<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> BD
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM
CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION, CONSOLIDATED STATEMENTS
OF OPERATIONS, CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<CIK> 0000853456
<NAME> HENRY JOHN W & CO/MILLBURN LP
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1995
<PERIOD-START>                             JAN-01-1997             JAN-01-1996
<PERIOD-END>                               MAR-31-1997             MAR-31-1996
<CASH>                                               0                       0
<RECEIVABLES>                               63,659,714              55,846,355
<SECURITIES-RESALE>                                  0                       0
<SECURITIES-BORROWED>                                0                       0
<INSTRUMENTS-OWNED>                                  0                       0
<PP&E>                                               0                       0
<TOTAL-ASSETS>                              63,659,714              55,846,355
<SHORT-TERM>                                         0                       0
<PAYABLES>                                     460,935                 872,421
<REPOS-SOLD>                                         0                       0
<SECURITIES-LOANED>                                  0                       0
<INSTRUMENTS-SOLD>                                   0                       0
<LONG-TERM>                                          0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                             0                       0
<OTHER-SE>                                  63,198,779              54,973,934
<TOTAL-LIABILITY-AND-EQUITY>                63,659,714              55,846,355
<TRADING-REVENUE>                                    0                  51,414
<INTEREST-DIVIDENDS>                                 0                 601,115
<COMMISSIONS>                                        0               1,797,015
<INVESTMENT-BANKING-REVENUES>                3,723,108                       0
<FEE-REVENUE>                                        0                       0
<INTEREST-EXPENSE>                                   0                       0
<COMPENSATION>                                       0                       0
<INCOME-PRETAX>                              3,723,108             (1,144,486)
<INCOME-PRE-EXTRAORDINARY>                   3,723,108             (1,144,486)
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                 3,723,108             (1,144,486)
<EPS-PRIMARY>                                    12.27                  (3.31)
<EPS-DILUTED>                                    12.27                  (3.31)
        

</TABLE>