[ARTICLE] 6
[CIK] 0000943309
[NAME] SB INSTITUTIONAL MUNICIPAL
[SERIES]
   [NUMBER] 3
   [NAME] SB INSTITUTIONAL CASH MANAGEMENT FUND INC.
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          MAY-31-1997
[PERIOD-END]                               MAY-31-1997
[INVESTMENTS-AT-COST]                       50,863,639
[INVESTMENTS-AT-VALUE]                      50,863,639
[RECEIVABLES]                                  317,780
[ASSETS-OTHER]                                 262,769
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                              51,444,188
[PAYABLE-FOR-SECURITIES]                             0
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                    1,288,920
[TOTAL-LIABILITIES]                          1,288,920
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                    50,158,532
[SHARES-COMMON-STOCK]                                1
[SHARES-COMMON-PRIOR]                                1
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                              0
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                             0
[NET-ASSETS]                                50,155,268
[DIVIDEND-INCOME]                                    0
[INTEREST-INCOME]                              826,782
[OTHER-INCOME]                                       0
[EXPENSES-NET]                                  44,708
[NET-INVESTMENT-INCOME]                        782,074
[REALIZED-GAINS-CURRENT]                         3,264
[APPREC-INCREASE-CURRENT]                            0
[NET-CHANGE-FROM-OPS]                          778,810
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                            0
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                              1
[NUMBER-OF-SHARES-REDEEMED]                          0
[SHARES-REINVESTED]                                  0
[NET-CHANGE-IN-ASSETS]                       9,149,862
[ACCUMULATED-NII-PRIOR]                              0
[ACCUMULATED-GAINS-PRIOR]                            0
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                           63,812
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                 94,807
[AVERAGE-NET-ASSETS]                                 1
[PER-SHARE-NAV-BEGIN]                             1.00
[PER-SHARE-NII]                                   .016
[PER-SHARE-GAIN-APPREC]                              0
[PER-SHARE-DIVIDEND]                                 0
[PER-SHARE-DISTRIBUTIONS]                         .016
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                               1.00
[EXPENSE-RATIO]                                     .2
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>