<TABLE> <S> <C>
<ARTICLE> 6
<SERIES>
<NUMBER> 041
<NAME> WM SAM FLEXIBLE INCOME PORTFOLIO CL.A
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> OCT-31-2000
<PERIOD-END> APR-30-2000
<INVESTMENTS-AT-COST> 214,292,763
<INVESTMENTS-AT-VALUE> 213,549,425
<RECEIVABLES> 1,253,705
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 16,101
<TOTAL-ASSETS> 214,819,231
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 981,717
<TOTAL-LIABILITIES> 981,717
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 153,890,294
<SHARES-COMMON-STOCK> 13,990,299
<SHARES-COMMON-PRIOR> 18,092,408
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> (1,774,210)
<ACCUMULATED-NET-GAINS> 2,913,063
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (743,338)
<NET-ASSETS> 153,056,851
<DIVIDEND-INCOME> 5,879,853
<INTEREST-INCOME> 30,226
<OTHER-INCOME> 0
<EXPENSES-NET> 1,407,481
<NET-INVESTMENT-INCOME> 4,502,598
<REALIZED-GAINS-CURRENT> 3,027,876
<APPREC-INCREASE-CURRENT> 3,704,658
<NET-CHANGE-FROM-OPS> 11,235,132
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (5,026,035)
<DISTRIBUTIONS-OF-GAINS> (531,697)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 371,949
<NUMBER-OF-SHARES-REDEEMED> (4,966,376)
<SHARES-REINVESTED> 492,318
<NET-CHANGE-IN-ASSETS> (27,387,686)
<ACCUMULATED-NII-PRIOR> 65,147
<ACCUMULATED-GAINS-PRIOR> 563,851
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 170,177
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,418,934
<AVERAGE-NET-ASSETS> 174,110,956
<PER-SHARE-NAV-BEGIN> 10.75
<PER-SHARE-NII> 0.21
<PER-SHARE-GAIN-APPREC> 0.32
<PER-SHARE-DIVIDEND> (0.23)
<PER-SHARE-DISTRIBUTIONS> (0.11)
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 10.94
<EXPENSE-RATIO> 1.07
</TABLE>