<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000778108
<NAME> DELAWARE GROUP EQUITY FUNDS IV
<SERIES>
<NUMBER> 012
<NAME> DELAWARE GROWTH OPPORTUNITIES FUND B CLASS
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-END> SEP-30-2000
<INVESTMENTS-AT-COST> 770,378,940
<INVESTMENTS-AT-VALUE> 1,253,462,411
<RECEIVABLES> 25,017,336
<ASSETS-OTHER> 716
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1,278,480,463
<PAYABLE-FOR-SECURITIES> 55,732,656
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 966,796
<TOTAL-LIABILITIES> 56,699,452
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 480,473,063
<SHARES-COMMON-STOCK> 2,114,504
<SHARES-COMMON-PRIOR> 1,074,980
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 258,224,477
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 483,083,471
<NET-ASSETS> 1,221,781,011
<DIVIDEND-INCOME> 957,055
<INTEREST-INCOME> 2,112,590
<OTHER-INCOME> 527,331
<EXPENSES-NET> 13,653,107
<NET-INVESTMENT-INCOME> (10,056,131)
<REALIZED-GAINS-CURRENT> 285,934,911
<APPREC-INCREASE-CURRENT> 256,890,771
<NET-CHANGE-FROM-OPS> 532,769,551
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 133,474,882
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,124,104
<NUMBER-OF-SHARES-REDEEMED> 281,853
<SHARES-REINVESTED> 197,273
<NET-CHANGE-IN-ASSETS> 520,198,487
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 122,023,644
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 7,631,003
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 13,682,027
<AVERAGE-NET-ASSETS> 1,063,369,977
<PER-SHARE-NAV-BEGIN> 25.060
<PER-SHARE-NII> (0.545)
<PER-SHARE-GAIN-APPREC> 18.025
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 5.020
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 37.520
<EXPENSE-RATIO> 1.950
</TABLE>
