<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
<F1> This item relates to the Fund on a composite
basis and not on a class basis
</LEGEND>
<SERIES>
<NUMBER> 12
<NAME> PACE FUND B
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> JUN-30-2000
<PERIOD-START> JUL-01-1999
<PERIOD-END> JUN-30-2000
<INVESTMENTS-AT-COST> 2,732,501,978 <F1>
<INVESTMENTS-AT-VALUE> 3,664,620,350 <F1>
<RECEIVABLES> 90,057,463 <F1>
<ASSETS-OTHER> 200,531 <F1>
<OTHER-ITEMS-ASSETS> 0 <F1>
<TOTAL-ASSETS> 3,754,878,344 <F1>
<PAYABLE-FOR-SECURITIES> 47,749,747 <F1>
<SENIOR-LONG-TERM-DEBT> 0 <F1>
<OTHER-ITEMS-LIABILITIES> 9,312,048 <F1>
<TOTAL-LIABILITIES> 57,061,795 <F1>
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 123,674,831
<SHARES-COMMON-STOCK> 10,269,759
<SHARES-COMMON-PRIOR> 9,963,055
<ACCUMULATED-NII-CURRENT> 16,802,887 <F1>
<OVERDISTRIBUTION-NII> 0 <F1>
<ACCUMULATED-NET-GAINS> 116,388,105 <F1>
<OVERDISTRIBUTION-GAINS> 0 <F1>
<ACCUM-APPREC-OR-DEPREC> 932,118,372 <F1>
<NET-ASSETS> 137,649,531
<DIVIDEND-INCOME> 43,754,786 <F1>
<INTEREST-INCOME> 15,249,818 <F1>
<OTHER-INCOME> 0 <F1>
<EXPENSES-NET> (32,659,888)<F1>
<NET-INVESTMENT-INCOME> 26,344,716 <F1>
<REALIZED-GAINS-CURRENT> 223,620,305 <F1>
<APPREC-INCREASE-CURRENT> (106,413,346)<F1>
<NET-CHANGE-FROM-OPS> 143,551,675 <F1>
<EQUALIZATION> 0 <F1>
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (20,187,425)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 12,119,947
<NUMBER-OF-SHARES-REDEEMED> 1,426,470
<SHARES-REINVESTED> (13,239,713)
<NET-CHANGE-IN-ASSETS> (14,178,922)
<ACCUMULATED-NII-PRIOR> 18,853,459 <F1>
<ACCUMULATED-GAINS-PRIOR> 460,007,937 <F1>
<OVERDISTRIB-NII-PRIOR> 0 <F1>
<OVERDIST-NET-GAINS-PRIOR> 0 <F1>
<GROSS-ADVISORY-FEES> 16,374,993 <F1>
<INTEREST-EXPENSE> 0 <F1>
<GROSS-EXPENSE> 32,667,424 <F1>
<AVERAGE-NET-ASSETS> 135,775,688
<PER-SHARE-NAV-BEGIN> 15.239
<PER-SHARE-NII> (0.011)
<PER-SHARE-GAIN-APPREC> 0.467
<PER-SHARE-DIVIDEND> 0.000
<PER-SHARE-DISTRIBUTIONS> (2.292)
<RETURNS-OF-CAPITAL> 0.000
<PER-SHARE-NAV-END> 13.403
<EXPENSE-RATIO> 1.62
</TABLE>
