[ARTICLE] 6
[CIK] 0000355751
[NAME] MONEY MARKET PORTFOLIO        
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          DEC-31-1998
[PERIOD-END]                               DEC-31-1998
[INVESTMENTS-AT-COST]                       42,172,392
[INVESTMENTS-AT-VALUE]                               0
[RECEIVABLES]                                       56
[ASSETS-OTHER]                                       0
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                              42,172,701
[PAYABLE-FOR-SECURITIES]                             0
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                      103,372
[TOTAL-LIABILITIES]                            103,372
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                             0
[SHARES-COMMON-STOCK]                       42,069,329
[SHARES-COMMON-PRIOR]                       27,211,332
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                       1,637,680
[ACCUMULATED-NET-GAINS]                         27,585
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                             0
[NET-ASSETS]                                42,069,329
[DIVIDEND-INCOME]                                    0
[INTEREST-INCOME]                            1,637,680
[OTHER-INCOME]                                       0
[EXPENSES-NET]                                 177,669
[NET-INVESTMENT-INCOME]                      1,460,011
[REALIZED-GAINS-CURRENT]                           215
[APPREC-INCREASE-CURRENT]                            0
[NET-CHANGE-FROM-OPS]                        1,459,796
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                            0
[DISTRIBUTIONS-OF-GAINS]                           215
[DISTRIBUTIONS-OTHER]                        1,439,796
[NUMBER-OF-SHARES-SOLD]                    103,475,184
[NUMBER-OF-SHARES-REDEEMED]                 76,308,910
[SHARES-REINVESTED]                          1,409,254
[NET-CHANGE-IN-ASSETS]                      28,575,528
[ACCUMULATED-NII-PRIOR]                              0
[ACCUMULATED-GAINS-PRIOR]                            0
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                           96,335
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                      0
[AVERAGE-NET-ASSETS]                        27,166,366
[PER-SHARE-NAV-BEGIN]                             1.00
[PER-SHARE-NII]                                   0.49
[PER-SHARE-GAIN-APPREC]                              0
[PER-SHARE-DIVIDEND]                                 0
[PER-SHARE-DISTRIBUTIONS]                         0.49
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                               1.00
[EXPENSE-RATIO]                                   0.65
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>