<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
OCC ACCUMULATION TRUST MID CAP PORTFOLIO SEMI-ANNUAL REPORT FOR THE PERIOD ENDED
JUNE 30, 2000
</LEGEND>
<CIK> 0000923185
<NAME> OCC ACCUMILATION TRUST
<SERIES>
<NUMBER> 8
<NAME> MID CAP PORTFOLIO
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<INVESTMENTS-AT-COST> 9,848,238
<INVESTMENTS-AT-VALUE> 11,001,430
<RECEIVABLES> 334,222
<ASSETS-OTHER> 300
<OTHER-ITEMS-ASSETS> 3,875
<TOTAL-ASSETS> 11,339,827
<PAYABLE-FOR-SECURITIES> 225,944
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 4,895
<TOTAL-LIABILITIES> 230,839
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 9,211,644
<SHARES-COMMON-STOCK> 857,541
<SHARES-COMMON-PRIOR> 462,671
<ACCUMULATED-NII-CURRENT> 43,455
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 700,697
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1,153,192
<NET-ASSETS> 11,108,988
<DIVIDEND-INCOME> 68,055
<INTEREST-INCOME> 17,157
<OTHER-INCOME> 0
<EXPENSES-NET> 41,757
<NET-INVESTMENT-INCOME> 43,455
<REALIZED-GAINS-CURRENT> 798,048
<APPREC-INCREASE-CURRENT> 559,677
<NET-CHANGE-FROM-OPS> 1,401,180
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> (253,599)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 500,973
<NUMBER-OF-SHARES-REDEEMED> 129,716
<SHARES-REINVESTED> 23,613
<NET-CHANGE-IN-ASSETS> 5,727,055
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 156,248
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 33,406
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 53,751<F1>
<AVERAGE-NET-ASSETS> 8,397,407
<PER-SHARE-NAV-BEGIN> 11.63
<PER-SHARE-NII> 0.05
<PER-SHARE-GAIN-APPREC> 1.65
<PER-SHARE-DIVIDEND> (0.38)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 12.95
<EXPENSE-RATIO> 1.00
<FN>
<F1>GROSS OF EXPENSE OFFSET - $184, AND INVESTMENT ADVISORY FEE WAIVED $11,810.
</FN>
</TABLE>
