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<PAGE> PAGE 2
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<PAGE> PAGE 12
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<PAGE> PAGE 16
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<PAGE> PAGE 19
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<PAGE> PAGE 21
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<PAGE> PAGE 22
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SIGNATURE JOHN J. ARTHUR
TITLE SR V.P. & TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the Short-Term
Investments Co. Prime Portfolio Institutional Class Fund for the six month
period ended February 28, 1995.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 1
<NAME> PRIME PORTFOLIO INSTITUTIONAL CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1995
<PERIOD-END> FEB-28-1995
<INVESTMENTS-AT-COST> 4,523,664,588
<INVESTMENTS-AT-VALUE> 4,523,664,588
<RECEIVABLES> 3,161,198
<ASSETS-OTHER> 1,474,868
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,528,300,654
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 21,477,980
<TOTAL-LIABILITIES> 21,477,980
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4,506,834,727
<SHARES-COMMON-STOCK> 4,506,834,727
<SHARES-COMMON-PRIOR> 4,115,025,404
<ACCUMULATED-NII-CURRENT> 116,935,852
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 4,506,822,674
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 119,188,141
<OTHER-INCOME> 0
<EXPENSES-NET> 2,252,289
<NET-INVESTMENT-INCOME> 116,935,852
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 116,935,852
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 116,935,852
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 20,035,142,828
<NUMBER-OF-SHARES-REDEEMED> 19,648,300,934
<SHARES-REINVESTED> 4,967,429
<NET-CHANGE-IN-ASSETS> 391,809,323
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,303,597
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,290,989
<AVERAGE-NET-ASSETS> 4,256,879,184
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .03
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> .03
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .09
<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 Private Class Fund for the six month
period ended February 28, 1995.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 2
<NAME> PRIME PORTFOLIO PRIVATE CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1995
<PERIOD-END> FEB-28-1995
<INVESTMENTS-AT-COST> 4,523,664,588
<INVESTMENTS-AT-VALUE> 4,523,664,588
<RECEIVABLES> 3,161,198
<ASSETS-OTHER> 1,474,868
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,528,300,654
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 21,477,980
<TOTAL-LIABILITIES> 21,477,980
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4,506,834,727
<SHARES-COMMON-STOCK> 4,506,834,727
<SHARES-COMMON-PRIOR> 4,115,025,404
<ACCUMULATED-NII-CURRENT> 116,935,852
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 4,506,822,674
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 119,188,141
<OTHER-INCOME> 0
<EXPENSES-NET> 2,252,289
<NET-INVESTMENT-INCOME> 116,935,852
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 116,935,852
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 116,935,852
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 20,035,142,828
<NUMBER-OF-SHARES-REDEEMED> 19,648,300,934
<SHARES-REINVESTED> 4,967,429
<NET-CHANGE-IN-ASSETS> 391,809,323
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,303,597
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,290,989
<AVERAGE-NET-ASSETS> 84,924,214
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .03
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> .03
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .39
<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 Class Fund for the six month
period ended February 28, 1995.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 3
<NAME> PRIME PORTFOLIO PERSONAL CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1995
<PERIOD-END> FEB-28-1995
<INVESTMENTS-AT-COST> 4,523,664,588
<INVESTMENTS-AT-VALUE> 4,523,664,588
<RECEIVABLES> 3,161,198
<ASSETS-OTHER> 1,474,868
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,528,300,654
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 21,477,980
<TOTAL-LIABILITIES> 21,477,980
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4,506,834,727
<SHARES-COMMON-STOCK> 4,506,834,727
<SHARES-COMMON-PRIOR> 4,115,025,404
<ACCUMULATED-NII-CURRENT> 116,935,852
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 4,506,822,674
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 119,188,141
<OTHER-INCOME> 0
<EXPENSES-NET> 2,252,289
<NET-INVESTMENT-INCOME> 116,935,852
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 116,935,852
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 116,935,852
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 20,035,142,828
<NUMBER-OF-SHARES-REDEEMED> 19,648,300,934
<SHARES-REINVESTED> 4,967,429
<NET-CHANGE-IN-ASSETS> 391,809,323
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,303,597
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,290,989
<AVERAGE-NET-ASSETS> 72,395,689
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .02
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> .02
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .59
<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 Cash Management Class Fund for the six
month period ended February 28, 1995.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 4
<NAME> PRIME PORTFOLIO CASH MANAGEMENT CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1995
<PERIOD-END> FEB-28-1995
<INVESTMENTS-AT-COST> 4,523,664,588
<INVESTMENTS-AT-VALUE> 4,523,664,588
<RECEIVABLES> 3,161,198
<ASSETS-OTHER> 1,474,868
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 4,528,300,654
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 21,477,980
<TOTAL-LIABILITIES> 21,477,980
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 4,506,834,727
<SHARES-COMMON-STOCK> 4,506,834,727
<SHARES-COMMON-PRIOR> 4,115,025,404
<ACCUMULATED-NII-CURRENT> 116,935,852
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 4,506,822,674
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 119,188,141
<OTHER-INCOME> 0
<EXPENSES-NET> 2,252,289
<NET-INVESTMENT-INCOME> 116,935,852
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 116,935,852
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 116,935,852
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 20,035,142,828
<NUMBER-OF-SHARES-REDEEMED> 19,648,300,934
<SHARES-REINVESTED> 4,967,429
<NET-CHANGE-IN-ASSETS> 391,809,323
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,303,597
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,290,989
<AVERAGE-NET-ASSETS> 3,409,166
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .03
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> .03
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .17
<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 Fund for the six month Period
ended February 28, 1995.
</LEGEND>
<CIK> 0000914638
<NAME> SHORT-TERM INVESTMENTS CO.
<SERIES>
<NUMBER> 5
<NAME> LIQUID ASSETS PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1995
<PERIOD-END> FEB-28-1995
<INVESTMENTS-AT-COST> 1,529,640,711
<INVESTMENTS-AT-VALUE> 1,529,640,711
<RECEIVABLES> 4,483,782
<ASSETS-OTHER> 122,892
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1,534,247,385
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 6,994,138
<TOTAL-LIABILITIES> 6,994,138
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,527,238,770
<SHARES-COMMON-STOCK> 1,527,238,770
<SHARES-COMMON-PRIOR> 1,028,412,003
<ACCUMULATED-NII-CURRENT> 44,249,985
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 1,527,253,247
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 45,329,753
<OTHER-INCOME> 0
<EXPENSES-NET> 1,079,768
<NET-INVESTMENT-INCOME> 44,249,985
<REALIZED-GAINS-CURRENT> 76,673
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 44,326,658
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 44,249,985
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 18,091,692,223
<NUMBER-OF-SHARES-REDEEMED> 17,594,426,531
<SHARES-REINVESTED> 1,561,075
<NET-CHANGE-IN-ASSETS> 498,826,767
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 827,794
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,079,768
<AVERAGE-NET-ASSETS> 1,658,088,721
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .03
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> .03
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .13
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
