<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 8
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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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<PAGE> PAGE 18
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SIGNATURE DANA R. SUTTON
TITLE VP & TREASURER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Treasury Portfolio Institutional Shares February 28,
1999 annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
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<NUMBER> 2
<NAME> TREASURY PORTFOLIO INSTITUTIONAL SHARES
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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 from the Short Term
Investment Trust Treasury Portfolio Private Shares February 28,
1999 annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 2
<NAME> TREASURY PORTFOLIO PRIVATE SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1999
<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 5652266729
<INVESTMENTS-AT-VALUE> 5652266729
<RECEIVABLES> 18816180
<ASSETS-OTHER> 269995
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 5671352904
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 138210159
<TOTAL-LIABILITIES> 138210159
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 5532915517
<SHARES-COMMON-STOCK> 5532915517
<SHARES-COMMON-PRIOR> 5143411553
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 227228
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 5533142745
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 137672982
<OTHER-INCOME> 0
<EXPENSES-NET> (4675052)
<NET-INVESTMENT-INCOME> 132997930
<REALIZED-GAINS-CURRENT> 104590
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 133102520
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (132997930)
<DISTRIBUTIONS-OF-GAINS> (699973)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 19113118089
<NUMBER-OF-SHARES-REDEEMED> (18775136517)
<SHARES-REINVESTED> 51522392
<NET-CHANGE-IN-ASSETS> 388908581
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 822611
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1585583
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5730554
<AVERAGE-NET-ASSETS> 362316347
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> (0.02)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.39
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Treasury Portfolio Personal Shares February 28,
1999 annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 2
<NAME> TREASURY PORTFOLIO PERSONAL SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1999
<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 5652266729
<INVESTMENTS-AT-VALUE> 5652266729
<RECEIVABLES> 18816180
<ASSETS-OTHER> 269995
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 5671352904
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 138210159
<TOTAL-LIABILITIES> 138210159
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 5532915517
<SHARES-COMMON-STOCK> 5532915517
<SHARES-COMMON-PRIOR> 5143411553
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 227228
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 5533142745
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 137672982
<OTHER-INCOME> 0
<EXPENSES-NET> (4675052)
<NET-INVESTMENT-INCOME> 132997930
<REALIZED-GAINS-CURRENT> 104590
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 133102520
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (132997930)
<DISTRIBUTIONS-OF-GAINS> (699973)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 19113118089
<NUMBER-OF-SHARES-REDEEMED> (18775136517)
<SHARES-REINVESTED> 51522392
<NET-CHANGE-IN-ASSETS> 388908581
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 822611
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1585583
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5730554
<AVERAGE-NET-ASSETS> 412314774
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> (0.02)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.59
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Treasury Portfolio Cash Management Shares February 28,
1999 annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 2
<NAME> TREASURY PORTFOLIO CASH MANAGEMENT SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1999
<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 5652266729
<INVESTMENTS-AT-VALUE> 5652266729
<RECEIVABLES> 18816180
<ASSETS-OTHER> 269995
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 5671352904
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 138210159
<TOTAL-LIABILITIES> 138210159
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 5532915517
<SHARES-COMMON-STOCK> 5532915517
<SHARES-COMMON-PRIOR> 5143411553
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 227228
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 5533142745
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 137672982
<OTHER-INCOME> 0
<EXPENSES-NET> (4675052)
<NET-INVESTMENT-INCOME> 132997930
<REALIZED-GAINS-CURRENT> 104590
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 133102520
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (132997930)
<DISTRIBUTIONS-OF-GAINS> (699973)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 19113118089
<NUMBER-OF-SHARES-REDEEMED> (18775136517)
<SHARES-REINVESTED> 51522392
<NET-CHANGE-IN-ASSETS> 388908581
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 822611
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1585583
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5730554
<AVERAGE-NET-ASSETS> 1087027497
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> (0.02)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.17
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Treasury Portfolio Resource Shares February 28,
1999 annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 2
<NAME> TREASURY PORTFOLIO RESOURCE SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1999
<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 5652266729
<INVESTMENTS-AT-VALUE> 5652266729
<RECEIVABLES> 18816180
<ASSETS-OTHER> 269995
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 5671352904
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 138210159
<TOTAL-LIABILITIES> 138210159
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 5532915517
<SHARES-COMMON-STOCK> 5532915517
<SHARES-COMMON-PRIOR> 5143411553
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 227228
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 5533142745
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 137672982
<OTHER-INCOME> 0
<EXPENSES-NET> (4675052)
<NET-INVESTMENT-INCOME> 132997930
<REALIZED-GAINS-CURRENT> 104590
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 133102520
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (132997930)
<DISTRIBUTIONS-OF-GAINS> (699973)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 19113118089
<NUMBER-OF-SHARES-REDEEMED> (18775136517)
<SHARES-REINVESTED> 51522392
<NET-CHANGE-IN-ASSETS> 388908581
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 822611
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1585583
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5730554
<AVERAGE-NET-ASSETS> 389032939
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> (0.02)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.25
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Treasury Portfolio Reserve Shares February 28,
1999 annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 2
<NAME> TREASURY PORTFOLIO RESERVE SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1999
<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 5652266729
<INVESTMENTS-AT-VALUE> 5652266729
<RECEIVABLES> 18816180
<ASSETS-OTHER> 269995
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 5671352904
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 138210159
<TOTAL-LIABILITIES> 138210159
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 5532915517
<SHARES-COMMON-STOCK> 5532915517
<SHARES-COMMON-PRIOR> 5143411553
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 227228
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 5533142745
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 137672982
<OTHER-INCOME> 0
<EXPENSES-NET> (4675052)
<NET-INVESTMENT-INCOME> 132997930
<REALIZED-GAINS-CURRENT> 104590
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 133102520
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (132997930)
<DISTRIBUTIONS-OF-GAINS> (699973)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 19113118089
<NUMBER-OF-SHARES-REDEEMED> (18775136517)
<SHARES-REINVESTED> 51522392
<NET-CHANGE-IN-ASSETS> 388908581
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 822611
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1585583
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5730554
<AVERAGE-NET-ASSETS> 97774
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.00
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.89
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Tax Advantage Portfolio Institutional Shares
February 28, 1999 semiannual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 7
<NAME> TAX ADVANTAGE PORTFOLIO INSTITUTIONAL SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1999
<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 112439235
<INVESTMENTS-AT-VALUE> 112439235
<RECEIVABLES> 17426176
<ASSETS-OTHER> 258055
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 130123467
<PAYABLE-FOR-SECURITIES> 5958920
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 493066
<TOTAL-LIABILITIES> 6451986
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 123631247
<SHARES-COMMON-STOCK> 123631247
<SHARES-COMMON-PRIOR> 144184331
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 40234
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 123671481
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 3442336
<OTHER-INCOME> 0
<EXPENSES-NET> (203870)
<NET-INVESTMENT-INCOME> 3238466
<REALIZED-GAINS-CURRENT> (2637)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 3235829
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (3238466)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 560787698
<NUMBER-OF-SHARES-REDEEMED> (582098733)
<SHARES-REINVESTED> 757951
<NET-CHANGE-IN-ASSETS> (20555721)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 42871
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 148136
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 332263
<AVERAGE-NET-ASSETS> 105543325
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> (0.02)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.20
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Tax Advantage Portfolio Private Shares
February 28, 1999 semiannual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 7
<NAME> TAX ADVANTAGE PORTFOLIO PRIVATE SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1999
<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 112439235
<INVESTMENTS-AT-VALUE> 112439235
<RECEIVABLES> 17426176
<ASSETS-OTHER> 258055
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 130123467
<PAYABLE-FOR-SECURITIES> 5958920
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 493066
<TOTAL-LIABILITIES> 6451986
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 123631247
<SHARES-COMMON-STOCK> 123631247
<SHARES-COMMON-PRIOR> 144184331
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 40234
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 123671481
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 3442336
<OTHER-INCOME> 0
<EXPENSES-NET> (203870)
<NET-INVESTMENT-INCOME> 3238466
<REALIZED-GAINS-CURRENT> (2637)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 3235829
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (3238466)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 560787698
<NUMBER-OF-SHARES-REDEEMED> (582098733)
<SHARES-REINVESTED> 757951
<NET-CHANGE-IN-ASSETS> (20555721)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 42871
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 148136
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 332263
<AVERAGE-NET-ASSETS> 43819936
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> (0.02)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.45
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Government & Agency Portfolio Institutional Shares
February 28, 1999 annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 8
<NAME> GOVERNMENT & AGENCY PORTFOLIO INSTITUTIONAL SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1999
<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 241638554
<INVESTMENTS-AT-VALUE> 241638554
<RECEIVABLES> 204277
<ASSETS-OTHER> 16645
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 241859476
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 963602
<TOTAL-LIABILITIES> 963602
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 240895874
<SHARES-COMMON-STOCK> 240895874
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 240895874
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 5114867
<OTHER-INCOME> 0
<EXPENSES-NET> (144903)
<NET-INVESTMENT-INCOME> 4969964
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 4969964
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (4969964)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 575772826
<NUMBER-OF-SHARES-REDEEMED> (338978815)
<SHARES-REINVESTED> 4101863
<NET-CHANGE-IN-ASSETS> 240895874
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 101611
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 358526
<AVERAGE-NET-ASSETS> 103400053
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.03
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> (0.03)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.05
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Government & Agency Portfolio Private Shares
February 28, 1999 annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 8
<NAME> GOVERNMENT & AGENCY PORTFOLIO PRIVATE SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1999
<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 241638554
<INVESTMENTS-AT-VALUE> 241638554
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<NUMBER-OF-SHARES-SOLD> 575772826
<NUMBER-OF-SHARES-REDEEMED> (338978815)
<SHARES-REINVESTED> 4101863
<NET-CHANGE-IN-ASSETS> 240895874
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<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.35
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<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Government & Agency Portfolio Cash Management Shares
February 28, 1999 annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 8
<NAME> GOVERNMENT & AGENCY PORTFOLIO CASH MANAGEMENT SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1999
<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 241638554
<INVESTMENTS-AT-VALUE> 241638554
<RECEIVABLES> 204277
<ASSETS-OTHER> 16645
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<TOTAL-ASSETS> 241859476
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<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 963602
<TOTAL-LIABILITIES> 963602
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<PAID-IN-CAPITAL-COMMON> 240895874
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<EXPENSES-NET> (144903)
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<DISTRIBUTIONS-OF-INCOME> (4969964)
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<NUMBER-OF-SHARES-SOLD> 575772826
<NUMBER-OF-SHARES-REDEEMED> (338978815)
<SHARES-REINVESTED> 4101863
<NET-CHANGE-IN-ASSETS> 240895874
<ACCUMULATED-NII-PRIOR> 0
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<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.14
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<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Government & Agency Portfolio Resource Shares
February 28, 1999 annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 8
<NAME> GOVERNMENT & AGENCY PORTFOLIO RESOURCE SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1999
<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 241638554
<INVESTMENTS-AT-VALUE> 241638554
<RECEIVABLES> 204277
<ASSETS-OTHER> 16645
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<TOTAL-ASSETS> 241859476
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 963602
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<PAID-IN-CAPITAL-COMMON> 240895874
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<SHARES-COMMON-PRIOR> 0
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<OVERDISTRIBUTION-GAINS> 0
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<NET-ASSETS> 240895874
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<NUMBER-OF-SHARES-REDEEMED> (338978815)
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<PER-SHARE-NAV-END> 1.00
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<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Tax Advantage Portfolio Personal Shares
February 28, 1999 semiannual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 7
<NAME> TAX ADVANTAGE PORTFOLIO PERSONAL SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
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<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 112439235
<INVESTMENTS-AT-VALUE> 112439235
<RECEIVABLES> 17426176
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<OTHER-ITEMS-ASSETS> 0
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<PAYABLE-FOR-SECURITIES> 5958920
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 493066
<TOTAL-LIABILITIES> 6451986
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 123631247
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<SHARES-COMMON-PRIOR> 144184331
<ACCUMULATED-NII-CURRENT> 0
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<NET-ASSETS> 123671481
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<EXPENSES-NET> (203870)
<NET-INVESTMENT-INCOME> 3238466
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<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (3238466)
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<NUMBER-OF-SHARES-SOLD> 560787698
<NUMBER-OF-SHARES-REDEEMED> (582098733)
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<NET-CHANGE-IN-ASSETS> (20555721)
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<OVERDISTRIB-NII-PRIOR> 0
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<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Tax Advantage Portfolio Cash Management Shares
February 28, 1999 semiannual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 7
<NAME> TAX ADVANTAGE PORTFOLIO CASH MANAGEMENT SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1999
<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 112439235
<INVESTMENTS-AT-VALUE> 112439235
<RECEIVABLES> 17426176
<ASSETS-OTHER> 258055
<OTHER-ITEMS-ASSETS> 0
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<PAYABLE-FOR-SECURITIES> 5958920
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 493066
<TOTAL-LIABILITIES> 6451986
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 123631247
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<SHARES-COMMON-PRIOR> 144184331
<ACCUMULATED-NII-CURRENT> 0
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<AVG-DEBT-PER-SHARE> 0
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Tax Advantage Portfolio Resource Shares
February 28, 1999 semiannual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 7
<NAME> TAX ADVANTAGE PORTFOLIO RESOURCE SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> AUG-31-1999
<PERIOD-END> FEB-28-1999
<INVESTMENTS-AT-COST> 112439235
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<RECEIVABLES> 17426176
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<SENIOR-LONG-TERM-DEBT> 0
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<TOTAL-LIABILITIES> 6451986
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<SHARES-COMMON-PRIOR> 144184331
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<NUMBER-OF-SHARES-SOLD> 560787698
<NUMBER-OF-SHARES-REDEEMED> (582098733)
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Tax Advantage Portfolio Reserve Shares
February 28, 1999 semiannual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 7
<NAME> TAX ADVANTAGE PORTFOLIO RESERVE SHARES
<S> <C>
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<FISCAL-YEAR-END> AUG-31-1999
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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 from the Short Term
Investment Trust Government & Agency Portfolio Personal Shares
February 28, 1999 annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 8
<NAME> GOVERNMENT & AGENCY PORTFOLIO PERSONAL SHARES
<S> <C>
<PERIOD-TYPE> 6-MOS
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<PERIOD-END> FEB-28-1999
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information from the Short Term
Investment Trust Government & Agency Portfolio Reserve Shares
February 28, 1999 annual report.
</LEGEND>
<CIK> 0000205007
<NAME> SHORT TERM INVESTMENT TRUST
<SERIES>
<NUMBER> 8
<NAME> GOVERNMENT & AGENCY PORTFOLIO RESERVE SHARES
<S> <C>
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<PERIOD-END> FEB-28-1999
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