[ARTICLE] 6
[CIK] 0000943309
[NAME] SB INSTITUTIONAL CASH MANAGEMENT FUND
[SERIES]
   [NUMBER] 4
   [NAME] INSTITUTIONAL MUNICIPAL A
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   6-MOS
[FISCAL-YEAR-END]                          MAY-31-1998
[PERIOD-END]                               NOV-30-1998
[INVESTMENTS-AT-COST]                       79,375,290
[INVESTMENTS-AT-VALUE]                      79,375,290
[RECEIVABLES]                                  696,025
[ASSETS-OTHER]                                  13,086
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                              80,084,401
[PAYABLE-FOR-SECURITIES]                             0
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                      292,193
[TOTAL-LIABILITIES]                            292,193
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                    79,792,208
[SHARES-COMMON-STOCK]                       79,792,207
[SHARES-COMMON-PRIOR]                       23,665,848
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                              0
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                             0
[NET-ASSETS]                                79,792,208
[DIVIDEND-INCOME]                                    0
[INTEREST-INCOME]                            1,158,499
[OTHER-INCOME]                                       0
[EXPENSES-NET]                                  68,891
[NET-INVESTMENT-INCOME]                      1,089,608
[REALIZED-GAINS-CURRENT]                           290
[APPREC-INCREASE-CURRENT]                            0
[NET-CHANGE-FROM-OPS]                        1,089,898
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                    1,089,898
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                    366,297,905
[NUMBER-OF-SHARES-REDEEMED]                311,048,652
[SHARES-REINVESTED]                          (876,667)
[NET-CHANGE-IN-ASSETS]                      56,126,210
[ACCUMULATED-NII-PRIOR]                              0
[ACCUMULATED-GAINS-PRIOR]                            0
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                           82,798
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                 68,891
[AVERAGE-NET-ASSETS]                        61,368,086
[PER-SHARE-NAV-BEGIN]                             1.00
[PER-SHARE-NII]                                   .018
[PER-SHARE-GAIN-APPREC]                              0
[PER-SHARE-DIVIDEND]                            (.018)
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                               1.00
[EXPENSE-RATIO]                                    .23
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>