[ARTICLE] 6
[CIK] 0000886043
[NAME] MANAGED MUNICIPAL PORTFOLIO INC.
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   6-MOS
[FISCAL-YEAR-END]                          MAY-31-1997
[PERIOD-END]                               NOV-30-1996
[INVESTMENTS-AT-COST]                      445,111,077
[INVESTMENTS-AT-VALUE]                     451,506,739
[RECEIVABLES]                               10,552,402
[ASSETS-OTHER]                                       0
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                             462,059,141
[PAYABLE-FOR-SECURITIES]                    28,982,186
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                    1,441,291
[TOTAL-LIABILITIES]                         30,423,477
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                   412,313,382
[SHARES-COMMON-STOCK]                       34,498,420
[SHARES-COMMON-PRIOR]                       34,498,420
[ACCUMULATED-NII-CURRENT]                      919,329
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                     12,007,291
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                     6,395,662
[NET-ASSETS]                               431,635,664
[DIVIDEND-INCOME]                                    0
[INTEREST-INCOME]                           13,985,929
[OTHER-INCOME]                                       0
[EXPENSES-NET]                               2,098,502
[NET-INVESTMENT-INCOME]                     11,887,427
[REALIZED-GAINS-CURRENT]                     6,907,024
[APPREC-INCREASE-CURRENT]                    7,336,166
[NET-CHANGE-FROM-OPS]                       26,130,617
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                   12,419,431
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                              0
[NUMBER-OF-SHARES-REDEEMED]                          0
[SHARES-REINVESTED]                                  0
[NET-CHANGE-IN-ASSETS]                      13,711,186
[ACCUMULATED-NII-PRIOR]                      1,451,333
[ACCUMULATED-GAINS-PRIOR]                    5,100,267
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                        1,897,594
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                              2,098,502
[AVERAGE-NET-ASSETS]                       420,611,856
[PER-SHARE-NAV-BEGIN]                            12.11
[PER-SHARE-NII]                                  00.34
[PER-SHARE-GAIN-APPREC]                          00.42
[PER-SHARE-DIVIDEND]                                 0
[PER-SHARE-DISTRIBUTIONS]                        00.36
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              12.51
[EXPENSE-RATIO]                                  00.99
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>