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<PAGE> PAGE 2
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<PAGE> PAGE 5
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<PAGE> PAGE 6
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<PAGE> PAGE 7
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<PAGE> PAGE 9
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<PAGE> PAGE 10
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<PAGE> PAGE 11
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<PAGE> PAGE 13
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<PAGE> PAGE 14
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<PAGE> PAGE 15
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<PAGE> PAGE 16
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<PAGE> PAGE 17
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<PAGE> PAGE 18
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<PAGE> PAGE 20
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<PAGE> PAGE 21
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<PAGE> PAGE 22
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<PAGE> PAGE 23
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<PAGE> PAGE 24
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<PAGE> PAGE 25
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<PAGE> PAGE 26
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<PAGE> PAGE 27
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<PAGE> PAGE 28
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<PAGE> PAGE 29
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<PAGE> PAGE 30
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<PAGE> PAGE 31
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<PAGE> PAGE 32
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<PAGE> PAGE 33
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<PAGE> PAGE 34
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<PAGE> PAGE 35
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<PAGE> PAGE 36
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<PAGE> PAGE 37
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<PAGE> PAGE 38
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<PAGE> PAGE 39
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<PAGE> PAGE 40
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<PAGE> PAGE 41
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<PAGE> PAGE 42
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<PAGE> PAGE 43
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SIGNATURE JOHN J. ARTHUR
TITLE SR. V.P. & TREASRUER
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the Short-Term
Investments Co. Prime Portfolio Institutional Class for the semi-annual
period ended February 28, 1997.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 001
<NAME> PRIME PORTFOLIO INSTITUTIONAL CLASS
<S> <C>
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<INVESTMENTS-AT-COST> 7264879819
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<NUMBER-OF-SHARES-SOLD> 51470497581
<NUMBER-OF-SHARES-REDEEMED> (50418689994)
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the Short-Term
Investments Co. Prime Portfolio Private Investment Class for the semi-annual
period ended February 28, 1997.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 002
<NAME> PRIME PORTFOLIO PRIVATE CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
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<PERIOD-END> FEB-28-1997
<INVESTMENTS-AT-COST> 7264879819
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<EXPENSES-NET> (3754010)
<NET-INVESTMENT-INCOME> 183808088
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<GROSS-EXPENSE> 4181918
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<PER-SHARE-NAV-BEGIN> 1.00
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<PER-SHARE-DIVIDEND> (0.02)
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<EXPENSE-RATIO> 0.38
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the Short-Term
Investments Co. Prime Portfolio Personal Investment Class for the semi-annual
period ended February 28, 1997.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 003
<NAME> PRIME PORTFOLIO PERSONAL CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1997
<PERIOD-END> FEB-28-1997
<INVESTMENTS-AT-COST> 7264879819
<INVESTMENTS-AT-VALUE> 7264879819
<RECEIVABLES> 811599
<ASSETS-OTHER> 1281640
<OTHER-ITEMS-ASSETS> 0
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<OTHER-INCOME> 0
<EXPENSES-NET> (3754010)
<NET-INVESTMENT-INCOME> 183808088
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<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.58
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the Short-Term
Investments Co. Prime Portfolio Cash Management Class for the semi-annual
period ended February 28, 1997.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 004
<NAME> PRIME PORTFOLIO CASH MANAGEMENT CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1997
<PERIOD-END> FEB-28-1997
<INVESTMENTS-AT-COST> 7264879819
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<RECEIVABLES> 811599
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<GROSS-EXPENSE> 4181918
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<PER-SHARE-NAV-BEGIN> 1.00
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<PER-SHARE-NAV-END> 1.00
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<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the Short-Term
Investments Co. Liquid Assets Portfolio Institutional Class for the semi-
annual period ended February 28, 1997.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 005
<NAME> LIQUID ASSETS PORTFOLIO INSTITUTIONAL CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
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<PERIOD-END> FEB-28-1997
<INVESTMENTS-AT-COST> 2779135215
<INVESTMENTS-AT-VALUE> 2779135215
<RECEIVABLES> 3082226
<ASSETS-OTHER> 113873
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2782331314
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 36527945
<TOTAL-LIABILITIES> 36527945
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2747410171
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<SHARES-COMMON-PRIOR> 2088677519
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<EXPENSES-NET> (822471)
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<APPREC-INCREASE-CURRENT> 0
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<DISTRIBUTIONS-OF-INCOME> (64315502)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 38923611736
<NUMBER-OF-SHARES-REDEEMED> (38273338651)
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<ACCUMULATED-NII-PRIOR> 0
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<PER-SHARE-NAV-END> 1.00
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the Short-Term
Investments Co. Liquid Assets Portfolio Private Investment Class for the
semi-annual period ended February 28, 1997.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 006
<NAME> LIQUID ASSETS PORTFOLIO PRIVATE INVESTMENT CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
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<PERIOD-END> FEB-28-1997
<INVESTMENTS-AT-COST> 2779135215
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<RECEIVABLES> 3082226
<ASSETS-OTHER> 113873
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<SENIOR-LONG-TERM-DEBT> 0
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<TOTAL-LIABILITIES> 36527945
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<ACCUMULATED-NET-GAINS> (1606802)
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<NUMBER-OF-SHARES-REDEEMED> (38273338651)
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<ACCUMULATED-NII-PRIOR> 0
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<PER-SHARE-NAV-BEGIN> 1.00
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<EXPENSE-RATIO> 0.36
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the Short-Term
Investments Co. Liquid Assets Portfolio Cash Management Class for the
semi-annual period ended February 28, 1997.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 007
<NAME> LIQUID ASSETS PORTFOLIO CASH MANAGEMENT CLASS
<S> <C>
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<PERIOD-END> FEB-28-1997
<INVESTMENTS-AT-COST> 2779135215
<INVESTMENTS-AT-VALUE> 2779135215
<RECEIVABLES> 3082226
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<EXPENSE-RATIO> 0.14
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the Short-Term
Investments Co. Prime Portfolio Resource Class for the semi-annual period
ended February 28, 1997.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 008
<NAME> PRIME PORTFOLIO RESOURCE CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1997
<PERIOD-END> FEB-28-1997
<INVESTMENTS-AT-COST> 7264879819
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<NET-CHANGE-FROM-OPS> 183810243
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (183808088)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 51470497581
<NUMBER-OF-SHARES-REDEEMED> (50418689994)
<SHARES-REINVESTED> 27266433
<NET-CHANGE-IN-ASSETS> 1079076175
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (8493)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1946438
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 4181918
<AVERAGE-NET-ASSETS> 111270724
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.03
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> (0.03)
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<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.24
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the Short-Term
Investments Co. Liquid Assets Portfolio MSTC Cash Reserves Class for the
semi-annual period ended February 28, 1997.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 009
<NAME> LIQUID ASSETS PORTFOLIO MSTC CASH RESERVES CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1997
<PERIOD-END> FEB-28-1997
<INVESTMENTS-AT-COST> 2779135215
<INVESTMENTS-AT-VALUE> 2779135215
<RECEIVABLES> 3082226
<ASSETS-OTHER> 113873
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2782331314
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 36527945
<TOTAL-LIABILITIES> 36527945
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2747410171
<SHARES-COMMON-STOCK> 2747410171
<SHARES-COMMON-PRIOR> 2088677519
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (1606802)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 2745803369
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 65137973
<OTHER-INCOME> 0
<EXPENSES-NET> (822471)
<NET-INVESTMENT-INCOME> 64315502
<REALIZED-GAINS-CURRENT> 126395
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 64441897
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (64315502)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 38923611736
<NUMBER-OF-SHARES-REDEEMED> (38273338651)
<SHARES-REINVESTED> 8459567
<NET-CHANGE-IN-ASSETS> 658859047
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (1733197)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1804856
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2340417
<AVERAGE-NET-ASSETS> 5655344
<PER-SHARE-NAV-BEGIN> 1.00
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<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.26
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
