SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Act of 1934 QUANTA CAPITAL HOLDINGS LTD -------------------------------------------------------------------------------- (Name of Issuer) COMMON SHARES, $.01 PER SHARE PAR VALUE -------------------------------------------------------------------------------- (Title of Class of Securities) G7313F106 -------------------------------------------------------------------------------- (CUSIP Number) DECEMBER 31, 2004 -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [_] Rule 13d-1(c) [_] Rule 13d-1(d) ---------- (1) The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). CUSIP No.G7313F106 13G ________________________________________________________________________________ 1. NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) FRIEDMAN, BILLINGS, RAMSEY GROUP, INC. 54-1873198 ________________________________________________________________________________ 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [X] ________________________________________________________________________________ 3. SEC USE ONLY ________________________________________________________________________________ 4. CITIZENSHIP OR PLACE OF ORGANIZATION VIRGINIA ________________________________________________________________________________ NUMBER OF 5. SOLE VOTING POWER 2,688,172 SHARES _________________________________________________________________ BENEFICIALLY 6. SHARED VOTING POWER 4,301,367 OWNED BY _________________________________________________________________ EACH 7. SOLE DISPOSITIVE POWER 2,688,172 REPORTING _________________________________________________________________ PERSON 8. SHARED DISPOSITIVE POWER 4,301,367 WITH ________________________________________________________________________________ 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,301,367 ________________________________________________________________________________ 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 7.57% ________________________________________________________________________________ 12. TYPE OF REPORTING PERSON* HC ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No.G7313F106 13G Item 1(a). Name of Issuer: Quanta Capital Holdings Ltd. ____________________________________________________________________ Item 1(b). Address of Issuer's Principal Executive Offices: 1 Victoria Street, Fourth Floor Hamilton HM11 Bermuda ____________________________________________________________________ Item 2(a). Name of Person Filing: Friedman, Billings, Ramsey Group, Inc. ____________________________________________________________________ Item 2(b). Address of Principal Business Office, or if None, Residence: 1001 19th Street North Arlington, VA 22209 ____________________________________________________________________ Item 2(c). Citizenship: Virginia ____________________________________________________________________ Item 2(d). Title of Class of Securities: Class A Common Stock ____________________________________________________________________ Item 2(e). CUSIP Number: G7313F106 ____________________________________________________________________ Item 3. If This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b) or (c), Check Whether the Person Filing is a: (a) [_] Broker or dealer registered under Section 15 of the Exchange Act. (b) [_] Bank as defined in Section 3(a)(6) of the Exchange Act. (c) [_] Insurance company as defined in Section 3(a)(19) of the Exchange Act. (d) [_] Investment company registered under Section 8 of the Investment Company Act. (e) [_] An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E); (f) [_] An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F); (g) [X] A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G); (h) [_] A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act; (i) [_] A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act; (j) [_] Group, in accordance with Rule 13d-1(b)(1)(ii)(J). CUSIP No.G7313F106 13G Item 4. Ownership. Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1. (a) Amount beneficially owned: 4,301,019 ______________________________________________________________________ (b) Percent of class: 7.57% ______________________________________________________________________ (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 2,688,172, (ii) Shared power to vote or to direct the vote: 4,301,367, (iii) Sole power to dispose or to direct the disposition of: 2,688,172 (iv) Shared power to dispose or to direct the disposition of: 4,301,367 Item 5. Ownership of Five Percent or Less of a Class. If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities check the following [ ]. _______________________________________________________________________ Item 6. Ownership of More Than Five Percent on Behalf of Another Person. _______________________________________________________________________ Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person. FBR Investment Management, Inc. Friedman, Billings, Ramsey & Co., Inc. _______________________________________________________________________ Item 8. Identification and Classification of Members of the Group. _______________________________________________________________________ Item 9. Notice of Dissolution of Group. ______________________________________________________________________ Item 10. Certifications. (a) The following certification shall be included if the statement is filed pursuant to Rule 13d-1(b): "By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having such purpose or effect." (b) The following certification shall be included if the statement is filed pursuant to Rule 13d-1(c): "By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having such purpose or effect." SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. February 15, 2005 ---------------------------------------- (Date) /S/Emanuel J. Friedman ---------------------------------------- (Signature) Emanuel J. Friedman Co-Chairman and Co-CEO ---------------------------------------- (Name/Title) Note. Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties for whom copies are to be sent. Attention. Intentional misstatements or omissions of fact constitute federal criminal violations (see 18 U.S.C. 1001).