WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000912028
<NAME> T. ROWE PRICE SUMMIT CASH RESERVE FUND
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> OCT-31-2000
<PERIOD-END> APR-30-2000
<INVESTMENTS-AT-COST> 2723393
<INVESTMENTS-AT-VALUE> 2723393
<RECEIVABLES> 32541
<ASSETS-OTHER> 3871
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 2759805
<PAYABLE-FOR-SECURITIES> 8528
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 10245
<TOTAL-LIABILITIES> 18773
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2741022
<SHARES-COMMON-STOCK> 2741022
<SHARES-COMMON-PRIOR> 2440565
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 10
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 2741032
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 78025
<OTHER-INCOME> 0
<EXPENSES-NET> 5858
<NET-INVESTMENT-INCOME> 72167
<REALIZED-GAINS-CURRENT> (26)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 72141
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (72167)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2401146
<NUMBER-OF-SHARES-REDEEMED> (2169742)
<SHARES-REINVESTED> 69053
<NET-CHANGE-IN-ASSETS> 300457
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 36
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 4825
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5858
<AVERAGE-NET-ASSETS> 2617309
<PER-SHARE-NAV-BEGIN> 1
<PER-SHARE-NII> 0.028
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> (0.028)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1
<EXPENSE-RATIO> 0.45
</TABLE>
