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

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED
MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number 811-21702

Name of Fund: BlackRock Health Sciences Trust (BME)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: Anne F. Ackerley, Chief Executive Officer, BlackRock Health Sciences Trust, 40 East 52nd Street, New York, NY 10022.

Registrant’s telephone number, including area code: (800) 882-0052, Option 4

Date of fiscal year end: 10/31/2009

Date of reporting period: 07/31/2009



 

 

Item 1 – Schedule of Investments


 

 



Schedule of Investments July 31, 2009 (Unaudited)

BlackRock Health Sciences Trust (BME)

 

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

Common Stocks

 

Shares

 

Value

 







Biotechnology—13.7%

 

 

 

 

 

 

 

3SBio, Inc. - ADR (a)

 

 

31,200

 

$

302,952

 

Alexion Pharmaceuticals, Inc. (a)

 

 

74,900

 

 

3,299,345

 

Amgen, Inc. (a)

 

 

93,800

 

 

5,844,678

 

Amylin Pharmaceuticals, Inc. (a)

 

 

133,300

 

 

1,960,843

 

ARYx Therapeutics, Inc. (a)

 

 

20,300

 

 

69,223

 

Celera Corp. (a)

 

 

193,300

 

 

1,159,800

 

Dendreon Corp. (a)

 

 

157,200

 

 

3,805,812

 

Immunogen, Inc. (a)

 

 

13,200

 

 

114,708

 

Incyte Corp. Ltd. (a)

 

 

35,700

 

 

185,640

 

Life Technologies Corp. (a)

 

 

54,900

 

 

2,499,597

 

Millipore Corp. (a)

 

 

38,400

 

 

2,672,640

 

Nanosphere, Inc. (a)

 

 

14,000

 

 

98,840

 

Vertex Pharmaceuticals, Inc. (a)

 

 

105,590

 

 

3,802,296

 

 

 

 

 

 



 

 

 

 

 

 

 

25,816,374

 









Commercial Services—1.2%

 

 

 

 

 

 

 

McKesson Corp.

 

 

42,710

 

 

2,184,617

 









Electronics—4.1%

 

 

 

 

 

 

 

Mettler-Toledo International, Inc. (a)

 

 

11,600

 

 

975,096

 

PerkinElmer, Inc.

 

 

205,600

 

 

3,624,728

 

Thermo Fisher Scientific, Inc. (a)

 

 

68,500

 

 

3,101,680

 

 

 

 

 

 



 

 

 

 

 

 

 

7,701,504

 









Healthcare Products—29.6%

 

 

 

 

 

 

 

Alcon, Inc.

 

 

55,800

 

 

7,120,080

 

Beckman Coulter, Inc.

 

 

16,180

 

 

1,019,178

 

Boston Scientific Corp. (a)

 

 

332,200

 

 

3,567,828

 

Cie Generale d’Optique Essilor International SA

 

 

56,800

 

 

3,148,284

 

Cooper Cos., Inc. (The)

 

 

57,200

 

 

1,569,568

 

Coviden Plc

 

 

101,660

 

 

3,843,765

 

CR Bard, Inc.

 

 

18,000

 

 

1,324,260

 

DENTSPLY International, Inc.

 

 

63,200

 

 

2,107,720

 

DiaSorin SpA

 

 

45,300

 

 

1,265,275

 

Elekta AB

 

 

12,900

 

 

202,780

 

Henry Schein, Inc. (a)

 

 

53,000

 

 

2,723,140

 

Hill-Rom Holdings, Inc.

 

 

92,400

 

 

1,583,736

 

Johnson & Johnson

 

 

138,970

 

 

8,461,883

 

Medtronic, Inc.

 

 

82,090

 

 

2,907,628

 

Mindray Medical International Ltd. - ADR

 

 

40,400

 

 

1,200,688

 

Patterson Cos., Inc. (a)

 

 

13,700

 

 

347,432

 

QIAGEN NV (a)

 

 

155,500

 

 

2,948,280

 

ResMed, Inc. (a)

 

 

11,900

 

 

487,900

 

Smith & Nephew Plc

 

 

185,400

 

 

1,468,908

 

Sonova Holding AG

 

 

27,000

 

 

2,376,565

 

Tecan Group AG

 

 

31,100

 

 

1,336,996

 

Varian Medical Systems, Inc. (a)

 

 

21,300

 

 

751,251

 

Wright Medical Group, Inc. (a)

 

 

57,300

 

 

797,616

 

Zimmer Holdings, Inc. (a)

 

 

71,800

 

 

3,345,880

 

 

 

 

 

 



 

 

 

 

 

 

 

55,906,641

 









Healthcare Services—6.6%

 

 

 

 

 

 

 

Aetna, Inc.

 

 

53,000

 

 

1,429,410

 

Coventry Health Care, Inc. (a)

 

 

88,200

 

 

2,028,600

 

DaVita, Inc. (a)

 

 

37,580

 

 

1,867,726

 

Fresenius Medical Care AG & Co. KGaA

 

 

21,400

 

 

982,868

 

UnitedHealth Group, Inc.

 

 

38,000

 

 

1,066,280

 

WellPoint, Inc. (a)

 

 

96,200

 

 

5,063,968

 

 

 

 

 

 



 

 

 

 

 

 

 

12,438,852

 









Pharmaceuticals—32.1%

 

 

 

 

 

 

 

Abbott Laboratories

 

 

88,940

 

 

4,001,411

 

Allergan, Inc.

 

 

50,900

 

 

2,719,587

 

Auxilium Pharmaceuticals, Inc. (a)

 

 

25,200

 

 

779,436

 

BioForm Medical, Inc. (a)

 

 

12,800

 

 

32,128

 

BioMarin Pharmaceutical, Inc. (a)

 

 

90,028

 

 

1,477,359

 

Bristol-Myers Squibb Co.

 

 

231,700

 

 

5,037,158

 

Cypress Bioscience, Inc. (a)

 

 

4,200

 

 

37,128

 

Express Scripts, Inc. (a)

 

 

37,880

 

 

2,653,115

 

Gilead Sciences, Inc. (a)

 

 

34,760

 

 

1,700,807

 

GlaxoSmithKline Plc

 

 

209,700

 

 

4,017,765

 

Human Genome Sciences, Inc. (a)

 

 

33,600

 

 

480,480

 

MAP Pharmaceuticals, Inc. (a)

 

 

15,700

 

 

159,983

 

 

 

 

 

 

 

 

 

Common Stocks

 

Shares

 

Value

 







Pharmaceuticals— (concluded)

 

 

 

 

 

 

 

Medco Health Solutions, Inc. (a)

 

 

90,210

 

$

4,768,501

 

Medivation, Inc. (a)

 

 

30,600

 

 

757,350

 

Merck & Co., Inc.

 

 

124,200

 

 

3,727,242

 

Novartis AG

 

 

70,400

 

 

3,216,540

 

Novartis AG - ADR

 

 

22,390

 

 

1,021,432

 

Novo Nordisk A/S

 

 

18,600

 

 

1,088,378

 

Pfizer, Inc.

 

 

437,800

 

 

6,974,154

 

Pharmasset, Inc. (a)

 

 

15,700

 

 

241,623

 

Roche Holding AG

 

 

35,750

 

 

5,635,876

 

Shire Plc - ADR

 

 

21,800

 

 

976,858

 

Teva Pharmaceutical Industries Ltd. - ADR

 

 

38,650

 

 

2,061,591

 

VCA Antech, Inc. (a)

 

 

79,200

 

 

2,025,936

 

Wyeth

 

 

105,132

 

 

4,893,894

 

 

 

 

 

 



 

 

 

 

 

 

 

60,485,732

 









Retail—3.8%

 

 

 

 

 

 

 

CVS Caremark Corp.

 

 

215,200

 

 

7,204,896

 









Software—2.1%

 

 

 

 

 

 

 

Allscripts-Misys Healthcare Solutions, Inc.

 

 

102,700

 

 

1,769,521

 

Cerner Corp. (a)

 

 

35,000

 

 

2,277,800

 

 

 

 

 

 



 

 

 

 

 

 

 

4,047,321

 









Total Long-Term Investments
(Cost—$157,609,558)—93.2%

 

 

 

 

 

175,785,937

 

















Short-Term Securities

 

 

 

 

 

 

 









BlackRock Liquidity Funds, TempFund, 0.29% (b)(c)

 

 

5,602,199

 

 

5,602,199

 









Total Short-Term Securities
(Cost—$5,602,199)—3.0%

 

 

 

 

 

5,602,199

 

















Options Purchased

 

Contracts

 

 

 

 








Exchange-Traded Call Option Purchased—0.0%

 

 

 

 

 

 

 

Gen-Probe, Inc., Strike Price $45, Expires 8/24/09

 

 

150

 

 

1,399

 









Total Options Purchased
(Cost—$1,549)
0.0%

 

 

 

 

 

1,399

 









Total Investments Before Outstanding Options Written
(Cost—$163,213,306
*)—96.2%

 

 

 

 

 

181,389,535

 

















Options Written

 

 

 

 

 

 

 









Exchange-Traded Call Options Written—(1.0)%

 

 

 

 

 

 

 

3SBio, Inc. - ADR, Strike Price $10, Expires
9/21/09

 

 

(80

)

 

(5,400

)

Abbott Laboratories, Strike Price $49,
Expires 11/23/09

 

 

(50

)

 

(4,750

)

Abbott Laboratories, Strike Price $50,
Expires 8/24/09

 

 

(100

)

 

(500

)

Aetna, Inc., Strike Price $30, Expires
9/21/09

 

 

(80

)

 

(6,600

)

Alcon, Inc., Strike Price $120, Expires
11/23/09

 

 

(100

)

 

(127,500

)

Alcon, Inc., Strike Price $130, Expires
11/23/09

 

 

(100

)

 

(69,500

)

Alexion Pharmaceuticals, Inc., Strike Price
$40, Expires 11/23/09

 

 

(135

)

 

(87,750

)

Alexion Pharmaceuticals, Inc., Strike Price
$40, Expires 8/24/09

 

 

(50

)

 

(22,000

)

Alexion Pharmaceuticals, Inc., Strike Price
$45, Expires 11/23/09

 

 

(100

)

 

(36,500

)

Allscripts-Misys Healthcare Solutions, Inc.,
Strike Price $15, Expires 8/24/09

 

 

(160

)

 

(35,200

)

Amgen, Inc., Strike Price $57.50, Expires
8/24/09

 

 

(70

)

 

(40,250

)

Auxilium Pharmaceuticals, Inc., Strike
Price $30, Expires 8/24/09

 

 

(60

)

 

(12,300

)

Beckman Coulter, Inc., Strike Price $60,
Expires 8/24/09

 

 

(80

)

 

(28,800

)



 

 

 

 

 

 

 

 

 

1

 

   JULY 31, 2009

 




 

 



Schedule of Investments (continued)

BlackRock Health Sciences Trust (BME)

 

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

Options Written

 

Contracts

 

Value

 


Exchange-Traded Call Options Written— (continued)

 

 

 

 

 

 

 

Beckman Coulter, Inc., Strike Price $60,
Expires 9/21/09

 

 

(25

)

$

(10,875

)

BioMarin Pharmaceuticals, Inc., Strike
Price $17.50, Expires 8/24/09

 

 

(40

)

 

(1,000

)

BioMarin Pharmaceuticals, Inc., Strike
Price $17.50, Expires 9/21/09

 

 

(90

)

 

(5,400

)

Boston Scientific Corp., Strike Price $10,
Expires 8/24/09

 

 

(930

)

 

(83,700

)

Boston Scientific Corp., Strike Price $11,
Expires 11/23/09

 

 

(400

)

 

(39,000

)

Bristol-Myers Squibb Co., Strike Price $21,
Expires 12/21/09

 

 

(100

)

 

(18,400

)

Bristol-Myers Squibb Co., Strike Price $21,
Expires 8/24/09

 

 

(240

)

 

(23,880

)

Cerner Corp., Strike Price $75, Expires
12/21/09

 

 

(120

)

 

(30,900

)

Cooper Cos., Inc. (The), Strike Price $30,
Expires 11/23/09

 

 

(70

)

 

(10,325

)

Cooper Cos., Inc. (The), Strike Price $30,
Expires 8/24/09

 

 

(120

)

 

(2,100

)

Coventry Health Care, Inc., Strike Price
$20, Expires 8/24/09

 

 

(240

)

 

(75,600

)

CVS Caremark Corp., Strike Price $32.50,
Expires 8/24/09

 

 

(670

)

 

(105,525

)

DaVita, Inc., Strike Price $50, Expires
8/24/09

 

 

(115

)

 

(21,275

)

DaVita, Inc., Strike Price $55, Expires
8/24/09

 

 

(8

)

 

(220

)

Dendreon Corp., Strike Price $30, Expires
11/23/09

 

 

(100

)

 

(17,050

)

Dendreon Corp., Strike Price $30, Expires
8/24/09

 

 

(150

)

 

(2,850

)

Dendreon Corp., Strike Price $35, Expires
11/23/09

 

 

(100

)

 

(8,900

)

Express Scripts, Inc., Strike Price $70,
Expires 8/24/09

 

 

(100

)

 

(20,250

)

Express Scripts, Inc., Strike Price $75,
Expires 11/23/09

 

 

(50

)

 

(15,750

)

Gen-Probe, Inc., Strike Price $50, Expires
8/24/09

 

 

(150

)

 

(1,500

)

Gilead Sciences, Inc., Strike Price $47.50,
Expires 8/24/09

 

 

(90

)

 

(19,125

)

Gilead Sciences, Inc., Strike Price $49,
Expires 8/24/09

 

 

(257

)

 

(30,840

)

Henry Schein, Inc., Strike Price $45,
Expires 8/24/09

 

 

(30

)

 

(20,100

)

Henry Schein, Inc., Strike Price $50,
Expires 8/24/09

 

 

(130

)

 

(34,125

)

Johnson & Johnson, Strike Price $60,
Expires 8/24/09

 

 

(190

)

 

(29,450

)

Life Technologies Corp., Strike Price $45,
Expires 11/23/09

 

 

(95

)

 

(35,150

)

McKesson Corp., Inc., Strike Price $47.50,
Expires 8/24/09

 

 

(100

)

 

(39,000

)

McKesson Corp., Inc., Strike Price $50,
Expires 11/23/09

 

 

(50

)

 

(19,000

)

McKesson Corp., Inc., Strike Price $55,
Expires 11/23/09

 

 

(50

)

 

(7,750

)

Medco Health Solutions, Inc., Strike Price
$55, Expires 9/21/09

 

 

(100

)

 

(13,000

)

Medtronic, Inc., Strike Price $35, Expires
8/24/09

 

 

(150

)

 

(16,500

)

Medtronic, Inc., Strike Price $36, Expires
8/24/09

 

 

(450

)

 

(27,000

)

Merck & Co., Inc., Strike Price $28, Expires
8/24/09

 

 

(350

)

 

(80,500

)

Mettler-Toledo International, Inc., Strike
Price $75, Expires 8/24/09

 

 

(40

)

 

(38,000

)

Mettler-Toledo International, Inc., Strike
Price $85, Expires 8/24/09

 

 

(30

)

 

(5,775

)

 

 

 

 

 

 

 

 

Options Written

 

Contracts

 

Value

 


Exchange-Traded Call Options Written— (concluded)

 

 

 

 

 

 

 

Millipore Corp., Strike Price $70, Expires
8/24/09

 

 

(110

)

$

(22,825

)

Mindray Medical International Ltd. - ADR,
Strike Price $30, Expires 8/24/09

 

 

(30

)

 

(4,575

)

Novartis AG - ADR, Strike Price $45,
Expires 8/24/09

 

 

(50

)

 

(6,375

)

Patterson Cos., Inc., Strike Price $22.50,
Expires 8/24/09

 

 

(30

)

 

(9,300

)

PerkinElmer, Inc., Strike Price $17.50,
Expires 9/21/09

 

 

(450

)

 

(43,875

)

Pfizer, Inc., Strike Price $15, Expires
9/21/09

 

 

(500

)

 

(57,000

)

QIAGEN NV, Strike Price $17.50, Expires
8/24/09

 

 

(150

)

 

(25,875

)

QIAGEN NV, Strike Price $20, Expires
11/23/09

 

 

(150

)

 

(15,000

)

QIAGEN NV, Strike Price $20, Expires
8/24/09

 

 

(150

)

 

(3,750

)

ResMed, Inc., Strike Price $40, Expires
8/24/09

 

 

(119

)

 

(23,503

)

Shire Plc - ADR, Strike Price $45, Expires
9/21/09

 

 

(2

)

 

(410

)

Teva Pharmaceutical Industries Ltd. - ADR,
Strike Price $52.50, Expires 9/21/09

 

 

(96

)

 

(20,880

)

UnitedHealth Group, Inc., Strike Price $27,
Expires 9/21/09

 

 

(300

)

 

(69,000

)

VCA Antech, Inc., Strike Price $25, Expires
8/24/09

 

 

(100

)

 

(11,750

)

Vertex Pharmaceuticals, Inc., Strike Price
$35, Expires 8/24/09

 

 

(250

)

 

(50,000

)

WellPoint, Inc., Strike Price $55, Expires
8/24/09

 

 

(425

)

 

(38,250

)

WellPoint, Inc., Strike Price $60, Expires
12/21/09

 

 

(100

)

 

(23,000

)

Wright Medical Group, Inc., Strike Price
$17.50, Expires 8/24/09

 

 

(145

)

 

(1,812

)

Wyeth, Strike Price $45, Expires 8/24/09

 

 

(200

)

 

(39,000

)

Wyeth, Strike Price $47.50, Expires
9/21/09

 

 

(200

)

 

(16,000

)

Zimmer Holdings, Inc., Strike Price $50,
Expires 9/21/09

 

 

(50

)

 

(4,750

)









Total Exchange-Traded Call Options Written

 

 

 

 

 

(1,873,795

)









Exchange-Traded Put Options Written—(0.1)%

 

 

 

 

 

 

 

BioMarin Pharmaceuticals, Inc., Strike
Price $12.50, Expires 9/21/09

 

 

(90

)

 

(1,575

)

Boston Scientific Corp., Strike Price $9,
Expires 11/23/09

 

 

(250

)

 

(10,000

)

Covidien Plc, Strike Price $35, Expires
8/24/09

 

 

(75

)

 

(1,125

)

CVS Caremark Corp., Strike Price $30,
Expires 8/24/09

 

 

(250

)

 

(3,750

)

Dendreon Corp., Strike Price $19, Expires
11/23/09

 

 

(100

)

 

(15,550

)

Express Scripts, Inc., Strike Price $60,
Expires 11/23/09

 

 

(50

)

 

(8,750

)

McKesson Corp., Inc., Strike Price $50,
Expires 8/24/09

 

 

(185

)

 

(12,950

)

Merck & Co., Inc., Strike Price $30, Expires
8/24/09

 

 

(85

)

 

(8,075

)

Pfizer, Inc., Strike Price $14, Expires
8/24/09

 

 

(300

)

 

(1,350

)

Teva Pharmaceutical Industries Ltd. - ADR,
Strike Price $47.50, Expires 8/24/09

 

 

(40

)

 

(300

)

VCA Antech, Inc., Strike Price $25, Expires
8/24/09

 

 

(35

)

 

(1,225

)









Total Exchange-Traded Put Options Written

 

 

 

 

 

(64,650

)











 

 

 

 

 

 

 

 

 

 

JULY 31, 2009

2




 

 



Schedule of Investments (continued)

BlackRock Health Sciences Trust (BME)

 

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

Options Written

 

Contracts

 

Value

 







Over-the-Counter Call Options Written—(0.5)%

 

 

 

 

 

 

 

Allergan, Inc., Strike Price $50, Expires
11/20/09, Broker UBS Securities LLC

 

 

(15,000

)

$

(85,678

)

Allscripts-Misys Healthcare Solutions, Inc.,
Strike Price $17, Expires 11/03/09,
Broker Jefferies & Co., Inc.

 

 

(150

)

 

(23,850

)

Amgen, Inc., Strike Price $61.95, Expires
11/03/09, Broker Banc of America
Securities

 

 

(20,000

)

 

(97,046

)

Amylin Pharmaceuticals, Inc., Strike Price
$16, Expires 11/10/09, Broker Citigroup
Global Markets

 

 

(20,000

)

 

(25,583

)

Bristol-Myers Squibb Co., Strike Price
$20.50, Expires 11/03/09, Broker
Citigroup Global Markets

 

 

(18,800

)

 

(30,285

)

Bristol-Myers Squibb Co., Strike Price $22,
Expires 11/03/09, Broker Banc of
America Securities

 

 

(20,000

)

 

(18,645

)

Celera Corp., Strike Price $9.33, Expires
8/04/09, Broker Citigroup Global
Markets

 

 

(38,500

)

 

 

Cie Generale d’Optique Essilor
International SA, Strike Price 34.83 EUR,
Expires 8/20/09, Broker Credit Suisse
First Boston

 

 

(13,500

)

 

(78,630

)

Coviden Plc, Strike Price $37.50, Expires
9/14/09, Broker Barclays Capital, Inc.

 

 

(240

)

 

(40,437

)

Dendreon Corp., Strike Price $31, Expires
8/21/09, Broker Barclays Capital, Inc.

 

 

(185

)

 

(4,662

)

Dentsply International, Inc., Strike Price
$30.50, Expires 11/13/09, Broker
Jefferies & Co., Inc.

 

 

(200

)

 

(72,400

)

DiaSorin SpA, Strike Price 18.34 EUR,
Expires 8/12/09, Broker UBS Securities
LLC

 

 

(10,000

)

 

(18,230

)

Fresenius Medical Care AG & Co. KGaA,
Strike Price 32.56 EUR, Expires
8/05/09, Broker Morgan Stanley & Co.,
Inc.

 

 

(6,000

)

 

(2,278

)

GlaxoSmithKline Plc, Strike Price 12.04
GBP, Expires 11/04/09, Broker UBS
Securities LLC

 

 

(53,000

)

 

(22,015

)

Hill-Rom Holdings, Inc., Strike Price
$17.50, Expires 11/13/09, Broker
Jefferies & Co., Inc.

 

 

(175

)

 

(21,470

)

Johnson & Johnson, Strike Price $56,
Expires 8/27/09, Broker UBS Securities
LLC

 

 

(150

)

 

(81,150

)

Johnson & Johnson, Strike Price $65,
Expires 11/03/09, Broker Banc of
America Securities

 

 

(15,000

)

 

(14,863

)

Medco Health Solutions, Inc., Strike Price
$49, Expires 8/13/09, Broker UBS
Securities LLC

 

 

(80

)

 

(33,728

)

PerkinElmer, Inc., Strike Price $18, Expires
11/03/09, Broker Jefferies & Co., Inc.

 

 

(150

)

 

(9,771

)

Pfizer, Inc., Strike Price $15.14, Expires
8/17/09, Broker Citigroup Global
Markets

 

 

(87,000

)

 

(84,000

)

Roche Holding AG, Strike Price 162.75
CHF, Expires 11/04/09, Broker Citigroup
Global Markets

 

 

(11,000

)

 

(108,332

)

Smith & Nephew Plc, Strike Price 4.60
GBP, Expires 9/16/09, Broker Credit
Suisse First Boston

 

 

(35,000

)

 

(14,206

)

Sonova Holding AG, Strike Price 90.56
CHF, Expires 8/19/09, Broker BNP
Paribas

 

 

(6,400

)

 

(26,129

)

 

 

 

 

 

 

 

 

Options Written

 

Contracts

 

Value

 







Over-the-Counter Call Options Written— (concluded)

 

 

 

 

 

 

 

Vertex Pharmaceuticals, Inc., Strike Price
$38, Expires 11/03/09, Broker Banc of
America Securities

 

 

(15,000

)

$

(33,435

)









Total Over-the-Counter Call Options Written

 

 

 

 

 

(946,823

)









Total Options Written
(Premiums Received $1,994,550)—(1.6)%

 

 

 

 

 

(2,885,268

)









Total Investments Net of Outstanding Options Written—
94.6%

 

178,504,267

 

Other Assets in Excess of Liabilities—5.4%

 

 

 

 

 

10,102,644

 

 

 

 

 

 



 

Net Assets—100.0%

 

 

 

 

$

188,606,911

 

 

 

 

 

 



 


 

 

*

The cost and unrealized appreciation (depreciation) of investments as of July 31, 2009, as computed for federal income tax purposes, were as follows:


 

 

 

 

 

 

 

Aggregate cost

 

$

164,701,835

 

 

 

 



 

 

Gross unrealized appreciation

 

$

21,886,639

 

 

Gross unrealized depreciation

 

 

(5,198,939

)

 

 

 



 

 

Net unrealized appreciation

 

$

16,687,700

 

 

 

 



 


 

 



(a)

Non-income producing security.

 

 

(b)

Represents current yield as of report date.

 

 

(c)

Investments in companies considered to be an affiliate of the Trust, for purposes of Section 2(a)(3) of the Investment Company Act of 1940 were as follows:


 

 

 

 

 

 

 

 

 

 









 

Affiliate

 

Net Activity

 

Income

 

 









 

BlackRock Liquidity Funds, TempFund

 

5,602,199

 

 

$

100,066

 

 

BlackRock Liquidity Series, LLC Money Market Series

 

(2,226,500

)

 

$

5,198

 

 










 

 

Foreign currency exchange contracts as of July 31, 2009 were as follows:


 

 

 

 

 

 

 

 

 

 

 

 

 

 















Currency
Purchased

 

Currency
Sold

 

Counterparty

 

Settlement
Date

 

Unrealized
Appreciation















SEK

1,466,000

 

USD

203,047

 

Citigroup Global
Markets

 

8/04/09

 

 

$

117

 
















 

 

 

Effective November 1, 2008, the Trust adopted Financial Accounting Standards Board Statement of Financial Accounting Standards No. 157, “Fair Value Measurements” (“FAS 157”). FAS 157 clarifies the definition of fair value, establishes a framework for measuring fair values and requires additional disclosures about the use of fair value measurements. Various inputs are used in determining the fair value of investments, which are as follows:

 

 

 

 

Level 1 — price quotations in active markets/exchanges for identical securities

 

 

 

 

Level 2 — other observable inputs (including, but not limited to: quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

 

 

 

 

Level 3 — unobservable inputs based on the best information available In the circumstances, to the extent observable inputs are not available (including the Trust’s own assumptions used in determining the fair value of investments)

The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. For information about the Trust’s policy regarding valuation of investments and other significant accounting policies, please refer to the Trust’s most recent financial statements as contained in its semi-annual report.



 

 

 

 

 

 

 

 

3

 

JULY 31, 2009

 




 

 


Schedule of Investments (continued)

BlackRock Health Sciences Trust (BME)

 

(Percentages shown are based on Net Assets)


The following tables summarize the inputs used as of July 31, 2009 in determining the fair valuation of the Trust’s investments:

 

 

 

 

 

 

 

 

 

 

 

 

 

 





 

 

Valuation Inputs

 





 

 

Level 1

 

Level 2

 

Level 3

 

Total

 

Investments in Securities:

 

 

 

 

 

 

 

 

 

 

 

 

 

Assets:

 

 

 

 

 

 

 

 

 

 

 

 

 

Common Stocks:

 

 

 

 

 

 

 

 

 

 

 

 

 

Biotechnology

 

$

25,816,374

 

 

 

 

 

$

25,816,374

 

Commercial
Services

 

 

2,184,617

 

 

 

 

 

 

2,184,617

 

Electronics

 

 

7,701,504

 

 

 

 

 

 

7,701,504

 

Healthcare
Products

 

 

46,107,833

 

$

9,798,808

 

 

 

 

55,906,641

 

Healthcare
Services

 

 

11,455,984

 

 

982,868

 

 

 

 

12,438,852

 

Pharmaceuticals

 

 

46,527,173

 

 

13,958,559

 

 

 

 

60,485,732

 

Retail

 

 

7,204,896

 

 

 

 

 

 

7,204,896

 

Software

 

 

4,047,321

 

 

 

 

 

 

4,047,321

 

Short-Term
Securities

 

 

5,602,199

 

 

 

 

 

 

5,602,199

 

 

 












 

Total

 

$

156,647,901

 

$

24,740,235

 

 

 

$

181,388,136

 

 

 












 


 

 

 

 

 

 

 

 







Valuation
   Inputs

 

Other Financial Instruments1

 







 

 

Assets

 

Liabilities

 

 

 


 


 

Level 1

 

$

1,399

 

$

(1,938,445

)

Level 2

 

 

117

 

 

(946,823

)

Level 3

 

 

 

 

 









Total

 

$

1,516

 

$

(2,885,268

)

 

 






 


 

 

1

Other financial instruments are options, options written and foreign currency exchange contracts. Options and options written are shown at market value and foreign currency contracts are valued at the unrealized appreciation/depreciation on the instrument.


 

 

          KEY TO ABBREVIATIONS

 

 

ADR —

American Depositary Receipt

CHF —

Swiss Franc

EUR —

Euro

GBP —

British Pound

SEK —

Swedish Krona

USD —

US Dollar

 

 



 

 

 

 

 

 

 

 

 

 

JULY 31, 2009

4




 

 

Item 2 – Controls and Procedures


 

 

2(a) –

The registrant’s principal executive and principal financial officers or persons performing similar functions have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective as of a date within 90 days of the filing of this report based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rule 13(a)-15(b) under the Securities Exchange Act of 1934, as amended.

 

 

2(b) –

There were no changes in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act) that occurred during the registrant’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant’s internal control over financial reporting.

 

 

Item 3 – Exhibits

 

 

 

Certifications – Attached hereto

 

 

 

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.

 

 

 

BlackRock Health Sciences Trust


 

 

 

 

 

By:

 

 

 

/s/ Anne F. Ackerley

 

 

 

Anne F. Ackerley

 

 

Chief Executive Officer of

 

 

BlackRock Health Sciences Trust

 

 

 

 

Date: September 22, 2009

 

 

 

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

 

 

 

By:

 

 

 

/s/ Anne F. Ackerley

 

 

 

Anne F. Ackerley

 

 

Chief Executive Officer (principal executive officer) of
BlackRock Health Sciences Trust

 

 

 

 

Date: September 22, 2009

 

 

 

 

By:

 

 

 

/s/ Neal J. Andrews

 

 

 

Neal J. Andrews

 

 

Chief Financial Officer (principal financial officer) of
BlackRock Health Sciences Trust

 

 

 

 

Date: September 22, 2009