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 June 30, 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
                            August 8, 2008


                                       49