the Trust recognized expenses of
approximately $26,300 representing legal services provided by Skadden, Arps,
Slate, Meagher & Flom LLP, counsel to the Trust, of which a trustee of the Trust
is a partner who provides legal services to the Trust, and is therefore an
affiliated person.
 
    Under separate Accounting Services and Legal Services agreements, the
Adviser provides accounting and legal services to the Trust. The Adviser
allocates the cost of such services to each trust. For the year ended October
31, 2004, the Trust recognized expenses of approximately $40,800 representing
Van Kampen's cost of providing accounting and legal services to the Trust, which
are reported as part of "Other" and "Legal" expenses, respectively, in the
Statement of Operations.
 
    Certain officers and trustees of the Trust are also officers and directors
of Van Kampen. The Trust does not compensate its officers or trustees who are
also officers of Van Kampen.
 
    The Trust provides deferred compensation and retirement plans for its
trustees who are not officers of Van Kampen. Under the deferred compensation
plan, trustees may elect to defer all or a portion of their compensation to a
later date. Benefits under the retirement plan are payable upon retirement for a
ten-year period and are based upon each trustee's years of service to the Trust.
The maximum annual benefit per trustee under the plan is $2,500.
 
3. CAPITAL TRANSACTIONS
 
At October 31, 2004 and 2003, paid in surplus related to common shares
aggregated $226,763,756 and $226,692,205, respectively.
 
    Transactions in common shares were as follows:
 


                                                             YEAR ENDED          YEAR ENDED
                                                          OCTOBER 31, 2004    OCTOBER 31, 2003
                                                          ----------------    ----------------
                                                                        
Beginning Shares........................................     15,352,891          15,352,891
Shares Issued Through Dividend Reinvestment.............          4,793                 -0-
                                                             ----------          ----------
Ending Shares...........................................     15,357,684          15,352,891
                                                             ==========          ==========

 
4. INVESTMENT TRANSACTIONS
 
During the period, the cost of purchases and proceeds from sales of investments,
excluding short-term investments, were $112,949,512 and $122,149,605,
respectively.
 
5. DERIVATIVE FINANCIAL INSTRUMENTS
 
A derivative financial instrument in very general terms refers to a security
whose value is "derived" from the value of an underlying asset, reference rate
or index.
 
    In order to seek to manage the interest rate exposure of the Trust's
portfolio in a changing interest rate environment, the Trust may purchase or
sell financial futures contracts or engage in transactions involving interest
rate swaps, caps, floors or collars. The Trust expects to enter into these
transactions primarily as a hedge against anticipated interest rate or
fixed-income market changes, for duration management or for risk management
purposes, but may also enter into these transactions to generate additional
income. All of the Trust's portfolio holdings, including derivative instruments,
are marked to market each day with the change in value reflected in unrealized
appreciation/depreciation. Upon disposition, a realized gain or loss is
recognized accordingly, except when taking delivery of a security underlying a
 
 24

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
NOTES TO FINANCIAL STATEMENTS -- OCTOBER 31, 2004 continued
 
futures contract. In this instance, the recognition of gain or loss is postponed
until the disposal of the security underlying the futures contract. Risks may
arise as a result of the potential inability of the counterparties to meet the
terms of their contracts or agreements.
 
    During the period, the Trust invested in futures contracts, a type of
derivative. A futures contract is an agreement involving the delivery of a
particular asset on a specified future date at an agreed upon price. The Trust
generally invests in futures on U.S. Treasury Notes and typically closes the
contract prior to the delivery date. These contracts are generally used to
manage the portfolio's effective maturity and duration.
 
    Upon entering into futures contracts, the Trust maintains, in a segregated
account with its custodian, an amount of cash or liquid securities with a value
equal to a percentage of the contract amount with either a futures commission
merchant pursuant to rules and regulations promulgated under the 1940 Act, or
with its custodian in an account in the broker's name. This amount is known as
initial margin. During the period the futures contract is open, payments are
received from or made to the broker based upon changes in the value of the
contract (the variation margin). The risk of loss associated with a futures
contract is in excess of the variation margin reflected on the Statement of
Assets and Liabilities.
 
    Transactions in futures contracts, each with a par value of $100,000, for
the year ended October 31, 2004, were as follows:
 


                                                              CONTRACTS
                                                           
Outstanding at October 31, 2003.............................      584
Futures Opened..............................................    2,531
Futures Closed..............................................   (2,514)
                                                               ------
Outstanding at October 31, 2004.............................      601
                                                               ======

 
    The futures contracts outstanding as of October 31, 2004, and the
description and unrealized appreciation/depreciation were as follows:
 


                                                                            UNREALIZED
                                                                           APPRECIATION/
                                                              CONTRACTS    DEPRECIATION
                                                                     
SHORT CONTRACTS:
U.S. Treasury Notes 5-Year Futures December 2004 (Current
  Notional Value of $111,375 per contract)..................     493         $(310,097)
U.S. Treasury Notes 10-Year Futures December 2004 (Current
  Notional Value of $113,562 per contract)..................     108          (123,620)
                                                                 ---         ---------
                                                                 601         $(433,717)
                                                                 ===         =========

 
6. PREFERRED SHARES
 
The Trust has outstanding 6,000 Auction Preferred Shares ("APS") in two series
of 3,000 shares each. Dividends are cumulative and the dividend rate on each
series is currently reset every 28 days through an auction process. The average
rate in effect on October 31, 2004 was 1.575%. During the year ended October 31,
2004, the rates ranged from .880% to 1.850%.
 
    The Trust pays annual fees equivalent to .25% of the preferred share
liquidation value for the remarketing efforts associated with the preferred
auctions. These fees are included as a component of "Preferred Share
Maintenance" expense in the Statement of Operations.
 
                                                                              25

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
NOTES TO FINANCIAL STATEMENTS -- OCTOBER 31, 2004 continued
 
    The APS are redeemable at the option of the Trust in whole or in part at the
liquidation value of $25,000 per share plus accumulated and unpaid dividends.
The Trust is subject to certain asset coverage tests and the APS are subject to
mandatory redemption if the tests are not met.
 
7. INDEMNIFICATIONS
 
The Trust enters into contracts that contain a variety of indemnifications. The
Trust's maximum exposure under these arrangements is unknown. However, the Trust
has not had prior claims or losses pursuant to these contracts and expects the
risk of loss to be remote.
 
 26

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
 
To the Board of Trustees and Shareholders of Van Kampen Municipal Opportunity
Trust:
 
We have audited the accompanying statement of assets and liabilities of Van
Kampen Municipal Opportunity Trust (the "Trust"), including the portfolio of
investments, as of October 31, 2004, the related statement of operations for the
year then ended, the statements of changes in net assets for each of the two
years in the period then ended, and the financial highlights for each of the
five years in the period then ended. These financial statements and financial
highlights are the responsibility of the Trust's management. Our responsibility
is to express an opinion on these financial statements and financial highlights
based on our audits. The Trust's financial highlights for the periods ended
prior to October 31, 2000 were audited by other auditors whose report, dated
December 6, 1999, expressed an unqualified opinion on those financial
highlights.
 
    We conducted our audits in accordance with standards of the Public Company
Accounting Oversight Board (United States). Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements and financial highlights are free of material misstatement. An audit
includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements. Our procedures included confirmation of
securities owned as of October 31, 2004, by correspondence with the Trust's
custodian and brokers. An audit also includes assessing the accounting
principles used and significant estimates made by management, as well as
evaluating the overall financial statement presentation. We believe that our
audits provide a reasonable basis for our opinion.
 
    In our opinion, the financial statements and financial highlights referred
to above present fairly, in all material respects, the financial position of Van
Kampen Municipal Opportunity Trust as of October 31, 2004, the results of its
operations for the year then ended, the changes in its net assets and the
financial highlights for the respective stated periods, in conformity with
accounting principles generally accepted in the United States of America.
 
DELOITTE & TOUCHE LLP
Chicago, Illinois
December 10, 2004
 
                                                                              27

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
DIVIDEND REINVESTMENT PLAN
 
    The Trust offers a dividend reinvestment plan (the "Plan") pursuant to which
Common Shareholders may elect to have dividends and capital gains distributions
reinvested in Common Shares of the Trust. The Trust declares dividends out of
net investment income, and will distribute annually net realized capital gains,
if any. Common Shareholders may join or withdraw from the Plan at any time.
 
    If you decide to participate in the Plan, State Street Bank and Trust
Company, as your Plan Agent, will automatically invest your dividends and
capital gains distributions in Common Shares of the Trust for your account.
 
HOW TO PARTICIPATE
 
    If you wish to participate and your shares are held in your own name, call
1-800-341-2929 for more information and a Plan brochure. If your shares are held
in the name of a brokerage firm, bank, or other nominee, you should contact your
nominee to see if it would participate in the Plan on your behalf. If you wish
to participate in the Plan, but your brokerage firm, bank or nominee is unable
to participate on your behalf, you should request that your shares be
re-registered in your own name which will enable your participation in the Plan.
 
HOW THE PLAN WORKS
 
    Participants in the Plan will receive the equivalent in Common Shares valued
on the valuation date, generally at the lower of market price or net asset
value, except as specified below. The valuation date will be the dividend or
distribution payment date or, if that date is not a trading day on the national
securities exchange or market system on which the Common Shares are listed for
trading, the next preceding trading day. If the market price per Common Share on
the valuation date equals or exceeds net asset value per Common Share on that
date, the Trust will issue new Common Shares to participants valued at the
higher of net asset value or 95% of the market price on the valuation date. In
the foregoing situation, the Trust will not issue Common Shares under the Plan
below net asset value. If net asset value per Common Share on the valuation date
exceeds the market price per Common Share on that date, or if the Board of
Trustees should declare a dividend or capital gains distribution payable to the
Common Shareholders only in cash, participants in the Plan will be deemed to
have elected to receive Common Shares from the Trust valued at the market price
on that date. Accordingly, in this circumstance, the Plan Agent will, as agent
for the participants, buy the Trust's Common Shares in the open market for the
participants' accounts on or shortly after the payment date. If, before the Plan
Agent has completed its purchases, the market price exceeds the net asset value
per share of the Common Shares, the average per share purchase price paid by the
Plan Agent may exceed the net asset value
 
 28

VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
DIVIDEND REINVESTMENT PLAN continued
 
of the Trust's Common Shares, resulting in the acquisition of fewer Common
Shares than if the dividend or distribution had been paid in Common Shares
issued by the Trust. All reinvestments are in full and fractional Common Shares
and are carried to three decimal places.
 
    Experience under the Plan may indicate that changes are desirable.
Accordingly, the Trust reserves the right to amend or terminate the Plan as
applied to any dividend or distribution paid subsequent to written notice of the
changes sent to all Common Shareholders of the Trust at least 90 days before the
record date for the dividend or distribution. The Plan also may be amended or
terminated by the Plan Agent by at least 90 days written notice to all Common
Shareholders of the Trust.
 
COSTS OF THE PLAN
 
    The Plan Agent's fees for the handling of the reinvestment of dividends and
distributions will be paid by the Trust. However, each participant will pay a
pro rata share of brokerage commissions incurred with respect to the Plan
Agent's open market purchases in connection with the reinvestment of dividends
and distributions. No other charges will be made to participants for reinvesting
dividends or capital gains distributions, except for certain brokerage
commissions, as described above.
 
TAX IMPLICATIONS
 
    You will receive tax information annually for your personal records and to
help you prepare your federal income tax return. The automatic reinvestment of
dividends and capital gains distributions does not relieve you of any income tax
which may be payable on dividends or distributions.
 
RIGHT TO WITHDRAW
 
    Plan participants may withdraw at any time by calling 1-800-341-2929 or by
writing State Street Bank and Trust Company, P.O. Box 8200, Boston, MA
02266-8200. If you withdraw, you will receive, without charge, a share
certificate issued in your name for all full Common Shares credited to your
account under the Plan and a cash payment will be made for any fractional Common
Share credited to your account under the Plan. You may again elect to
participate in the Plan at any time by calling 1-800-341-2929 or writing to the
Trust at:
 
                              Van Kampen Funds Inc.
                              Attn: Closed-End Funds
                                2800 Post Oak Blvd.
                                 Houston, TX 77056
 
                                                                              29

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
BOARD OF TRUSTEES AND IMPORTANT ADDRESSES
 
BOARD OF TRUSTEES
 
DAVID C. ARCH
J. MILES BRANAGAN
JERRY D. CHOATE
ROD DAMMEYER
LINDA HUTTON HEAGY
R. CRAIG KENNEDY
HOWARD J KERR
MITCHELL M. MERIN*
JACK E. NELSON
RICHARD F. POWERS, III*
HUGO F. SONNENSCHEIN
WAYNE W. WHALEN* - Chairman
SUZANNE H. WOOLSEY
 
INVESTMENT ADVISER
 
VAN KAMPEN ASSET MANAGEMENT
1221 Avenue of the Americas
New York, New York 10020
 
CUSTODIAN AND TRANSFER AGENT
 
STATE STREET BANK
AND TRUST COMPANY
c/o EquiServe
P.O. Box 43011
Providence, Rhode Island 02940-3011
 
LEGAL COUNSEL
 
SKADDEN, ARPS, SLATE,
MEAGHER & FLOM LLP
333 West Wacker Drive
Chicago, Illinois 60606
 
INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
 
DELOITTE & TOUCHE LLP
180 North Stetson Avenue
Chicago, Illinois 60601
 
 For federal income tax purposes, the following information is furnished with
 respect to the distributions paid by the Trust during its taxable year ended
 October 31, 2004. The Trust designated 97.6% of the income distributions as a
 tax-exempt income distribution. The Trust designated and paid $3,842,711 as a
 long-term capital gain distribution. In January, the Trust provides tax
 information to shareholders for the preceding calendar year.
 
*   "Interested persons" of the Trust, as defined in the Investment Company Act
    of 1940, as amended.
 30

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
RESULTS OF SHAREHOLDER VOTES
 
The Annual Meeting of Shareholders of the Trust was held on June 23, 2004, where
shareholders voted on the election of trustees.
 
With regard to the election of the following trustees by common shareholders of
the Trust:
 


                                                                     # OF SHARES
                                                            ------------------------------
                                                             IN FAVOR             WITHHELD
------------------------------------------------------------------------------------------
                                                                            
R. Craig Kennedy..........................................  12,787,725            152,845
Jack E. Nelson............................................  12,785,261            155,309
Richard F. Powers, III....................................  12,772,638            167,932

 
With regards to the election of the following trustee by preferred shareholders
of the Trust:
 


                                                                      # OF SHARES
                                                              ----------------------------
                                                              IN FAVOR            WITHHELD
------------------------------------------------------------------------------------------
                                                                            
Hugo Sonnenschein...........................................   3,740                 20

 
The other trustees of the Trust whose terms did not expire in 2004 are David C.
Arch, J. Miles Branagan, Jerry D. Choate, Rod Dammeyer, Linda Hutton Heagy,
Howard J Kerr, Mitchell M. Merin, Wayne W. Whalen, and Suzanne H. Woolsey.
 
                                                                              31

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
TRUSTEE AND OFFICER INFORMATION
 
The business and affairs of the Trust are managed under the direction of the
Trust's Board of Trustees and the Trust's officers appointed by the Board of
Trustees. The tables below list the trustees and executive officers of the Trust
and their principal occupations during the last five years, other directorships
held by trustees and their affiliations, if any, with Van Kampen Investments
Inc. ("Van Kampen Investments"), Van Kampen Asset Management (the "Adviser"),
Van Kampen Funds Inc. (the "Distributor"), Van Kampen Advisors Inc., Van Kampen
Exchange Corp. and Van Kampen Investor Services Inc. ("Investor Services"). The
term "Fund Complex" includes each of the investment companies advised by the
Adviser or its affiliates as of the date of this Statement of Additional
Information. Trustees serve until reaching their retirement age or until their
successors are duly elected and qualified. Officers are annually elected by the
trustees.
 
INDEPENDENT TRUSTEES:
 


                                                                                  NUMBER OF
                                            TERM OF                                FUNDS IN
                                           OFFICE AND                                FUND
                              POSITION(S)  LENGTH OF                               COMPLEX
NAME, AGE AND ADDRESS          HELD WITH      TIME     PRINCIPAL OCCUPATION(S)     OVERSEEN    OTHER DIRECTORSHIPS
OF INDEPENDENT TRUSTEE           TRUST       SERVED    DURING PAST 5 YEARS        BY TRUSTEE   HELD BY TRUSTEE
                                                                                
David C. Arch (59)            Trustee      Trustee     Chairman and Chief             85       Trustee/Director/Managing
Blistex Inc.                               since 1992  Executive Officer of                    General Partner of funds
1800 Swift Drive                                       Blistex Inc., a consumer                in the Fund Complex.
Oak Brook, IL 60523                                    health care products
                                                       manufacturer. Director of
                                                       the Heartland Alliance, a
                                                       nonprofit organization
                                                       serving human needs based
                                                       in Chicago. Director of
                                                       St. Vincent de Paul
                                                       Center, a Chicago based
                                                       day care facility serving
                                                       the children of low
                                                       income families. Board
                                                       member of the Illinois
                                                       Manufacturers'
                                                       Association.

J. Miles Branagan (72)        Trustee      Trustee     Private investor.              83       Trustee/Director/Managing
1632 Morning Mountain Road                 since 2003  Co-founder, and prior to                General Partner of funds
Raleigh, NC 27614                                      August 1996, Chairman,                  in the Fund Complex.
                                                       Chief Executive Officer
                                                       and President, MDT
                                                       Corporation (now known as
                                                       Getinge/Castle, Inc., a
                                                       subsidiary of Getinge
                                                       Industrier AB), a company
                                                       which develops,
                                                       manufactures, markets and
                                                       services medical and
                                                       scientific equipment.

 
 32

 


VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
TRUSTEE AND OFFICER INFORMATION continued
                                                                                  NUMBER OF
                                            TERM OF                                FUNDS IN
                                           OFFICE AND                                FUND
                              POSITION(S)  LENGTH OF                               COMPLEX
NAME, AGE AND ADDRESS          HELD WITH      TIME     PRINCIPAL OCCUPATION(S)     OVERSEEN    OTHER DIRECTORSHIPS
OF INDEPENDENT TRUSTEE           TRUST       SERVED    DURING PAST 5 YEARS        BY TRUSTEE   HELD BY TRUSTEE
                                                                                

Jerry D. Choate (66)          Trustee      Trustee     Prior to January 1999,         83       Trustee/Director/Managing
33971 Selva Road                           since 2003  Chairman and Chief                      General Partner of funds
Suite 130                                              Executive Officer of the                in the Fund Complex.
Dana Point, CA 92629                                   Allstate Corporation                    Director of Amgen Inc., a
                                                       ("Allstate") and Allstate               biotechnological company,
                                                       Insurance Company. Prior                and Director of Valero
                                                       to January 1995,                        Energy Corporation, an
                                                       President and Chief                     independent refining
                                                       Executive Officer of                    company.
                                                       Allstate. Prior to August
                                                       1994, various management
                                                       positions at Allstate.

 
                                                                              33

 


VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
TRUSTEE AND OFFICER INFORMATION continued
                                                                                  NUMBER OF
                                            TERM OF                                FUNDS IN
                                           OFFICE AND                                FUND
                              POSITION(S)  LENGTH OF                               COMPLEX
NAME, AGE AND ADDRESS          HELD WITH      TIME     PRINCIPAL OCCUPATION(S)     OVERSEEN    OTHER DIRECTORSHIPS
OF INDEPENDENT TRUSTEE           TRUST       SERVED    DURING PAST 5 YEARS        BY TRUSTEE   HELD BY TRUSTEE
                                                                                

Rod Dammeyer (64)             Trustee      Trustee     President of CAC, L.L.C.,      85       Trustee/Director/Managing
CAC, L.L.C.                                since 1992  a private company                       General Partner of funds
4350 LaJolla Village Drive                             offering capital                        in the Fund Complex.
Suite 980                                              investment and management               Director of Stericycle,
San Diego, CA 92122-6223                               advisory services. Prior                Inc., Ventana Medical
                                                       to February 2001, Vice                  Systems, Inc., and GATX
                                                       Chairman and Director of                Corporation, and Trustee
                                                       Anixter International,                  of The Scripps Research
                                                       Inc., a global                          Institute and the
                                                       distributor of wire,                    University of Chicago
                                                       cable and communications                Hospitals and Health
                                                       connectivity products.                  Systems. Prior to January
                                                       Prior to July 2000,                     2004, Director of
                                                       Managing Partner of                     TeleTech Holdings Inc.
                                                       Equity Group Corporate                  and Arris Group, Inc.
                                                       Investment (EGI), a                     Prior to May 2002,
                                                       company that makes                      Director of Peregrine
                                                       private investments in                  Systems Inc. Prior to
                                                       other companies.                        February 2001, Director
                                                                                               of IMC Global Inc. Prior
                                                                                               to July 2000, Director of
                                                                                               Allied Riser
                                                                                               Communications Corp.,
                                                                                               Matria Healthcare Inc.,
                                                                                               Transmedia Networks,
                                                                                               Inc., CNA Surety, Corp.
                                                                                               and Grupo Azcarero Mexico
                                                                                               (GAM).

 
 34

 


VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
TRUSTEE AND OFFICER INFORMATION continued
                                                                                  NUMBER OF
                                            TERM OF                                FUNDS IN
                                           OFFICE AND                                FUND
                              POSITION(S)  LENGTH OF                               COMPLEX
NAME, AGE AND ADDRESS          HELD WITH      TIME     PRINCIPAL OCCUPATION(S)     OVERSEEN    OTHER DIRECTORSHIPS
OF INDEPENDENT TRUSTEE           TRUST       SERVED    DURING PAST 5 YEARS        BY TRUSTEE   HELD BY TRUSTEE
                                                                                

Linda Hutton Heagy (56)       Trustee      Trustee     Managing Partner of            83       Trustee/Director/Managing
Heidrick & Struggles                       since 2003  Heidrick & Struggles, an                General Partner of funds
233 South Wacker Drive                                 executive search firm.                  in the Fund Complex.
Suite 7000                                             Trustee on the University
Chicago, IL 60606                                      of Chicago Hospitals
                                                       Board, Vice Chair of the
                                                       Board of the YMCA of
                                                       Metropolitan Chicago and
                                                       a member of the Women's
                                                       Board of the University
                                                       of Chicago. Prior to
                                                       1997, Partner of Ray &
                                                       Berndtson, Inc., an
                                                       executive recruiting
                                                       firm. Prior to 1996,
                                                       Trustee of The
                                                       International House
                                                       Board, a fellowship and
                                                       housing organization for
                                                       international graduate
                                                       students. Prior to 1995,
                                                       Executive Vice President
                                                       of ABN AMRO, N.A., a bank
                                                       holding company. Prior to
                                                       1992, Executive Vice
                                                       President of La Salle
                                                       National Bank.

R. Craig Kennedy (52)         Trustee      Trustee     Director and President of      83       Trustee/Director/Managing
1744 R Street, NW                          since 2003  the German Marshall Fund                General Partner of funds
Washington, DC 20009                                   of the United States, an                in the Fund Complex.
                                                       independent U.S.
                                                       foundation created to
                                                       deepen understanding,
                                                       promote collaboration and
                                                       stimulate exchanges of
                                                       practical experience
                                                       between Americans and
                                                       Europeans. Formerly,
                                                       advisor to the Dennis
                                                       Trading Group Inc., a
                                                       managed futures and
                                                       option company that
                                                       invests money for
                                                       individuals and
                                                       institutions. Prior to
                                                       1992, President and Chief
                                                       Executive Officer,
                                                       Director and member of
                                                       the Investment Committee
                                                       of the Joyce Foundation,
                                                       a private foundation.

Howard J Kerr (69)            Trustee      Trustee     Prior to 1998, President       85       Trustee/Director/Managing
736 North Western Avenue                   since 1992  and Chief Executive                     General Partner of funds
P.O. Box 317                                           Officer of Pocklington                  in the Fund Complex.
Lake Forest, IL 60045                                  Corporation, Inc., an                   Director of the Lake
                                                       investment holding                      Forest Bank & Trust.
                                                       company. Director of the
                                                       Marrow Foundation.

 
                                                                              35

 


VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
TRUSTEE AND OFFICER INFORMATION continued
                                                                                  NUMBER OF
                                            TERM OF                                FUNDS IN
                                           OFFICE AND                                FUND
                              POSITION(S)  LENGTH OF                               COMPLEX
NAME, AGE AND ADDRESS          HELD WITH      TIME     PRINCIPAL OCCUPATION(S)     OVERSEEN    OTHER DIRECTORSHIPS
OF INDEPENDENT TRUSTEE           TRUST       SERVED    DURING PAST 5 YEARS        BY TRUSTEE   HELD BY TRUSTEE
                                                                                

Jack E. Nelson (68)           Trustee      Trustee     President of Nelson            83       Trustee/Director/Managing
423 Country Club Drive                     since 2003  Investment Planning                     General Partner of funds
Winter Park, FL 32789                                  Services, Inc., a                       in the Fund Complex.
                                                       financial planning
                                                       company and registered
                                                       investment adviser in the
                                                       State of Florida.
                                                       President of Nelson Ivest
                                                       Brokerage Services Inc.,
                                                       a member of the NASD,
                                                       Securities Investors
                                                       Protection Corp. and the
                                                       Municipal Securities
                                                       Rulemaking Board.
                                                       President of Nelson Sales
                                                       and Services Corporation,
                                                       a marketing and services
                                                       company to support
                                                       affiliated companies.

Hugo F. Sonnenschein (64)     Trustee      Trustee     President Emeritus and         85       Trustee/Director/Managing
1126 E. 59th Street                        since 1994  Honorary Trustee of the                 General Partner of funds
Chicago, IL 60637                                      University of Chicago and               in the Fund Complex.
                                                       the Adam Smith                          Director of Winston
                                                       Distinguished Service                   Laboratories, Inc.
                                                       Professor in the
                                                       Department of Economics
                                                       at the University of
                                                       Chicago. Prior to July
                                                       2000, President of the
                                                       University of Chicago.
                                                       Trustee of the University
                                                       of Rochester and a member
                                                       of its investment
                                                       committee. Member of the
                                                       National Academy of
                                                       Sciences, the American
                                                       Philosophical Society and
                                                       a fellow of the American
                                                       Academy of Arts and
                                                       Sciences.

Suzanne H. Woolsey, Ph.D.     Trustee      Trustee     Chief Communications           83       Trustee/Director/Managing
(62)                                       since 2003  Officer of the National                 General Partner of funds
815 Cumberstone Road                                   Academy of                              in the Fund Complex.
Harwood, MD 20776                                      Sciences/National                       Director of Fluor Corp.,
                                                       Research Council, an                    an engineering,
                                                       independent, federally                  procurement and
                                                       chartered policy                        construction
                                                       institution, from 2001 to               organization, since
                                                       November 2003 and Chief                 January 2004 and Director
                                                       Operating Officer from                  of Neurogen Corporation,
                                                       1993 to 2001. Director of               a pharmaceutical company,
                                                       the Institute for Defense               since January 1998.
                                                       Analyses, a federally
                                                       funded research and
                                                       development center,
                                                       Director of the German
                                                       Marshall Fund of the
                                                       United States, Director
                                                       of the Rocky Mountain
                                                       Institute and Trustee of
                                                       Colorado College. Prior
                                                       to 1993, Executive
                                                       Director of the
                                                       Commission on Behavioral
                                                       and Social Sciences and
                                                       Education at the National
                                                       Academy of
                                                       Sciences/National
                                                       Research Council. From
                                                       1980 through 1989,
                                                       Partner of Coopers &
                                                       Lybrand.

 
 36

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
TRUSTEE AND OFFICER INFORMATION continued
 
INTERESTED TRUSTEES:*
 


                                                                                  NUMBER OF
                                            TERM OF                                FUNDS IN
                                           OFFICE AND                                FUND
                              POSITION(S)  LENGTH OF                               COMPLEX
NAME, AGE AND ADDRESS          HELD WITH      TIME     PRINCIPAL OCCUPATION(S)     OVERSEEN    OTHER DIRECTORSHIPS
OF INTERESTED TRUSTEE            TRUST       SERVED    DURING PAST 5 YEARS        BY TRUSTEE   HELD BY TRUSTEE
                                                                                

Mitchell M. Merin* (51)       Trustee,     Trustee     President and Chief            83       Trustee/Director/Managing
1221 Avenue of the Americas   President    since       Executive Officer of                    General Partner of funds
New York, NY 10020            and Chief    2003;       funds in the Fund                       in the Fund Complex.
                              Executive    President   Complex. Chairman,
                              Officer      and Chief   President, Chief
                                           Executive   Executive Officer and
                                           Officer     Director of the Adviser
                                           since 2002  and Van Kampen Advisors
                                                       Inc. since December 2002.
                                                       Chairman, President and
                                                       Chief Executive Officer
                                                       of Van Kampen Investments
                                                       since December 2002.
                                                       Director of Van Kampen
                                                       Investments since
                                                       December 1999. Chairman
                                                       and Director of Van
                                                       Kampen Funds Inc. since
                                                       December 2002. President,
                                                       Director and Chief
                                                       Operating Officer of
                                                       Morgan Stanley Investment
                                                       Management since December
                                                       1998. President and
                                                       Director since April 1997
                                                       and Chief Executive
                                                       Officer since June 1998
                                                       of Morgan Stanley
                                                       Investment Advisors Inc.
                                                       and Morgan Stanley
                                                       Services Company Inc.
                                                       Chairman, Chief Executive
                                                       Officer and Director of
                                                       Morgan Stanley
                                                       Distributors Inc. since
                                                       June 1998. Chairman since
                                                       June 1998, and Director
                                                       since January 1998 of
                                                       Morgan Stanley Trust.
                                                       Director of various
                                                       Morgan Stanley
                                                       subsidiaries. President
                                                       of the Morgan Stanley
                                                       Funds since May 1999.
                                                       Previously Chief
                                                       Executive Officer of Van
                                                       Kampen Funds Inc. from
                                                       December 2002 to July
                                                       2003, Chief Strategic
                                                       Officer of Morgan Stanley
                                                       Investment Advisors Inc.
                                                       and Morgan Stanley
                                                       Services Company Inc. and
                                                       Executive Vice President
                                                       of Morgan Stanley
                                                       Distributors Inc. from
                                                       April 1997 to June 1998.
                                                       Chief Executive Officer
                                                       from September 2002 to
                                                       April 2003 and Vice
                                                       President from May 1997
                                                       to April 1999 of the
                                                       Morgan Stanley Funds.

 
                                                                              37

 


                                                                                  NUMBER OF
                                            TERM OF                                FUNDS IN
                                           OFFICE AND                                FUND
                              POSITION(S)  LENGTH OF                               COMPLEX
NAME, AGE AND ADDRESS          HELD WITH      TIME     PRINCIPAL OCCUPATION(S)     OVERSEEN    OTHER DIRECTORSHIPS
OF INTERESTED TRUSTEE            TRUST       SERVED    DURING PAST 5 YEARS        BY TRUSTEE   HELD BY TRUSTEE
                                                                                

Richard F. Powers, III* (58)  Trustee      Trustee     Advisory Director of           85       Trustee/Director/Managing
1 Parkview Plaza                           since 1999  Morgan Stanley. Prior to                General Partner of funds
P.O. Box 5555                                          December 2002, Chairman,                in the Fund Complex.
Oakbrook Terrace, IL 60181                             Director, President,
                                                       Chief Executive Officer
                                                       and Managing Director of
                                                       Van Kampen Investments
                                                       and its investment
                                                       advisory, distribution
                                                       and other subsidiaries.
                                                       Prior to December 2002,
                                                       President and Chief
                                                       Executive Officer of
                                                       funds in the Fund
                                                       Complex. Prior to May
                                                       1998, Executive Vice
                                                       President and Director of
                                                       Marketing at Morgan
                                                       Stanley and Director of
                                                       Dean Witter, Discover &
                                                       Co. and Dean Witter
                                                       Realty. Prior to 1996,
                                                       Director of Dean Witter
                                                       Reynolds Inc.

Wayne W. Whalen* (65)         Trustee      Trustee     Partner in the law firm        85       Trustee/Director/Managing
333 West Wacker Drive                      since 1992  of Skadden, Arps, Slate,                General Partner of funds
Chicago, IL 60606                                      Meagher & Flom LLP, legal               in the Fund Complex.
                                                       counsel to funds in the
                                                       Fund Complex.

 
*   Such Trustee is an "interested person" (within the meaning of Section
    2(a)(19) of the 1940 Act). Mr. Whalen is an interested person of certain
    funds in the Fund Complex by reason of his firm currently acting as legal
    counsel to such funds in the Fund Complex. Messrs. Merin and Powers are
    interested persons of funds in the Fund Complex and the Adviser by reason of
    their current or former positions with Morgan Stanley or its affiliates.
 
 38

 
VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
 
TRUSTEE AND OFFICER INFORMATION continued
 
OFFICERS:
 


                                                     TERM OF
                                                    OFFICE AND
                                   POSITION(S)      LENGTH OF
NAME, AGE AND                       HELD WITH          TIME     PRINCIPAL OCCUPATION(S)
ADDRESS OF OFFICER                    TRUST           SERVED    DURING PAST 5 YEARS
                                                       
Stefanie V. Chang (38)          Vice President      Officer     Executive Director of Morgan Stanley Investment Management.
1221 Avenue of the Americas     and Secretary       since 2003  Vice President of funds in the Fund Complex.
New York, NY 10020

Amy R. Doberman (42)            Vice President      Officer     Managing Director and General Counsel, U.S. Investment
1221 Avenue of the Americas                         since 2004  Management; Managing Director of Morgan Stanley Investment
New York, NY 10020                                              Management, Inc., Morgan Stanley Investment Advisers Inc.
                                                                and the Adviser. Vice President of the Morgan Stanley
                                                                Institutional and Retail Funds since July 2004 and Vice
                                                                President of funds in the Fund Complex as of August 2004.
                                                                Previously, Managing Director and General Counsel of
                                                                Americas, UBS Global Asset Management from July 2000 to July
                                                                2004 and General Counsel of Aeitus Investment Management,
                                                                Inc. from January 1997 to July 2000.

James M. Dykas (38)             Chief Financial     Officer     Executive Director of Van Kampen Asset Management and Morgan
1 Parkview Plaza                Officer and         since 1999  Stanley Investment Management. Chief Financial Officer and
Oakbrook Terrace, IL 60181      Treasurer                       Treasurer of funds in the Fund Complex. Prior to August
                                                                2004, Assistant Treasurer of funds in the Fund Complex.

Joseph J. McAlinden (61)        Executive Vice      Officer     Managing Director and Chief Investment Officer of Morgan
1221 Avenue of the Americas     President and       since 2002  Stanley Investment Advisors Inc., and Morgan Stanley
New York, NY 10020              Chief Investment                Investment Management Inc. and Director of Morgan Stanley
                                Officer                         Trust for over 5 years. Executive Vice President and Chief
                                                                Investment Officer of funds in the Fund Complex. Managing
                                                                Director and Chief Investment Officer of Van Kampen
                                                                Investments, the Adviser and Van Kampen Advisors Inc. since
                                                                December 2002.

Ronald E. Robison (65)          Executive Vice      Officer     Principal Executive Officer of the Funds since May 2003.
1221 Avenue of the Americas     President and       since 2003  Chief Executive Officer and Chairman of Investor Services.
New York, NY 10020              Principal                       Executive Vice President and Principal Executive Officer of
                                Executive                       funds in the Fund Complex. Managing Director of Morgan
                                Officer                         Stanley. Chief Administrative Officer, Managing Director and
                                                                Director of Morgan Stanley Investment Advisors Inc., Morgan
                                                                Stanley Services Company Inc. and Managing Director and
                                                                Director of Morgan Stanley Distributors Inc. Chief Executive
                                                                Officer and Director of Morgan Stanley Trust. Executive Vice
                                                                President and Principal Executive Officer of the
                                                                Institutional and Retail Morgan Stanley Funds; Director of
                                                                Morgan Stanley SICAV; previously Chief Global Operations
                                                                Officer and Managing Director of Morgan Stanley Investment
                                                                Management Inc.

 
                                                                              39

 


VAN KAMPEN MUNICIPAL OPPORTUNITY TRUST
TRUSTEE AND OFFICER INFORMATION continued
                                                     TERM OF
                                                    OFFICE AND
                                   POSITION(S)      LENGTH OF
NAME, AGE AND                       HELD WITH          TIME     PRINCIPAL OCCUPATION(S)
ADDRESS OF OFFICER                    TRUST           SERVED    DURING PAST 5 YEARS
                                                       

John L. Sullivan (49)           Chief Compliance    Officer     Chief Compliance Officer of funds in the Fund Complex since
1 Parkview Plaza                Officer             since 1998  August 2004. Director and Managing Director of Van Kampen
Oakbrook Terrace, IL 60181                                      Investments, the Adviser, Van Kampen Advisors Inc. and
                                                                certain other subsidiaries of Van Kampen Investments. Prior
                                                                August 2004, Vice President, Chief Financial Officer and
                                                                Treasurer of funds in the Fund Complex and head of Fund
                                                                Accounting for Morgan Stanley Investment Management. Prior
                                                                to December 2002, Executive Director of Van Kampen
                                                                Investments, the Adviser and Van Kampen Advisors Inc.

 
 40

 
VAN KAMPEN
 
AN IMPORTANT NOTICE CONCERNING OUR U.S. PRIVACY POLICY
 
    We are required by federal law to provide you with a copy of our Privacy
Policy annually.
 
    The following Policy applies to current and former individual clients of Van
Kampen Investments Inc., Van Kampen Asset Management, Van Kampen Advisors Inc.,
Van Kampen Funds Inc., Van Kampen Investor Services Inc. and Van Kampen Exchange
Corp., as well as current and former individual investors in Van Kampen mutual
funds, unit investment trusts, and related companies.
 
    This Policy is not applicable to partnerships, corporations, trusts or other
non-individual clients or account holders, nor is this Policy applicable to
individuals who are either beneficiaries of a trust for which we serve as
trustee or participants in an employee benefit plan administered or advised by
us. This Policy is, however, applicable to individuals who select us to be a
custodian of securities or assets in individual retirement accounts, 401(k)
accounts, 529 Educational Savings Accounts, accounts subject to the Uniform
Gifts to Minors Act, or similar accounts.
 
    Please note that we may amend this Policy at any time, and will inform you
of any changes to this Policy as required by law.
 
WE RESPECT YOUR PRIVACY
 
We appreciate that you have provided us with your personal financial
information. We strive to maintain the privacy of such information while we help
you achieve your financial objectives. This Policy describes what non-public
personal information we collect about you, why we collect it, and when we may
share it with others.
 
    We hope this Policy will help you understand how we collect and share
non-public personal information that we gather about you. Throughout this
Policy, we refer to the non-public information that personally identifies you or
your accounts as "personal information."
 
1. WHAT PERSONAL INFORMATION DO WE COLLECT ABOUT YOU?
 
To serve you better and manage our business, it is important that we collect and
maintain accurate information about you. We may obtain this information from
applications and other forms you submit to us, from your dealings with us, from
consumer reporting agencies, from our Web sites and from third parties and other
sources.
 
    For example:
 
     --  We may collect information such as your name, address, e-mail address,
         telephone/fax numbers, assets, income and investment objectives through
         applications and other forms you submit to us.
 
     --  We may obtain information about account balances, your use of
         account(s) and the types of products and services you prefer to receive
         from us through your dealings and transactions with us and other
         sources.
 
     --  We may obtain information about your creditworthiness and credit
         history from consumer reporting agencies.
 
     --  We may collect background information from and through third-party
         vendors to verify representations you have made and to comply with
         various regulatory requirements.
 
     --  If you interact with us through our public and private Web sites, we
         may collect information that you provide directly through online
         communications (such as an e-mail address). We may also collect
         information about your Internet service provider, your domain name,
         your computer's operating system and Web browser,
 
                                                             (continued on back)

VAN KAMPEN
 
AN IMPORTANT NOTICE CONCERNING OUR U.S. PRIVACY POLICY continued
 
         your use of our Web sites and your product and service preferences,
         through the use of "cookies." "Cookies" recognize your computer each
         time you return to one of our sites, and help to improve our sites'
         content and personalize your experience on our sites by, for example,
         suggesting offerings that may interest you. Please consult the Terms of
         Use of these sites for more details on our use of cookies.
 
2. WHEN DO WE DISCLOSE PERSONAL INFORMATION WE COLLECT ABOUT YOU?
 
To provide you with the products and services you request, to serve you better
and to manage our business, we may disclose personal information we collect
about you to our affiliated companies and to non-affiliated third parties as
required or permitted by law.
 
A. INFORMATION WE DISCLOSE TO OUR AFFILIATED COMPANIES. We do not disclose
personal information that we collect about you to our affiliated companies
except to enable them to provide services on our behalf or as otherwise required
or permitted by law.
 
B. INFORMATION WE DISCLOSE TO THIRD PARTIES. We do not disclose personal
information that we collect about you to non-affiliated third parties except to
enable them to provide services on our behalf, to perform joint marketing
agreements with other financial institutions, or as otherwise required or
permitted by law. For example, some instances where we may disclose information
about you to non-affiliated third parties include: for servicing and processing
transactions, to offer our own products and services, to protect against fraud,
for institutional risk control, to respond to judicial process or to perform
services on our behalf. When we share personal information with these companies,
they are required to limit their use of personal information to the particular
purpose for which it was shared and they are not allowed to share personal
information with others except to fulfill that limited purpose.
 
3. HOW DO WE PROTECT THE SECURITY AND CONFIDENTIALITY OF PERSONAL INFORMATION WE
COLLECT ABOUT YOU?
 
We maintain physical, electronic and procedural security measures to help
safeguard the personal information we collect about you. We have internal
policies governing the proper handling of client information. Third parties that
provide support or marketing services on our behalf may also receive personal
information, and we require them to adhere to confidentiality standards with
respect to such information.
 
                                                 Van Kampen Funds Inc.
                                                 1 Parkview Plaza, P.O. Box 5555
                                                 Oakbrook Terrace, IL 60181-5555
                                                 www.vankampen.com
 
                                      (VAN KAMPEN INVESTMENTS LOGO)
 
                                                 Copyright (C)2004 Van Kampen
                                                 Funds Inc. All rights reserved.
                                                 Member NASD/SIPC.
                                                 VMO ANR
                                                 12/04 RN04-02835P-Y10/04






Item 2.  Code of Ethics.

(a) The Trust has adopted a code of ethics (the "Code of Ethics") that applies
to its principal executive officer, principal financial officer, principal
accounting officer or controller, or persons performing similar functions,
regardless of whether these individuals are employed by the Trust or a third
party.

(b) No information need be disclosed pursuant to this paragraph.

(c) The Trust has amended its Code of Ethics during the period covered by the
shareholder report presented in Item 1 hereto to delete from the end of the
following paragraph on page 2 of the Code the phrase "to the detriment of the
Fund.":
 
"Each Covered Officer must not use his personal influence or personal
relationship improperly to influence investment decisions or financial reporting
by the Fund whereby the Covered Officer would benefit personally (directly or
indirectly)."

Further, due to personnel changes at the Adviser, the list of Covered Officers
set forth in Exhibit B and the General Counsel designee to whom questions about
the application of the Code should be referred in Exhibit C have been amended.

(d) Not applicable.

(e) Not applicable.

(f)
         (1)      The Trust's Code of Ethics is attached hereto as Exhibit 11A.
         (2)      Not applicable.
         (3)      Not applicable.

Item 3.  Audit Committee Financial Expert.

The Trust's Board of Trustees has determined that it has three "audit committee
financial experts" serving on its audit committee, each of whom are
"independent" Trustees : J. Miles Branagan, Jerry Choate and R. Craig Kennedy.
Under applicable securities laws, a person who is determined to be an audit
committee financial expert will not be deemed an "expert" for any purpose,
including without limitation for the purposes of Section 11 of the Securities
Act of 1933, as a result of being designated or identified as an audit committee
financial expert. The designation or identification of a person as an audit
committee financial expert does not impose on such person any duties,
obligations, or liabilities that are greater than the duties, obligations, and
liabilities imposed on such person as a member of the audit committee and Board
of Trustees in the absence of such designation or identification.




Item 4.  Principal Accountant Fees and Services.

(a)(b)(c)(d) and (g).  Based on fees billed for the periods shown:



         2004
                                              REGISTRANT     COVERED ENTITIES(1)
                                                                            
            AUDIT FEES...................     $29,480        N/A

            NON-AUDIT FEES
                 AUDIT-RELATED FEES......     $370(2)        $198,000(3)
                 TAX FEES................     $1,550(4)      $0
                 ALL OTHER FEES..........     $0             $0
            TOTAL NON-AUDIT FEES.........     $1,920         $198,000

            TOTAL........................     $31,400        $198,000






         2003
                                              REGISTRANT     COVERED ENTITIES(1)
                                                                            
            AUDIT FEES...................     $27,574        N/A

            NON-AUDIT FEES
                 AUDIT-RELATED FEES......     $370(2)        $230,000(3)
                 TAX FEES................     $1,500(4)      $0
                 ALL OTHER FEES..........     $0             $0
            TOTAL NON-AUDIT FEES.........     $1,870         $230,000

            TOTAL........................     $29,444        $230,000



         N/A- Not applicable, as not required by Item 4.

         (1) Covered Entities include the Adviser (excluding sub-advisors)
             and any entity controlling, controlled by or under common
             control with the Adviser that provides ongoing services to the
             Registrant.

         (2) Audit-Related Fees represent agreed upon procedures provided
             that are reasonably related to the performance of the audit of
             the financial statements of the Registrant.

         (3) Audit-Related Fees represent assurance and related services
             provided that are reasonably related to the performance of the
             audit of the financial statements of the Covered Entities' and
             funds advised by the Adviser or its affiliates, specifically
             attestation services provided in connection with a SAS 70
             Report.

         (4) Tax Fees represent tax advice and compliance services provided
             in connection with the review of the Registrant's tax.









(e)(1) The audit committee's pre-approval policies and procedures are as 
follows:

                              JOINT AUDIT COMMITTEE
                          AUDIT AND NON-AUDIT SERVICES
                       PRE-APPROVAL POLICY AND PROCEDURES
                                     OF THE
                                VAN KAMPEN FUNDS

              AS ADOPTED JULY 23, 2003 AND AMENDED MAY 26, 2004(1)


1.       STATEMENT OF PRINCIPLES

         The Audit Committee of the Board is required to review and, in its sole
discretion, pre-approve all Covered Services to be provided by the Independent
Auditors to the Fund and Covered Entities in order to assure that services
performed by the Independent Auditors do not impair the auditor's independence
from the Fund.(2)

         The SEC has issued rules specifying the types of services that an
independent auditor may not provide to its audit client, as well as the audit
committee's administration of the engagement of the independent auditor. The
SEC's rules establish two different approaches to pre-approving services, which
the SEC considers to be equally valid. Proposed services either: may be
pre-approved without consideration of specific case-by-case services by the
Audit Committee ("general pre-approval"); or require the specific pre-approval
of the Audit Committee ("specific pre-approval"). The Audit Committee believes
that the combination of these two approaches in this Policy will result in an
effective and efficient procedure to pre-approve services performed by the
Independent Auditors. As set forth in this Policy, unless a type of service has
received general pre-approval, it will require specific pre-approval by the
Audit Committee (or by any member of the Audit Committee to which pre-approval
authority has been delegated) if it is to be provided by the Independent
Auditors. Any proposed services exceeding pre-approved cost levels or budgeted
amounts will also require specific pre-approval by the Audit Committee.

         For both types of pre-approval, the Audit Committee will consider
whether such services are consistent with the SEC's rules on auditor
independence. The Audit Committee will also consider whether the Independent
Auditors are best positioned to provide the most effective and efficient
services, for reasons such as its familiarity with the Fund's business, people,
culture, accounting systems, risk profile and other factors, and whether the
service might enhance the Fund's ability to manage or control risk or improve
audit quality. All such factors will be considered as a whole, and no one factor
should necessarily be determinative.

         The Audit Committee is also mindful of the relationship between fees
for audit and non-audit services in deciding whether to pre-approve any such
services and may determine for each fiscal year, the appropriate ratio between
the total amount of fees for Audit, Audit-related and Tax services for the Fund
(including any Audit-related or Tax service fees for Covered Entities that were
subject to pre-approval), and the total amount of fees for certain permissible
non-audit services classified as All Other services for the Fund (including any
such services for Covered Entities subject to pre-approval).

The appendices to this Policy describe the Audit, Audit-related, Tax and All
Other services that have the general pre-approval of the Audit Committee. The
term of any general pre-approval is 12 months from the date of pre-approval,
unless the Audit Committee considers and provides a different period and states
otherwise. The Audit Committee will annually review and pre-approve the services
that may be provided by the Independent Auditors without obtaining specific
pre-approval


--------
(1)      This Joint Audit Committee Audit and Non-Audit Services Pre-Approval
         Policy and Procedures (the "Policy"), amended as of the date above,
         supercedes and replaces all prior versions that may have been
         amended from time to time.
(2)      Terms used in this Policy and not otherwise defined herein shall have
         the meanings as defined in the Joint Audit Committee Charter.







from the Audit Committee. The Audit Committee will add to or subtract from the
list of general pre-approved services from time to time, based on subsequent
determinations.

         The purpose of this Policy is to set forth the policy and procedures by
which the Audit Committee intends to fulfill its responsibilities. It does not
delegate the Audit Committee's responsibilities to pre-approve services
performed by the Independent Auditors to management.

         The Fund's Independent Auditors have reviewed this Policy and believes
that implementation of the Policy will not adversely affect the Independent
Auditors' independence.


2.       DELEGATION

         As provided in the Act and the SEC's rules, the Audit Committee may
delegate either type of pre-approval authority to one or more of its members.
The member to whom such authority is delegated must report, for informational
purposes only, any pre-approval decisions to the Audit Committee at its next
scheduled meeting.


3.       AUDIT SERVICES

         The annual Audit services engagement terms and fees are subject to the
specific pre-approval of the Audit Committee. Audit services include the annual
financial statement audit and other procedures required to be performed by the
Independent Auditors to be able to form an opinion on the Fund's financial
statements. These other procedures include information systems and procedural
reviews and testing performed in order to understand and place reliance on the
systems of internal control, and consultations relating to the audit. The Audit
Committee will monitor the Audit services engagement as necessary, but no less
than on a quarterly basis, and will also approve, if necessary, any changes in
terms, conditions and fees resulting from changes in audit scope, Fund structure
or other items.

         In addition to the annual Audit services engagement approved by the
Audit Committee, the Audit Committee may grant general pre-approval to other
Audit services, which are those services that only the Independent Auditors
reasonably can provide. Other Audit services may include statutory audits and
services associated with SEC registration statements (on Forms N-1A, N-2, N-3,
N-4, etc.), periodic reports and other documents filed with the SEC or other
documents issued in connection with securities offerings.

         The Audit Committee has pre-approved the Audit services in Appendix
B.1. All other Audit services not listed in Appendix B.1 must be specifically
pre-approved by the Audit Committee (or by any member of the Audit Committee to
which pre-approval has been delegated).


4.       AUDIT-RELATED SERVICES

         Audit-related services are assurance and related services that are
reasonably related to the performance of the audit or review of the Fund's
financial statements or, to the extent they are Covered Services, the Covered
Entities' financial statements, or that are traditionally performed by the
Independent Auditors. Because the Audit Committee believes that the provision of
Audit-related services does not impair the independence of the auditor and is
consistent with the SEC's rules on auditor independence, the Audit Committee may
grant general pre-approval to Audit-related services. Audit-related services
include, among others, accounting consultations related to accounting, financial
reporting or disclosure matters not classified as "Audit services"; assistance
with understanding and implementing new accounting and financial reporting
guidance from rulemaking authorities; agreed-upon or expanded audit procedures
related to accounting and/or billing records required to respond to or comply
with financial, accounting or regulatory reporting matters; and assistance with
internal control reporting requirements under Forms N-SAR and/or N-CSR.








         The Audit Committee has pre-approved the Audit-related services in
Appendix B.2. All other Audit-related services not listed in Appendix B.2 must
be specifically pre-approved by the Audit Committee (or by any member of the
Audit Committee to which pre-approval has been delegated).


5.       TAX SERVICES

         The Audit Committee believes that the Independent Auditors can provide
Tax services to the Fund and, to the extent they are Covered Services, the
Covered Entities, such as tax compliance, tax planning and tax advice without
impairing the auditor's independence, and the SEC has stated that the
Independent Auditors may provide such services. Hence, the Audit Committee
believes it may grant general pre-approval to those Tax services that have
historically been provided by the Independent Auditors, that the Audit Committee
has reviewed and believes would not impair the independence of the Independent
Auditors, and that are consistent with the SEC's rules on auditor independence.
The Audit Committee will not permit the retention of the Independent Auditors in
connection with a transaction initially recommended by the Independent Auditors,
the sole business purpose of which may be tax avoidance and the tax treatment of
which may not be supported in the Internal Revenue Code and related regulations.
The Audit Committee will consult with Director of Tax or outside counsel to
determine that the tax planning and reporting positions are consistent with this
policy.

         Pursuant to the preceding paragraph, the Audit Committee has
pre-approved the Tax Services in Appendix B.3. All Tax services involving large
and complex transactions not listed in Appendix B.3 must be specifically
pre-approved by the Audit Committee (or by any member of the Audit Committee to
which pre-approval has been delegated), including tax services proposed to be
provided by the Independent Auditors to any executive officer or
trustee/director/managing general partner of the Fund, in his or her individual
capacity, where such services are paid for by the Fund (generally applicable
only to internally managed investment companies).


6.       ALL OTHER SERVICES

         The Audit Committee believes, based on the SEC's rules prohibiting the
Independent Auditors from providing specific non-audit services, that other
types of non-audit services are permitted. Accordingly, the Audit Committee
believes it may grant general pre-approval to those permissible non-audit
services classified as All Other services that it believes are routine and
recurring services, would not impair the independence of the auditor and are
consistent with the SEC's rules on auditor independence.

         The Audit Committee has pre-approved the All Other services in Appendix
B.4. Permissible All Other services not listed in Appendix B.4 must be
specifically pre-approved by the Audit Committee (or by any member of the Audit
Committee to which pre-approval has been delegated).

         A list of the SEC's prohibited non-audit services is attached to this
policy as Appendix B.5. The SEC's rules and relevant guidance should be
consulted to determine the precise definitions of these services and the
applicability of exceptions to certain of the prohibitions.


7.       PRE-APPROVAL FEE LEVELS OR BUDGETED AMOUNTS

         Pre-approval fee levels or budgeted amounts for all services to be
provided by the Independent Auditors will be established annually by the Audit
Committee. Any proposed services exceeding these levels or amounts will require
specific pre-approval by the Audit Committee. The Audit Committee is mindful of
the overall relationship of fees for audit and non-audit services in determining
whether to pre-approve any such services. For each fiscal year, the Audit
Committee may determine the appropriate ratio between the total amount of fees
for Audit, Audit-related, and Tax services for the Fund (including any
Audit-related or Tax services fees for Covered Entities subject to
pre-approval), and the total amount of fees for certain permissible non-audit
services classified as All Other services for the Fund (including any such
services for Covered Entities subject to pre-approval).









8.       PROCEDURES

         All requests or applications for services to be provided by the
Independent Auditors that do not require specific approval by the Audit
Committee will be submitted to the Fund's Chief Financial Officer and must
include a detailed description of the services to be rendered. The Fund's Chief
Financial Officer will determine whether such services are included within the
list of services that have received the general pre-approval of the Audit
Committee. The Audit Committee will be informed on a timely basis of any such
services rendered by the Independent Auditors. Requests or applications to
provide services that require specific approval by the Audit Committee will be
submitted to the Audit Committee by both the Independent Auditors and the Fund's
Chief Financial Officer, and must include a joint statement as to whether, in
their view, the request or application is consistent with the SEC's rules on
auditor independence.

         The Audit Committee has designated the Fund's Chief Financial Officer
to monitor the performance of all services provided by the Independent Auditors
and to determine whether such services are in compliance with this Policy. The
Fund's Chief Financial Officer will report to the Audit Committee on a periodic
basis on the results of its monitoring. A sample report is included as Appendix
B.7. Both the Fund's Chief Financial Officer and management will immediately
report to the chairman of the Audit Committee any breach of this Policy that
comes to the attention of the Fund's Chief Financial Officer or any member of
management.


9.       ADDITIONAL REQUIREMENTS

         The Audit Committee has determined to take additional measures on an
annual basis to meet its responsibility to oversee the work of the Independent
Auditors and to assure the auditor's independence from the Fund, such as
reviewing a formal written statement from the Independent Auditors delineating
all relationships between the Independent Auditors and the Fund, consistent with
Independence Standards Board No. 1, and discussing with the Independent Auditors
its methods and procedures for ensuring independence.


10.      COVERED ENTITIES

         Covered Entities include the Fund's investment adviser(s) and any
entity controlling, controlled by or under common control with the Fund's
investment adviser(s) that provides ongoing services to the Fund(s). Beginning
with non-audit service contracts entered into on or after May 6, 2003, the
Fund's audit committee must pre-approve non-audit services provided not only to
the Fund but also to the Covered Entities if the engagements relate directly to
the operations and financial reporting of the Fund. This list of Covered
Entities would include:


         -    Van Kampen Investments Inc.
         -    Van Kampen Asset Management
         -    Van Kampen Advisors Inc.
         -    Van Kampen Funds Inc.
         -    Van Kampen Investor Services Inc.
         -    Morgan Stanley Investment Management Inc.
         -    Morgan Stanley Trust Company
         -    Morgan Stanley Investment Management Ltd.
         -    Morgan Stanley Investment Management Company
         -    Morgan Stanley Asset & Investment Trust Management Company Ltd.


(e)(2) Beginning with non-audit service contracts entered into on or after May
6, 2003, the audit committee also is required to pre-approve services to Covered
Entities to the extent that the services




are determined to have a direct impact on the operations or financial reporting
of the Registrant. 100% of such services were pre-approved by the audit
committee pursuant to the Audit Committee's pre-approval policies and procedures
(included herein).

(f)     Not applicable.

(g)     See table above.

(h) The audit committee of the Board of Trustees has considered whether the
provision of services other than audit services performed by the auditors to the
Registrant and Covered Entities is compatible with maintaining the auditors'
independence in performing audit services.

Item 5.  Audit Committee of Listed Registrants.

(a) The Trust has a separately-designated standing audit committee established
in accordance with Section 3(a)(58)(A) of the Exchange Act whose members are:
Craig Kennedy, Jerry Choate and Rod Dammeyer.

(b) Not applicable.

Item 6.  Schedule of Investments.

Please refer to Item #1.

Item 7.  Disclosure of Proxy Voting Policies and Procedures for Closed-End
Management Investment Companies.

The Trust invests in exclusively non-voting securities and therefore this item
is not applicable to the Trust.

Item 8.  Purchase of Equity Securities by Closed-End Management Investment
Company and Affiliated Purchasers.

Not Applicable.

Item 9.  Submission of Matters to a Vote of Security Holders.

Not Applicable.

Item 10. Controls and Procedures

(a) The Trust's principal executive officer and principal financial officer have
concluded that the Trust's disclosure controls and procedures are sufficient to
ensure that information required to be disclosed by the Trust in this Form N-CSR
was recorded, processed, summarized and reported within the time periods
specified in the Securities and Exchange Commission's rules and forms, based
upon such officers' evaluation of these controls and procedures as of a date
within 90 days of the filing date of the report.

(b) There were no changes in the registrant's internal control over financial
reporting that occurred during the registrant's most recent fiscal half-year
(the registrant's second fiscal half-year in the case of an annual report) that
has materially affected, or is reasonably likely to materially affect, the
registrant's internal control over financial reporting.

Item 11.  Exhibits.

(a) The Code of Ethics for Principal Executive and Senior Financial Officers is
attached hereto.








(b)(1) A certification for the Principal Executive Officer of the registrant is
attached hereto as part of EX-99.CERT. 
(b)(2) A certification for the Principal Financial Officer of the registrant is 
attached hereto as part of EX-99.CERT.








SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant)  Van Kampen Municipal Opportunity Trust

By: /s/ Ronald E. Robison
    ---------------------
Name: Ronald E. Robison
Title: Principal Executive Officer
Date: December 14, 2004

Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, this report has been signed by the following
persons on behalf of the registrant and in the capacities and on the dates
indicated.

By: /s/ Ronald E. Robison
    ---------------------
Name: Ronald E. Robison
Title: Principal Executive Officer
Date: December 14, 2004

By: /s/ James M. Dykas
    ------------------
Name: James M. Dykas
Title: Principal Financial Officer
Date: December 14, 2004