Exhibit 32.2

                         CHIMERA INVESTMENT CORPORATION
                           1211 AVENUE OF THE AMERICAS
                                   SUITE 2902
                            NEW YORK, NEW YORK 10036


                                  CERTIFICATION

                         PURSUANT TO SECTION 906 OF THE

               SARBANES-OXLEY ACT OF 2002, 10 U.S.C. SECTION 1350

         In connection with the quarterly report on Form 10-Q of Chimera
Investment Corporation (the "Company") for the period ended March 31, 2008 to be
filed, I, A. Alexandra Denahan, Chief Financial Officer of the Company, certify,
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section
1350, that:

    1.   The Report fully complies with the  requirements of Section 13(a)
         or 15(d) of the Securities Exchange Act of 1934; and

    2.   The information contained in the Report fairly presents, in all
         material respects, the financial condition and results of operations of
         the Company at the dates of, and for the periods covered by, the
         Report.

It is not intended that this statement be deemed to be filed for purposes of the
Securities Exchange Act of 1934.


                             /s/ A. Alexandra Denahan
                             ------------------------
                             A. Alexandra Denahan
                             Chief Financial Officer
                             May 14, 2008

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