UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 CHIMERA INVESTMENT CORP (Name of Issuer) COMMON STOCK (Title of Class of Securities) 16934Q109 (CUSIP NUMBER) 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) Check the following box is a fee is being paid with this statement [ ]. (A fee is not required only if the filing person: (1) has a previous statement on file reporting beneficial ownership of more than five percent of the class of securities described in item 1; and (2) has filed no amendment subsequent thereto reporting beneficial ownership of five percent or less of such class.) (See Rule 13d-7). *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 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provision of the Act (however, see the Notes). CUSIP NO. 16934Q109 1. NAME OF REPORTING PERSON & I.R.S. IDENTIFICATION NO. Reed Conner & Birdwell, LLC ("RCB") I.R.S. 95-4833644 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] N/A (b) [ ] 3. SEC USE ONLY 4. CITIZENSHIP OF PLACE OR ORGANIZATION Delaware NUMBER OF 5. SOLE VOTING POWER 1,945,738 SHARES BENEFICIALLY 6. SHARED VOTING POWER 0 OWNED BY EACH 7. SOLE DISPOSITIVE POWER 1,945,738 REPORTING PERSON WITH 8. SHARED DISPOSITIVE POWER 0 9. AGGREGATE AMOUNT BENEFICALLY OWNED BY EACH REPORTING PERSON 1,945,738 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 5.27% 12. TYPE OF REPORTING PERSON* IA Cusip # 16934Q109 Item 1: Reporting Person - Donn B. Conner Item 4: U.S.A. Item 5: 1,945,738 Item 6: None Item 7: 1,945,738 Item 8: None Item 9: 1,945,738 Item 11: 5.27% Item 12: IN Cusip # 16934Q109 Item 1: Reporting Person - Jeff Bronchick Item 4: U.S.A. Item 5: 1,945,738 Item 6: None Item 7: 1,945,738 Item 8: None Item 9: 1,945,738 Item 11: 5.27% Item 12: IN Item 1. (a) Name of Issuer: CHIMERA INVESTMENT CORP (b) Address of Issuer's Principal Executive Offices 1211 AVENUE OF THE AMERICAS SUITE 2902 NEW YORK, NY 10036 Item 2. (a) Name of Person Filing: Reed Conner & Birdwell, LLC (b) Address of Principal Office: 11111 Santa Monica Boulevard Suite 1700 Los Angeles, CA 90025 (c) Citizenship: Delaware LLC (d) Title and Class of Securities: COMMON STOCK (e) CUSIP Number: 16934Q109 Item 3. If this statement if filed pursuant to 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: (e) [X] An investment adviser in accordance with 240.13d- 1(b)(1)(ii)(E) 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: Reed Conner & Birdwell 1,945,738 (b) Percent of Class: 5.27% (c) Number of Shares as to which person has: (i) Sole power to vote or to direct the vote 1,945,738 (ii) Shared power to vote or to direct the vote 0 (iii) Sole power to dispose or to direct the disposition of 1,945,738 (iv) Sole power to dispose or to direct the disposition of 0 Item 5. Ownership of Five Percent or Less of a Class N/A Item 6. Ownership of More than Five Percent on Behalf of Another Person. N/A Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company N/A Item 8. Identification and Classification of Members of the Group N/A Item 9. Notice of Dissolution of Group N/A Item 10. Certification By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired 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. Dated: April 2, 2008 Reed Conner & Birdwell, LLC. By: /S/ Donn B. Conner - ---------------------------------- Donn B. Conner, President & CEO By: /S/ Jeffrey Bronchick - ---------------------------------- Jeffrey Bronchick, CIO JOINT FILING AGREEMENT PURSUANT TO RULE 13D-1(F)(1) This agreement is made pursuant to Rule 13d-1(f)(1) under the Securities Exchange Act of 1934 (the "Act") by and among the parties listed below, each referred to herein as a "Joint Filer." The Joint Filers agree that a statement of beneficial ownership as required by Section 13(d) of the Act and the Rules thereunder may be filed on each of their behalf on Schedule 13D or Schedule 13G, as appropriate, and that said joint filing may thereafter be amended by further joint filings. The Joint Filers states that they each satisfy the requirements for making a joint filing under Rule 13d-1. Dated: April 2, 2008 By: /S/ Donn B. Conner - ----------------------------------- Donn B. Conner, President & CEO By: /S/ Jeffrey Bronchick - ----------------------------------- Jeffrey Bronchick, CIO