WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from the
semi-annual report dated September 30, 2000 and is qualified in its
entirety by reference to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 161
<NAME> TOTAL RETURN FUND II-INSTITUTIONAL CLASS
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> MAR-31-2001
<PERIOD-END> SEP-30-2000
<INVESTMENTS-AT-COST> 2333523
<INVESTMENTS-AT-VALUE> 2330433
<RECEIVABLES> 41899
<ASSETS-OTHER> 138
<OTHER-ITEMS-ASSETS> 353
<TOTAL-ASSETS> 2372823
<PAYABLE-FOR-SECURITIES> 788843
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 28724
<TOTAL-LIABILITIES> 817567
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1590147
<SHARES-COMMON-STOCK> 153981
<SHARES-COMMON-PRIOR> 130650
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 858
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 29613
<ACCUM-APPREC-OR-DEPREC> (4420)
<NET-ASSETS> 1555256
<DIVIDEND-INCOME> 2
<INTEREST-INCOME> 50297
<OTHER-INCOME> 0
<EXPENSES-NET> 3771
<NET-INVESTMENT-INCOME> 46528
<REALIZED-GAINS-CURRENT> 20632
<APPREC-INCREASE-CURRENT> 2303
<NET-CHANGE-FROM-OPS> 69463
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 44733
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 33819
<NUMBER-OF-SHARES-REDEEMED> 14100
<SHARES-REINVESTED> 3612
<ISSUED-IN-REORGANIZATION> 0
<FUND-REIMBURSEMENT-FEE> 0
<NET-CHANGE-IN-ASSETS> 234945
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 839
<OVERDIST-NET-GAINS-PRIOR> 50245
<GROSS-ADVISORY-FEES> 1828
<INTEREST-EXPENSE> 38
<GROSS-EXPENSE> 3771
<AVERAGE-NET-ASSETS> 1416202
<PER-SHARE-NAV-BEGIN> 9.67
<PER-SHARE-NII> 0.31
<PER-SHARE-GAIN-APPREC> 0.15
<PER-SHARE-DIVIDEND> (0.31)
<PER-SHARE-DISTRIBUTIONS> 0.00
<PER-SHARE-FUND-REIMBURSEMENT-FEE> 0.00
<PER-SHARE-NAV-END> 9.82
<EXPENSE-RATIO> 0.50
</TABLE>
