<PAGE> PAGE 1
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<PAGE> PAGE 2
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<PAGE> PAGE 3
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<PAGE> PAGE 4
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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 12
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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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SIGNATURE DANA R. SUTTON
TITLE V.P. & TREASURER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
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<NAME> SHORT TERM INVESTMENTS TRUST
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
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<NAME> SHORT TERM INVESTMENTS TRUST
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<NUMBER> 2
<NAME> AIM STIT TREASURY FUND, PRIVATE CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-2000
<PERIOD-END> FEB-29-2000
<INVESTMENTS-AT-COST> 5354967123
<INVESTMENTS-AT-VALUE> 5354967123
<RECEIVABLES> 8834769
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<TOTAL-ASSETS> 5364079396
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<OVERDISTRIBUTION-GAINS> 0
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<INTEREST-INCOME> 143990882
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<EXPENSES-NET> (5527867)
<NET-INVESTMENT-INCOME> 138463015
<REALIZED-GAINS-CURRENT> 21543
<APPREC-INCREASE-CURRENT> 0
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<DISTRIBUTIONS-OF-INCOME> (138463015)
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<NUMBER-OF-SHARES-SOLD> 14715427553
<NUMBER-OF-SHARES-REDEEMED> (14669291120)
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<NET-CHANGE-IN-ASSETS> 87514104
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<GROSS-EXPENSE> 6839134
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<PER-SHARE-NAV-BEGIN> 1.00
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<PER-SHARE-DIVIDEND> (0.02)
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<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.40
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Treasury Fund, February 29, 2000, semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 2
<NAME> AIM STIT TREASURY FUND, PERSONAL CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-2000
<PERIOD-END> FEB-29-2000
<INVESTMENTS-AT-COST> 5354967123
<INVESTMENTS-AT-VALUE> 5354967123
<RECEIVABLES> 8834769
<ASSETS-OTHER> 277504
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<TOTAL-ASSETS> 5364079396
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<OTHER-ITEMS-LIABILITIES> 72818186
<TOTAL-LIABILITIES> 72818186
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<PAID-IN-CAPITAL-COMMON> 5290883548
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<SHARES-COMMON-PRIOR> 5203390987
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<ACCUMULATED-NET-GAINS> 377662
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 5291261210
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 143990882
<OTHER-INCOME> 0
<EXPENSES-NET> (5527867)
<NET-INVESTMENT-INCOME> 138463015
<REALIZED-GAINS-CURRENT> 21543
<APPREC-INCREASE-CURRENT> 0
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<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (138463015)
<DISTRIBUTIONS-OF-GAINS> 0
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<NUMBER-OF-SHARES-SOLD> 14715427553
<NUMBER-OF-SHARES-REDEEMED> (14669291120)
<SHARES-REINVESTED> 41356128
<NET-CHANGE-IN-ASSETS> 87514104
<ACCUMULATED-NII-PRIOR> 0
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<OVERDISTRIB-NII-PRIOR> 0
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<GROSS-EXPENSE> 6839134
<AVERAGE-NET-ASSETS> 286888943
<PER-SHARE-NAV-BEGIN> 1.00
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<PER-SHARE-DIVIDEND> (0.02)
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<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.60
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Treasury Fund, February 29, 2000, semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 2
<NAME> AIM STIT TREASURY FUND, CASH MANAGEMENT CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-2000
<PERIOD-END> FEB-29-2000
<INVESTMENTS-AT-COST> 5354967123
<INVESTMENTS-AT-VALUE> 5354967123
<RECEIVABLES> 8834769
<ASSETS-OTHER> 277504
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<TOTAL-ASSETS> 5364079396
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<SHARES-COMMON-PRIOR> 5203390987
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<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 377662
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 5291261210
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 143990882
<OTHER-INCOME> 0
<EXPENSES-NET> (5527867)
<NET-INVESTMENT-INCOME> 138463015
<REALIZED-GAINS-CURRENT> 21543
<APPREC-INCREASE-CURRENT> 0
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<EQUALIZATION> 0
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<OVERDISTRIB-NII-PRIOR> 0
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<GROSS-EXPENSE> 6839134
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<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.03
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<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.18
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Treasury Fund, February 29, 2000, semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 2
<NAME> AIM STIT TREASURY FUND, RESOURCE CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-2000
<PERIOD-END> FEB-29-2000
<INVESTMENTS-AT-COST> 5354967123
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<RECEIVABLES> 8834769
<ASSETS-OTHER> 277504
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<TOTAL-ASSETS> 5364079396
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<SHARES-COMMON-PRIOR> 5203390987
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<OVERDISTRIBUTION-GAINS> 0
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<NET-ASSETS> 5291261210
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<EXPENSES-NET> (5527867)
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<NUMBER-OF-SHARES-SOLD> 14715427553
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<PER-SHARE-NAV-BEGIN> 1.00
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<PER-SHARE-DIVIDEND> (0.03)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.26
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Treasury Fund, February 29, 2000, semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 2
<NAME> AIM STIT TREASURY FUND, RESERVE CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-2000
<PERIOD-END> FEB-29-2000
<INVESTMENTS-AT-COST> 5354967123
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<RECEIVABLES> 8834769
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<ACCUMULATED-NET-GAINS> 377662
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<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 5291261210
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<EXPENSES-NET> (5527867)
<NET-INVESTMENT-INCOME> 138463015
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<NUMBER-OF-SHARES-SOLD> 14715427553
<NUMBER-OF-SHARES-REDEEMED> (14669291120)
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<NET-CHANGE-IN-ASSETS> 87514104
<ACCUMULATED-NII-PRIOR> 0
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<GROSS-EXPENSE> 6839134
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<PER-SHARE-NAV-BEGIN> 1.00
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<PER-SHARE-DIVIDEND> (0.02)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.90
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Tax Advantage Portfolio Fund, February 29, 2000,
semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 7
<NAME> AIM STIT TAX ADVANTAGE PORTFOLIO, INSTITUTIONAL CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-2000
<PERIOD-END> FEB-29-2000
<INVESTMENTS-AT-COST> 100442321
<INVESTMENTS-AT-VALUE> 100442321
<RECEIVABLES> 0
<ASSETS-OTHER> 67625
<OTHER-ITEMS-ASSETS> 4495750
<TOTAL-ASSETS> 105005696
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<OTHER-ITEMS-LIABILITIES> 493002
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<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 104530491
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<SHARES-COMMON-PRIOR> 133861259
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<ACCUMULATED-NET-GAINS> (17797)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 104512694
<DIVIDEND-INCOME> 0
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<EXPENSES-NET> (129417)
<NET-INVESTMENT-INCOME> 2921782
<REALIZED-GAINS-CURRENT> (49828)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 2871954
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (2921782)
<DISTRIBUTIONS-OF-GAINS> 0
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<NUMBER-OF-SHARES-REDEEMED> (1020791386)
<SHARES-REINVESTED> 722111
<NET-CHANGE-IN-ASSETS> (29380596)
<ACCUMULATED-NII-PRIOR> 0
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<OVERDISTRIB-NII-PRIOR> 0
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<GROSS-EXPENSE> 341457
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<PER-SHARE-NAV-BEGIN> 1.00
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<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.11
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Tax Advantage Portfolio Fund, February 29, 2000,
semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 7
<NAME> AIM STIT TAX ADVANTAGE PORTFOLIO, PRIVATE CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
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<PERIOD-END> FEB-29-2000
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<NUMBER-OF-SHARES-REDEEMED> (1020791386)
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<NET-CHANGE-IN-ASSETS> (29380596)
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<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.36
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Tax Advantage Portfolio Fund, February 29, 2000,
semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 7
<NAME> AIM STIT TAX ADVANTAGE PORTFOLIO,
CASH MANAGEMENT CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-2000
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Tax Advantage Portfolio Fund, February 29, 2000,
semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 7
<NAME> AIM STIT TAX ADVANTAGE PORTFOLIO,
RESOURCE CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-2000
<PERIOD-END> FEB-29-2000
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Government & Agency Portfolio, February 29, 2000,
semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 8
<NAME> AIM STIT GOVERNMENT & AGENCY PORTFOLIO,
INSTITUTIONAL CLASS
<S> <C>
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Government & Agency Portfolio, February 29, 2000,
semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 8
<NAME> AIM STIT GOVERNMENT & AGENCY PORTFOLIO,
PRIVATE CLASS
<S> <C>
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Government & Agency Portfolio, February 29, 2000,
semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 8
<NAME> AIM STIT GOVERNMENT & AGENCY PORTFOLIO,
PERSONAL CLASS
<S> <C>
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Government & Agency Portfolio, February 29, 2000,
semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 8
<NAME> AIM STIT GOVERNMENT & AGENCY PORTFOLIO,
CASH MANAGEMENT CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
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</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Government & Agency Portfolio, February 29, 2000,
semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 8
<NAME> AIM STIT GOVERNMENT & AGENCY PORTFOLIO,
RESERVE CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information for the
AIM STIT Government & Agency Portfolio, February 29, 2000,
semi-annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENTS TRUST
<SERIES>
<NUMBER> 8
<NAME> AIM STIT GOVERNMENT & AGENCY PORTFOLIO,
RESOURCE CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
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