[ARTICLE] 6
[CIK] 0000701388
[NAME] CAPITAL APPRECIATION FUND
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   6-MOS
[FISCAL-YEAR-END]                          DEC-31-1998
[PERIOD-END]                               JUN-30-1998
[INVESTMENTS-AT-COST]                      384,453,253
[INVESTMENTS-AT-VALUE]                     603,245,326
[RECEIVABLES]                                  779,036
[ASSETS-OTHER]                                     678
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                             604,025,040
[PAYABLE-FOR-SECURITIES]                             0
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                      367,153
[TOTAL-LIABILITIES]                            367,153
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                   377,831,141
[SHARES-COMMON-STOCK]                       10,318,436
[SHARES-COMMON-PRIOR]                        8,801,078
[ACCUMULATED-NII-CURRENT]                      427,193
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                      6,607,480
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                   218,792,073
[NET-ASSETS]                               603,657,887
[DIVIDEND-INCOME]                            1,307,959
[INTEREST-INCOME]                            1,173,118
[OTHER-INCOME]                               2,481,077
[EXPENSES-NET]                               2,053,959
[NET-INVESTMENT-INCOME]                        427,118
[REALIZED-GAINS-CURRENT]                     8,192,316
[APPREC-INCREASE-CURRENT]                  122,331,854
[NET-CHANGE-FROM-OPS]                      130,951,288
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                    1,757,406
[DISTRIBUTIONS-OF-GAINS]                    15,276,145
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                     68,689,580
[NUMBER-OF-SHARES-REDEEMED]                  3,684,198
[SHARES-REINVESTED]                         17,033,551
[NET-CHANGE-IN-ASSETS]                     195,956,670
[ACCUMULATED-NII-PRIOR]                      1,757,481
[ACCUMULATED-GAINS-PRIOR]                   13,961,309
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                        1,848,557
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                              2,053,959
[AVERAGE-NET-ASSETS]                       498,118,658
[PER-SHARE-NAV-BEGIN]                            46.32
[PER-SHARE-NII]                                  00.02
[PER-SHARE-GAIN-APPREC]                         (0.18)
[PER-SHARE-DIVIDEND]                             01.53
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              58.50
[EXPENSE-RATIO]                                  00.83
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>