<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from the LB
Series Fund, Inc. Semi-Annual Report to Shareholders dated June 30, 2000 and
is qualified in its entirety by reference to such Semi-Annual Report.
</LEGEND>
<SERIES>
<NUMBER> 5
<NAME> LB SERIES FUND, INC. - OPPORTUNITY GROWTH PORTFOLIO
</SERIES>
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<EXCHANGE-RATE> 1
<INVESTMENTS-AT-COST> 419,780
<INVESTMENTS-AT-VALUE> 488,261
<RECEIVABLES> 5,306
<ASSETS-OTHER> 20
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 493,587
<PAYABLE-FOR-SECURITIES> 1,358
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 0
<TOTAL-LIABILITIES> 1,358
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 397,047
<SHARES-COMMON-STOCK> 33,246
<SHARES-COMMON-PRIOR> 30,977
<ACCUMULATED-NII-CURRENT> 422
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 26,278
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 68,482
<NET-ASSETS> 492,229
<DIVIDEND-INCOME> 218
<INTEREST-INCOME> 1,123
<OTHER-INCOME> 0
<EXPENSES-NET> 919
<NET-INVESTMENT-INCOME> 422
<REALIZED-GAINS-CURRENT> 67,083
<APPREC-INCREASE-CURRENT> (44,921)
<NET-CHANGE-FROM-OPS> 22,584
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2,636
<NUMBER-OF-SHARES-REDEEMED> 367
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 55,323
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (40,804)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 919
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 919
<AVERAGE-NET-ASSETS> 461,924
<PER-SHARE-NAV-BEGIN> 14.10
<PER-SHARE-NII> 0.01
<PER-SHARE-GAIN-APPREC> 0.70
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 14.81
<EXPENSE-RATIO> 0.40
</TABLE>
