<PAGE> PAGE 1
000 A000000 05/31/95
000 C000000 0000913604
000 D000000 N
000 E000000 NF
000 F000000 Y
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000 H000000 N
000 I000000 3.0.a
000 J000000 A
001 A000000 INSTITUTIONAL SERIES TRUST
001 B000000 811-8080
001 C000000 2127131074
002 A000000 1285 AVENUE OF THE AMERICAS
002 B000000 NEW YORK,
002 C000000 NY
002 D010000 10019
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 1
007 C010100 1
007 C020100 INSTITUTIONAL SERIES TRUST
007 C030100 N
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
020 C000001 0
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020 C000003 0
020 C000004 0
020 C000005 0
020 C000006 0
020 C000007 0
020 C000008 0
020 C000009 0
020 C000010 0
021 000000 0
022 A000001 MORGAN STANLEY
022 B000001 13-2655998
022 C000001 269438
022 D000001 9657
022 A000002 CARROLL MCENTEE
022 B000002 13-2650272
<PAGE> PAGE 2
022 C000002 103761
022 D000002 0
022 A000003 BEAR STEARNS
022 B000003 13-4946705
022 C000003 5230
022 D000003 25790
022 A000004 SMITH BARNEY
022 B000004 13-1912900
022 C000004 0
022 D000004 18149
022 A000005 CITIBANK
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022 C000005 10092
022 D000005 1226
022 A000006 GX CLARK & CO.
022 B000006 13-2929143
022 C000006 7905
022 D000006 3117
022 A000007 NOMURA SECURITIES
022 B000007 13-2642206
022 C000007 0
022 D000007 10924
022 A000008 GOLDMAN SACHS
[ARTICLE] 6
[SERIES]
[NUMBER] 101
[NAME] INSTITUTIONAL SERIES TRUST
<TABLE>
<S> <C>
[PERIOD-TYPE] 6-MOS
[FISCAL-YEAR-END] NOV-30-1995
[PERIOD-END] MAY-31-1995
[INVESTMENTS-AT-COST] 5,160,507
[INVESTMENTS-AT-VALUE] 5,184,747
[RECEIVABLES] 77,331
[ASSETS-OTHER] 185,310
[OTHER-ITEMS-ASSETS] 0
[TOTAL-ASSETS] 5,447,388
[PAYABLE-FOR-SECURITIES] 0
[SENIOR-LONG-TERM-DEBT] 0
[OTHER-ITEMS-LIABILITIES] 88,737
[TOTAL-LIABILITIES] 88,737
[SENIOR-EQUITY] 0
[PAID-IN-CAPITAL-COMMON] 7,319,226
[SHARES-COMMON-STOCK] 452,330
[SHARES-COMMON-PRIOR] 4,403,724
[ACCUMULATED-NII-CURRENT] 0
[OVERDISTRIBUTION-NII] 0
[ACCUMULATED-NET-GAINS] (1,984,813)
[OVERDISTRIBUTION-GAINS] 0
[ACCUM-APPREC-OR-DEPREC] 24,238
[NET-ASSETS] 5,358,651
[DIVIDEND-INCOME] 0
[INTEREST-INCOME] 695,504
[OTHER-INCOME] 0
[EXPENSES-NET] 71,212
[NET-INVESTMENT-INCOME] 624,292
[REALIZED-GAINS-CURRENT] (1,161,648)
[APPREC-INCREASE-CURRENT] 923,129
[NET-CHANGE-FROM-OPS] 385,774
[EQUALIZATION] 0
[DISTRIBUTIONS-OF-INCOME] (562,949)
[DISTRIBUTIONS-OF-GAINS] 0
[DISTRIBUTIONS-OTHER] 0
[NUMBER-OF-SHARES-SOLD] 1,429,707
[NUMBER-OF-SHARES-REDEEMED] 60,653,923
[SHARES-REINVESTED] 301,830
[NET-CHANGE-IN-ASSETS] (59,099,561)
[ACCUMULATED-NII-PRIOR] 0
[ACCUMULATED-GAINS-PRIOR] 0
[OVERDISTRIB-NII-PRIOR] 0
[OVERDIST-NET-GAINS-PRIOR] 0
[GROSS-ADVISORY-FEES] 50,628
[INTEREST-EXPENSE] 0
[GROSS-EXPENSE] 177,577
[AVERAGE-NET-ASSETS] 19,844,363
[PER-SHARE-NAV-BEGIN] 11.81
[PER-SHARE-NII] .34
[PER-SHARE-GAIN-APPREC] .04
[PER-SHARE-DIVIDEND] (.34)
[PER-SHARE-DISTRIBUTIONS] 0
[RETURNS-OF-CAPITAL] 0
[PER-SHARE-NAV-END] 11.85
[EXPENSE-RATIO] .65
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
[ARTICLE] 6
[CIK] 0000913604
[NAME]
[SERIES]
[NUMBER] 102
[NAME] INSTITUTIONAL SERIES TRUST
<TABLE>
<S> <C>
[PERIOD-TYPE] 6-MOS
[FISCAL-YEAR-END] NOV-30-1995
[PERIOD-END] MAY-31-1995
[INVESTMENTS-AT-COST] 50,330
[INVESTMENTS-AT-VALUE] 50,566
[RECEIVABLES] 754
[ASSETS-OTHER] 1,807
[OTHER-ITEMS-ASSETS] 0
[TOTAL-ASSETS] 53,127
[PAYABLE-FOR-SECURITIES] 0
[SENIOR-LONG-TERM-DEBT] 0
[OTHER-ITEMS-LIABILITIES] 865
[TOTAL-LIABILITIES] 865
[SENIOR-EQUITY] 0
[PAID-IN-CAPITAL-COMMON] 71,383
[SHARES-COMMON-STOCK] 4,411
[SHARES-COMMON-PRIOR] 1,111,688
[ACCUMULATED-NII-CURRENT] 0
[OVERDISTRIBUTION-NII] 0
[ACCUMULATED-NET-GAINS] (19,358)
[OVERDISTRIBUTION-GAINS] 0
[ACCUM-APPREC-OR-DEPREC] 236
[NET-ASSETS] 52,262
[DIVIDEND-INCOME] 0
[INTEREST-INCOME] 6,783
[OTHER-INCOME] 0
[EXPENSES-NET] 3,663
[NET-INVESTMENT-INCOME] 3,121
[REALIZED-GAINS-CURRENT] (11,329)
[APPREC-INCREASE-CURRENT] 9,003
[NET-CHANGE-FROM-OPS] 794
[EQUALIZATION] 0
[DISTRIBUTIONS-OF-INCOME] (64,464)
[DISTRIBUTIONS-OF-GAINS] 0
[DISTRIBUTIONS-OTHER] 0
[NUMBER-OF-SHARES-SOLD] 13,944
[NUMBER-OF-SHARES-REDEEMED] 591,547
[SHARES-REINVESTED] 2,944
[NET-CHANGE-IN-ASSETS] (638,329)
[ACCUMULATED-NII-PRIOR] 0
[ACCUMULATED-GAINS-PRIOR] 0
[OVERDISTRIB-NII-PRIOR] 0
[OVERDIST-NET-GAINS-PRIOR] 0
[GROSS-ADVISORY-FEES] 494
[INTEREST-EXPENSE] 0
[GROSS-EXPENSE] 1,732
[AVERAGE-NET-ASSETS] 2,376,703
[PER-SHARE-NAV-BEGIN] 11.81
[PER-SHARE-NII] .32
[PER-SHARE-GAIN-APPREC] .04
[PER-SHARE-DIVIDEND] (.32)
[PER-SHARE-DISTRIBUTIONS] 0
[RETURNS-OF-CAPITAL] 0
[PER-SHARE-NAV-END] 11.85
[EXPENSE-RATIO] .90
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
