[ARTICLE] 6
[CIK] 0000720506
[NAME] SMITH BARNEY AGGRESSIVE GROWTH FUND INC. CLASS Z
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   6-MOS
[FISCAL-YEAR-END]                          AUG-31-1998
[PERIOD-END]                               FEB-28-1998
[INVESTMENTS-AT-COST]                      454,204,916
[INVESTMENTS-AT-VALUE]                     911,713,233
[RECEIVABLES]                                  994,006
[ASSETS-OTHER]                             130,693,040
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                           1,043,400,279
[PAYABLE-FOR-SECURITIES]                       710,481
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                  131,688,235
[TOTAL-LIABILITIES]                        132,398,716
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                   458,205,208
[SHARES-COMMON-STOCK]                        1,195,269
[SHARES-COMMON-PRIOR]                        1,022,356
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                       4,760,898
[ACCUMULATED-NET-GAINS]                         48,936
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                   457,508,317
[NET-ASSETS]                               911,001,563
[DIVIDEND-INCOME]                              798,928
[INTEREST-INCOME]                              156,753
[OTHER-INCOME]                                       0
[EXPENSES-NET]                               5,705,768
[NET-INVESTMENT-INCOME]                    (4,750,087)
[REALIZED-GAINS-CURRENT]                        49,519
[APPREC-INCREASE-CURRENT]                   79,082,389
[NET-CHANGE-FROM-OPS]                       74,381,821
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                            0
[DISTRIBUTIONS-OF-GAINS]                     2,061,602
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                        133,395
[NUMBER-OF-SHARES-REDEEMED]                     11,829
[SHARES-REINVESTED]                             51,347
[NET-CHANGE-IN-ASSETS]                     100,569,349
[ACCUMULATED-NII-PRIOR]                              0
[ACCUMULATED-GAINS-PRIOR]                   38,846,576
[OVERDISTRIB-NII-PRIOR]                         10,811
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                        2,456,972
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                              5,705,768
[AVERAGE-NET-ASSETS]                        46,114,307
[PER-SHARE-NAV-BEGIN]                            42.60
[PER-SHARE-NII]                                 (0.14)
[PER-SHARE-GAIN-APPREC]                          03.88
[PER-SHARE-DIVIDEND]                                 0
[PER-SHARE-DISTRIBUTIONS]                        01.96
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              44.38
[EXPENSE-RATIO]                                  00.84
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>