WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

 

<ARTICLE> 6
<CIK>               319767
<NAME>              OPPENHEIMER CAPITAL APPRECIATION FUND-A

                                                                     
<PERIOD-TYPE>                                                           12-MOS
<FISCAL-YEAR-END>                                                       AUG-31-2000
<PERIOD-START>                                                          SEP-01-1999
<PERIOD-END>                                                            AUG-31-2000
<INVESTMENTS-AT-COST>                                                               4,818,354,173
<INVESTMENTS-AT-VALUE>                                                              6,665,551,266
<RECEIVABLES>                                                                          22,563,064
<ASSETS-OTHER>                                                                            332,127
<OTHER-ITEMS-ASSETS>                                                                      800,527
<TOTAL-ASSETS>                                                                      6,689,246,984
<PAYABLE-FOR-SECURITIES>                                                                  715,143
<SENIOR-LONG-TERM-DEBT>                                                                         0
<OTHER-ITEMS-LIABILITIES>                                                               8,654,385
<TOTAL-LIABILITIES>                                                                     9,369,528
<SENIOR-EQUITY>                                                                                 0
<PAID-IN-CAPITAL-COMMON>                                                            4,320,720,098
<SHARES-COMMON-STOCK>                                                                  58,738,938
<SHARES-COMMON-PRIOR>                                                                  46,310,458
<ACCUMULATED-NII-CURRENT>                                                                       0
<OVERDISTRIBUTION-NII>                                                                    277,880
<ACCUMULATED-NET-GAINS>                                                               512,238,145
<OVERDISTRIBUTION-GAINS>                                                                        0
<ACCUM-APPREC-OR-DEPREC>                                                            1,847,197,093
<NET-ASSETS>                                                                        3,648,961,253
<DIVIDEND-INCOME>                                                                      25,774,191
<INTEREST-INCOME>                                                                      27,097,486
<OTHER-INCOME>                                                                                  0
<EXPENSES-NET>                                                                         58,176,407
<NET-INVESTMENT-INCOME>                                                                (5,304,730)
<REALIZED-GAINS-CURRENT>                                                              610,521,636
<APPREC-INCREASE-CURRENT>                                                           1,150,983,759
<NET-CHANGE-FROM-OPS>                                                               1,756,200,665
<EQUALIZATION>                                                                                  0
<DISTRIBUTIONS-OF-INCOME>                                                                       0
<DISTRIBUTIONS-OF-GAINS>                                                              156,146,182
<DISTRIBUTIONS-OTHER>                                                                           0
<NUMBER-OF-SHARES-SOLD>                                                                21,248,494
<NUMBER-OF-SHARES-REDEEMED>                                                            11,817,625
<SHARES-REINVESTED>                                                                     2,997,611
<NET-CHANGE-IN-ASSETS>                                                              3,491,250,087
<ACCUMULATED-NII-PRIOR>                                                                         0
<ACCUMULATED-GAINS-PRIOR>                                                             207,846,924
<OVERDISTRIB-NII-PRIOR>                                                                   213,477
<OVERDIST-NET-GAINS-PRIOR>                                                                      0
<GROSS-ADVISORY-FEES>                                                                  29,201,218
<INTEREST-EXPENSE>                                                                              0
<GROSS-EXPENSE>                                                                        58,247,316
<AVERAGE-NET-ASSETS>                                                                2,898,000,000
<PER-SHARE-NAV-BEGIN>                                                                       44.73
<PER-SHARE-NII>                                                                             (0.02)
<PER-SHARE-GAIN-APPREC>                                                                     20.63
<PER-SHARE-DIVIDEND>                                                                         0.00
<PER-SHARE-DISTRIBUTIONS>                                                                    3.22
<RETURNS-OF-CAPITAL>                                                                         0.00
<PER-SHARE-NAV-END>                                                                         62.12
<EXPENSE-RATIO>                                                                              1.06
[AVG-DEBT-OUTSTANDING]                                                                          0
[AVG-DEBT-PER-SHARE]                                                                         0.00