CAO Csk Auto Corp

CUSIP No. 125965103 13G


________________________________________________________________________________
1. NAME OF REPORTING PERSONS


 FRIEDMAN, BILLINGS, RAMSEY GROUP, INC.

________________________________________________________________________________
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 (a) [ ]
 (b) [ ]

________________________________________________________________________________
3. SEC USE ONLY



________________________________________________________________________________
4. CITIZENSHIP OR PLACE OF ORGANIZATION

 VIRGINIA

________________________________________________________________________________
 NUMBER OF 5. SOLE VOTING POWER

 SHARES
 _________________________________________________________________
BENEFICIALLY 6. SHARED VOTING POWER
 2,496,769
 OWNED BY
 _________________________________________________________________
 EACH 7. SOLE DISPOSITIVE POWER

 REPORTING
 _________________________________________________________________
 PERSON 8. SHARED DISPOSITIVE POWER
 2,496,769
 WITH
________________________________________________________________________________
9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 2,496,769

________________________________________________________________________________
10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

 [_]

________________________________________________________________________________
11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 5.67%

________________________________________________________________________________
12. TYPE OF REPORTING PERSON*

 HC

________________________________________________________________________________
 *SEE INSTRUCTIONS BEFORE FILLING OUT

CUSIP No. 125965103 13G


________________________________________________________________________________
1. NAME OF REPORTING PERSONS

 FBR TRS HOLDINGS, INC.


________________________________________________________________________________
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 (a) [ ]
 (b) [ ]

________________________________________________________________________________
3. SEC USE ONLY



________________________________________________________________________________
4. CITIZENSHIP OR PLACE OF ORGANIZATION

 VIRGINIA

________________________________________________________________________________
 NUMBER OF 5. SOLE VOTING POWER
 0
 SHARES
 _________________________________________________________________
BENEFICIALLY 6. SHARED VOTING POWER
 2,496,769
 OWNED BY
 _________________________________________________________________
 EACH 7. SOLE DISPOSITIVE POWER
 0
 REPORTING
 _________________________________________________________________
 PERSON 8. SHARED DISPOSITIVE POWER
 2,496,769
 WITH
________________________________________________________________________________
9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 2,496,769

________________________________________________________________________________
10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

 [_]

________________________________________________________________________________
11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 5.67%

________________________________________________________________________________
12. TYPE OF REPORTING PERSON*

 CO

________________________________________________________________________________
 *SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No. 125985103 13G


________________________________________________________________________________
1. NAME OF REPORTING PERSONS

 FBR CAPITAL MARKETS CORPORATION


________________________________________________________________________________
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 (a) [ ]
 (b) [ ]

________________________________________________________________________________
3. SEC USE ONLY



________________________________________________________________________________
4. CITIZENSHIP OR PLACE OF ORGANIZATION

 VIRGINIA

________________________________________________________________________________
 NUMBER OF 5. SOLE VOTING POWER
 0
 SHARES
 _________________________________________________________________
BENEFICIALLY 6. SHARED VOTING POWER
 2,496,769
 OWNED BY
 _________________________________________________________________
 EACH 7. SOLE DISPOSITIVE POWER
 0
 REPORTING
 _________________________________________________________________
 PERSON 8. SHARED DISPOSITIVE POWER
 2,496,769
 WITH
________________________________________________________________________________
9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 2,496,769

________________________________________________________________________________
10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

 [_]

________________________________________________________________________________
11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 5.67%

________________________________________________________________________________
12. TYPE OF REPORTING PERSON*

 CO

________________________________________________________________________________
 *SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No. 125965103 13G


________________________________________________________________________________
1. NAME OF REPORTING PERSONS

 FBR ASSET MANAGEMENT HOLDINGS, INC.


________________________________________________________________________________
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 (a) [ ]
 (b) [ ]

________________________________________________________________________________
3. SEC USE ONLY



________________________________________________________________________________
4. CITIZENSHIP OR PLACE OF ORGANIZATION

 VIRGINIA

________________________________________________________________________________
 NUMBER OF 5. SOLE VOTING POWER
 0
 SHARES
 _________________________________________________________________
BENEFICIALLY 6. SHARED VOTING POWER
 2,496,769
 OWNED BY
 _________________________________________________________________
 EACH 7. SOLE DISPOSITIVE POWER
 0
 REPORTING
 _________________________________________________________________
 PERSON 8. SHARED DISPOSITIVE POWER
 2,496,769
 WITH
________________________________________________________________________________
9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 2,496,769

________________________________________________________________________________
10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

 [_]

________________________________________________________________________________
11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 5.67%

________________________________________________________________________________
12. TYPE OF REPORTING PERSON*

 CO

________________________________________________________________________________
 *SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No. 125965103 13G


________________________________________________________________________________
1. NAME OF REPORTING PERSONS

 FBR FUND ADVISERS, INC.


________________________________________________________________________________
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 (a) [ ]
 (b) [ ]

________________________________________________________________________________
3. SEC USE ONLY



________________________________________________________________________________
4. CITIZENSHIP OR PLACE OF ORGANIZATION

 DELAWARE

________________________________________________________________________________
 NUMBER OF 5. SOLE VOTING POWER
 0
 SHARES
 _________________________________________________________________
BENEFICIALLY 6. SHARED VOTING POWER
 2,496,769
 OWNED BY
 _________________________________________________________________
 EACH 7. SOLE DISPOSITIVE POWER
 0
 REPORTING
 _________________________________________________________________
 PERSON 8. SHARED DISPOSITIVE POWER
 2,496,769
 WITH
________________________________________________________________________________
9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 2,496,769

________________________________________________________________________________
10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

 [_]

________________________________________________________________________________
11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

 5.67%

________________________________________________________________________________
12. TYPE OF REPORTING PERSON*

 IA

________________________________________________________________________________
 *SEE INSTRUCTIONS BEFORE FILLING OUT
Item 1(a). Name of Issuer:

 CSK Auto Corporation

 ____________________________________________________________________

Item 1(b). Address of Issuer's Principal Executive Offices:

 645 E Missouri Avenue, Suite 400
 Phoenix, AZ 85012

 ____________________________________________________________________

Item 2(a). Name of Person Filing:

 Friedman, Billings, Ramsey Group, Inc.
 FBR TRS Holdings, Inc.
 FBR Capital Markets Corporation
 FBR Asset Management Holdings Inc.
 FBR Fund Advisers, Inc.

 ____________________________________________________________________

Item 2(b). Address of Principal Business Office, or if None, Residence:

 Friedman, Billings, Ramsey Group, Inc.
 FBR TRS Holdings, Inc.
 FBR Capital Markets Corporation
 FBR Asset Management Holdings Inc.
 FBR Fund Advisers, Inc.
 1001 Nineteenth Street North
 Arlington, VA 22209

 ____________________________________________________________________

Item 2(c). Citizenship:

 Friedman, Billings, Ramsey Group, Inc.
 FBR TRS Holdings, Inc.
 FBR Capital Markets Corporation
 FBR Asset Management Holdings Inc.

 Virginia

 FBR Fund Advisers, Inc.

 Delaware

 ____________________________________________________________________

Item 2(d). Title of Class of Securities:

 Common stock, $.01 par value per share

 ____________________________________________________________________

Item 2(e). CUSIP Number:

 125965103

 ____________________________________________________________________

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. 125965103 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:

 Friedman, Billings, Ramsey Group, Inc. 2,496,769
 FBR TRS Holdings, Inc. 2,496,769
 FBR Capital Markets Corporation 2,496,769
 FBR Asset Management Holdings Inc. 2,496,769
 FBR Fund Advisers, Inc. 2,496,769
 ______________________________________________________________________

 (b) Percent of class:

 Friedman, Billings, Ramsey Group, Inc. 5.67%
 FBR TRS Holdings, Inc. 5.67%
 FBR Capital Markets Corporation 5.67%
 FBR Asset Management Holdings Inc. 5.67%
 FBR Fund Advisers, Inc. 5.67%

 ______________________________________________________________________

 (c) Number of shares as to which such person has:

 (i) Sole power to vote or to direct the vote:

 Friedman, Billings, Ramsey Group, Inc. 0
 FBR TRS Holdings, Inc. 0
 FBR Capital Markets Corporation 0
 FBR Asset Management Holdings Inc. 0
 FBR Fund Advisers, Inc. 0


 (ii) Shared power to vote or to direct the vote:

 Friedman, Billings, Ramsey Group, Inc. 2,496,769
 FBR TRS Holdings, Inc. 2,496,769
 FBR Capital Markets Corporation 2,496,769
 FBR Asset Management Holdings Inc. 2,496,769
 FBR Fund Advisers, Inc. 2,496,769


 (iii) Sole power to dispose or to direct the disposition of:

 Friedman, Billings, Ramsey Group, Inc. 0
 FBR TRS Holdings, Inc. 0
 FBR Capital Markets Corporation 0
 FBR Asset Management Holdings Inc. 0
 FBR Fund Advisers, Inc. 0



 (iv) Shared power to dispose or to direct the disposition of:

 Friedman, Billings, Ramsey Group, Inc. 2,496,769
 FBR TRS Holdings, Inc. 2,496,769
 FBR Capital Markets Corporation 2,496,769
 FBR Asset Management Holdings Inc. 2,496,769
 FBR Fund Advisers, Inc. 2,496,769




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 [ ].

 Not Applicable
 _______________________________________________________________________

Item 6. Ownership of More Than Five Percent on Behalf of Another Person.

 Not Applicable.

 _______________________________________________________________________

Item 7. Identification and Classification of the Subsidiary Which Acquired the
 Security Being Reported on by the Parent Holding Company or Control
 Person.


 FBR Fund Advisers, Inc.
 _______________________________________________________________________

Item 8. Identification and Classification of Members of the Group.

 Not Applicable.

 _______________________________________________________________________

Item 9. Notice of Dissolution of Group.

 Not Applicable.

 ______________________________________________________________________

Item 10. Certifications.


 "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 11, 2008
 ----------------------------------------

 (Date)

 Friedman, Billings, Ramsey Group, Inc.*


 /s/ Ann Marie Pulsch
 ----------------------------------------
 (Signature)

 Ann Marie Pulsch
 Asst. Corporate Secretary
 ----------------------------------------
 (Name/Title)


 FBR TRS Holdings, Inc.*


 /s/ Ann Marie Pulsch
 ----------------------------------------
 (Signature)

 Ann Marie Pulsch
 Asst. Corporate Secretary
 ----------------------------------------
 (Name/Title)


 FBR Capital Markets Corporation*


 /s/ Ann Marie Pulsch
 ----------------------------------------
 (Signature)

 Ann Marie Pulsch
 Asst. Corporate Secretary
 ----------------------------------------
 (Name/Title)


 FBR Asset Management Holdings, Inc.*


 /s/ Ann Marie Pulsch
 ----------------------------------------
 (Signature)

 Ann Marie Pulsch
 Asst. Corporate Secretary
 ----------------------------------------
 (Name/Title)



 FBR Fund Advisers, Inc.*


 /s/ Winsor H. Aylesworth
 ----------------------------------------
 (Signature)

 Winsor H. Aylesworth
 Treasurer and Corporate Secretary
 ----------------------------------------
 (Name/Title)

*The Reporting Persons disclaim beneficial ownership in the shares represented
herein except to the extent of their pecuniary interest therein.

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).

 Exhibit A


 AGREEMENT


 The undersigned agree that this Schedule 13G dated February 11, 2008,
relating to the Common stock, $.01 par value per share, of CSK Auto Corporation
shall be filed on behalf of the undersigned.

FRIEDMAN, BILLINGS, RAMSEY GROUP, INC.*


 /s/ Ann Marie Pulsch
By:___________________________
Name: Ann Marie Pulsch
Title: Asst. Corporate Secretary


FBR TRS HOLDINGS, INC,*


 /s/ Ann Marie Pulsch
By:___________________________________
Name: Ann Marie Pulsch
Title: Asst. Corporate Secretary


FBR CAPITAL MARKETS CORPORATION*


 /s/ Ann Marie Pulsch
By:___________________________________
Name: Ann Marie Pulsch
Title: Asst. Corporate Secretary


FBR ASSET MANAGEMENT HOLDINGS, INC.


 /s/ Ann Marie Pulsch
By:___________________________________
Name: Ann Marie Pulsch
Title: Asst. Corporate Secretary



FBR FUND ADVISERS, INC.*


 /s/ Winsor H. Aylesworth
By:___________________________________
Name: Winsor H. Aylesworth
Title: Treasurer and Corporate Secretary


*The Reporting Persons disclaim beneficial ownership in the shares reported
herein except to the extent of their pecuniary interest therein