<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from the N-SAR
answer file for the twelve months ending September 30, 2000 and is qualified in
its entirety by reference to the N-SAR answer file for the twelve months ending
September 30, 2000 for the Bernstein Intermediate Duration Portfolio.
</LEGEND>
<SERIES>
<NUMBER> 05
<NAME> BERNSTEIN INTERMEDIATE DURATION
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-END> SEP-30-2000
<INVESTMENTS-AT-COST> 2,728,112,718
<INVESTMENTS-AT-VALUE> 2,671,945,746
<RECEIVABLES> 237,008,382
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 28,192
<TOTAL-ASSETS> 2,908,982,320
<PAYABLE-FOR-SECURITIES> 831,247,818
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 35,820,515
<TOTAL-LIABILITIES> 867,068,333
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 2,174,250,925
<SHARES-COMMON-STOCK> 163,287,223
<SHARES-COMMON-PRIOR> 211,115,466
<ACCUMULATED-NII-CURRENT> (4,567,187)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (72,213,074)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (55,719,966)
<NET-ASSETS> 2,041,913,987
<DIVIDEND-INCOME> 7,136
<INTEREST-INCOME> 162,766,765
<OTHER-INCOME> 0
<EXPENSES-NET> 13,830,511
<NET-INVESTMENT-INCOME> 148,943,390
<REALIZED-GAINS-CURRENT> (51,320,503)
<APPREC-INCREASE-CURRENT> 14,874,157
<NET-CHANGE-FROM-OPS> 112,497,044
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 148,932,245
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 27,994,065
<NUMBER-OF-SHARES-REDEEMED> 78,676,847
<SHARES-REINVESTED> 2,854,539
<NET-CHANGE-IN-ASSETS> (632,493,539)
<ACCUMULATED-NII-PRIOR> (4,578,332)
<ACCUMULATED-GAINS-PRIOR> (20,892,571)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 10,848,932
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 13,830,511
<AVERAGE-NET-ASSETS> 2,302,296,746
<PER-SHARE-NAV-BEGIN> 12.67
<PER-SHARE-NII> 0.81
<PER-SHARE-GAIN-APPREC> (0.16)
<PER-SHARE-DIVIDEND> 0.81
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 12.51
<EXPENSE-RATIO> 0.60
</TABLE>
