[ARTICLE] 6
[CIK] 0000701388
[NAME] CAPITAL APPRECIATION FUND
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          DEC-31-1998
[PERIOD-END]                               DEC-31-1998
[INVESTMENTS-AT-COST]                      524,779,620
[INVESTMENTS-AT-VALUE]                     889,979,521
[RECEIVABLES]                                1,515,905
[ASSETS-OTHER]                                       0
[OTHER-ITEMS-ASSETS]                               331
[TOTAL-ASSETS]                             891,495,757
[PAYABLE-FOR-SECURITIES]                             0
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                      634,834
[TOTAL-LIABILITIES]                            634,834
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                   494,472,555
[SHARES-COMMON-STOCK]                       12,246,916
[SHARES-COMMON-PRIOR]                        8,801,078
[ACCUMULATED-NII-CURRENT]                    1,059,153
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                     30,123,306
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                   365,205,909
[NET-ASSETS]                               890,860,923
[DIVIDEND-INCOME]                            2,871,426
[INTEREST-INCOME]                            3,117,890
[OTHER-INCOME]                                       0
[EXPENSES-NET]                               4,926,668
[NET-INVESTMENT-INCOME]                      1,062,648
[REALIZED-GAINS-CURRENT]                    31,704,572
[APPREC-INCREASE-CURRENT]                  268,745,690
[NET-CHANGE-FROM-OPS]                      301,512,910
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                    1,757,481
[DISTRIBUTIONS-OF-GAINS]                    15,276,070
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                      3,602,035
[NUMBER-OF-SHARES-REDEEMED]                    448,218
[SHARES-REINVESTED]                            292,021
[NET-CHANGE-IN-ASSETS]                     483,159,706
[ACCUMULATED-NII-PRIOR]                      1,757,481
[ACCUMULATED-GAINS-PRIOR]                   13,691,309
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                        4,360,310
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                              4,926,668
[AVERAGE-NET-ASSETS]                       582,672,194
[PER-SHARE-NAV-BEGIN]                            46.32
[PER-SHARE-NII]                                  00.06
[PER-SHARE-GAIN-APPREC]                          28.07
[PER-SHARE-DIVIDEND]                             00.18
[PER-SHARE-DISTRIBUTIONS]                        01.53
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              72.74
[EXPENSE-RATIO]                                  00.85
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>