<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000920467
<NAME> T. ROWE PRICE PRIME RESERVE PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> JUN-30-2000
<INVESTMENTS-AT-COST> 23188
<INVESTMENTS-AT-VALUE> 23188
<RECEIVABLES> 246
<ASSETS-OTHER> 11
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 23445
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 111
<TOTAL-LIABILITIES> 111
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 23329
<SHARES-COMMON-STOCK> 23329
<SHARES-COMMON-PRIOR> 19740
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 5
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 23329
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 710
<OTHER-INCOME> 0
<EXPENSES-NET> 62
<NET-INVESTMENT-INCOME> 648
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 648
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (648)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 18219
<NUMBER-OF-SHARES-REDEEMED> 15728
<SHARES-REINVESTED> 648
<NET-CHANGE-IN-ASSETS> 3589
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 5
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 62
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 1
<PER-SHARE-NII> 0.029
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0.029
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1
<EXPENSE-RATIO> 0.55
</TABLE>
