PAGE  1
000 B000000 12/31/2002
000 C000000 0000275694
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008 B000001 A
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008 D010001 SPRINGFIELD
008 D020001 MA
008 D030001 01115
012 A000001 SHAREHOLDER FINANCIAL SERVICES, INC.
012 B000001 84-1817
012 C010001 DENVER
012 C020001 CO
012 C030001 80231
013 A000001 DELOITTE & TOUCHE LLP
013 B010001 NEW YORK
013 B020001 NY
013 B030001 10281
013 B040001 1414
015 A000001 CITIBANK, N.A.
015 B000001 C
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      PAGE  2
015 C020001 NY
015 C030001 10043
015 E010001 X
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018  000000 Y
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019 C000000 CIPIINVEST
020 A000001 ALLEN & COMPANY INCORPORATED
020 B000001 13-6176976
020 C000001      5
020 A000002 CIBC OPPENHEIMER
020 B000002 13-2798343
020 C000002      3
020 A000003 SALOMON SMITH BARNEY HOLD INC.
020 B000003 11-2418191
020 C000003      2
020 A000004 GOLDMAN, SACHS & CO.
020 B000004 13-5108880
020 C000004      1
020 A000005 DUNLEVY & CO.
020 B000005 13-2919975
020 C000005      1
020 A000006 FIRST BOSTON CORPORATION
020 B000006 13-5659485
020 C000006      1
020 A000007 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
020 B000007 13-5674085
020 C000007      0
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022 A000005 FIRST BOSTON CORPORATION
      PAGE  3
022 B000005 13-5659485
022 C000005      8559
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022 A000006 FIRST CHICAGO
022 B000006 36-3595942
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022 A000008 BNP PARIBAS
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022 A000009 GRANCHESTER
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      PAGE  4
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      PAGE  5
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      PAGE  6
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      PAGE  7
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      PAGE  8
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      PAGE  9
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088 D000000 N
SIGNATURE   CHARLES C. MCCOBB, JR.
TITLE       V.P. AND C.F.O.

                           EXHIBIT INDEX TO FORM N-SAR
                        OF MASSMUTUAL CORPORATE INVESTORS
                        FOR YEAR ENDED DECEMBER 31, 2002


EXHIBIT NO.                   DESCRIPTION

77B              ACCOUNTANT'S REPORT ON INTERNAL CONTROL
77E              LEGAL PROCEEDINGS
77Q(2)           INFORMATION CALLED FOR BY THE INSTRUCTIONS TO SUB-ITEM 77Q(2)
77Q(3)           INFORMATION CALLED FOR BY THE INSTRUCTIONS TO SUB-ITEM 77Q(3)