<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
The following information is extracted from and qualified by reference to
registrant's report on form N-SAR for the six months ended June 30, 2000 and the unaudited
financial statements included in the registrant's semi annual report to
shareholders.
</LEGEND>
<SERIES>
<NUMBER> 4
<NAME> ACORN TWENTY
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> JUN-30-2000
<INVESTMENTS-AT-COST> 48895
<INVESTMENTS-AT-VALUE> 61481
<RECEIVABLES> 31
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 61512
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 41
<TOTAL-LIABILITIES> 41
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 48733
<SHARES-COMMON-STOCK> 4632
<SHARES-COMMON-PRIOR> 4996
<ACCUMULATED-NII-CURRENT> (181)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 333
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 12586
<NET-ASSETS> 61471
<DIVIDEND-INCOME> 167
<INTEREST-INCOME> 79
<OTHER-INCOME> 0
<EXPENSES-NET> 427
<NET-INVESTMENT-INCOME> (181)
<REALIZED-GAINS-CURRENT> 496
<APPREC-INCREASE-CURRENT> 1148
<NET-CHANGE-FROM-OPS> 1463
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 3897
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 758
<NUMBER-OF-SHARES-REDEEMED> 1405
<SHARES-REINVESTED> 283
<NET-CHANGE-IN-ASSETS> (6999)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 3734
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 285
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 443
<AVERAGE-NET-ASSETS> 64209
<PER-SHARE-NAV-BEGIN> 13.70
<PER-SHARE-NII> (.04)
<PER-SHARE-GAIN-APPREC> .50
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> .89
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.27
<EXPENSE-RATIO> 1.37
</TABLE>
