Ownership Submission
FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  BSMB/ACA LLC
2. Date of Event Requiring Statement (Month/Day/Year)
11/09/2006
3. Issuer Name and Ticker or Trading Symbol
ACA Capital Holdings Inc [ACA]
(Last)
(First)
(Middle)
C/O ACA CAPITAL HOLDINGS, INC., 140 BROADWAY
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NEW YORK, NY 10005
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Series B Senior Convertible Preferred Stock   (1)(2)   (1)(2) Common Stock 10,113,982.98 $ (1) (2) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
BSMB/ACA LLC
C/O ACA CAPITAL HOLDINGS, INC.
140 BROADWAY
NEW YORK, NY 10005
    X    
HOWARD JOHN
C/O ACA CAPITAL HOLDINGS, INC.
140 BROADWAY
NEW YORK, NY 10005
    X    

Signatures

/s/ Stacey Tyson, Attorney-In-Fact 11/09/2006
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The Series B Senior Convertible Preferred Stock has no expiration date and, upon the closing of the initial public offering of the issuer, will convert into shares of the issuer's common stock on a 6-for-1 basis. The number of shares reported reflects the 6-for-1 conversion.
(2) See Remarks
 
Remarks:
The reported securities are directly owned by BSMB/ACA LLC. This report is also being filed by John D. Howard, a senior managing director of Bear, Stearns & Co. Inc., a subsidiary of The Bear Stearns Companies Inc. Through his ownership of JDH Management LLC ("JDH"), Mr. Howard exercises investment discretion over the reported securities held by the several investment limited partnerships controlled by Bear Stearns Merchant Capital II, L.P. (collectively, "BSMBP II") and BSMB/ACA LLC. JDH is the manager of Bear Stearns Merchant Manager II, LLC, which is the manager of BSMB/ACA LLC and the special limited partner of Bear Stearns Merchant Capital II, L.P. The Bear Stearns Companies Inc. is the managing member of Bear Stearns Merchant GP II, LLC, which is the general partner of Bear Stearns Merchant Capital II, L.P., the general partner of each of the several investment partnerships that comprise BSMBP II. Mr. Howard and The Bear Stearns Companies Inc. share investment and voting power with respect to shares owned by BSMBP II and BSMB/ACA LLC, but disclaim beneficial ownership of such shares, except to the extent of their pecuniary interests therein. The reporting persons may be deemed members of a Section 13(d) "group" pursuant to the issuer's stockholders agreement. This filing shall not be deemed an admission that any reporting person is, for purposes of Section 13(d) or Section 16 of the Securities Exchange Act of 1934, as amended or otherwise, a member of a group or the beneficial owner of any securities in excess of the amount in which the reporting person has a pecuniary interest. Exhibit List: Exhibit 24.1: Power of Attorney, Exhibit 24.2: Power of Attorney, Exhibit 99: Joint Filer Information.

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