<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
ACTIVE ASSETS INSTITUTIONAL MONEY TRUST
</LEGEND>
<S> <C>
<PERIOD-TYPE> 5-MOS
<FISCAL-YEAR-END> JUN-30-2000
<PERIOD-END> JUN-30-2000
<INVESTMENTS-AT-COST> 813,487,920
<INVESTMENTS-AT-VALUE> 813,487,920
<RECEIVABLES> 710,174
<ASSETS-OTHER> 102,624
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 814,300,718
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> (872,423)
<TOTAL-LIABILITIES> (872,423)
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 813,380,139
<SHARES-COMMON-STOCK> 813,428,295
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 48,239
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (83)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 813,428,295
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 13,225,324
<OTHER-INCOME> 0
<EXPENSES-NET> (417,325)
<NET-INVESTMENT-INCOME> 12,807,999
<REALIZED-GAINS-CURRENT> (83)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 12,807,916
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (12,807,916)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,224,090,621
<NUMBER-OF-SHARES-REDEEMED> (1,423,130,773)
<SHARES-REINVESTED> 12,368,447
<NET-CHANGE-IN-ASSETS> 813,328,295
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> (312,994)
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> (653,395)
<AVERAGE-NET-ASSETS> 549,396,360
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.023
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> (0.023)
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 0.20
</TABLE>
