<ARTICLE> BD
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION AND THE CONSOLIDATED STATEMENTS
OF EARNINGS AS OF JUNE 25, 1999 AND FOR THE SIX MONTHS THEN ENDED AND THE NOTES
THERETO AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS FILED IN THE SECOND QUARTER, 1999 JEFFERIES GROUP, INC. 10-Q FILING.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-25-1999
<CASH>                                          42,943
<RECEIVABLES>                                  254,888
<SECURITIES-RESALE>                             72,954
<SECURITIES-BORROWED>                        2,787,632
<INSTRUMENTS-OWNED>                            221,206
<PP&E>                                          23,796
<TOTAL-ASSETS>                               3,615,197
<SHORT-TERM>                                         0
<PAYABLES>                                     239,070
<REPOS-SOLD>                                    72,959
<SECURITIES-LOANED>                          2,509,718
<INSTRUMENTS-SOLD>                              91,938
<LONG-TERM>                                    149,436
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             2
<OTHER-SE>                                     376,054
<TOTAL-LIABILITY-AND-EQUITY>                 3,615,197
<TRADING-REVENUE>                              114,889
<INTEREST-DIVIDENDS>                            56,142
<COMMISSIONS>                                   99,383
<INVESTMENT-BANKING-REVENUES>                   50,292
<FEE-REVENUE>                                        0
<INTEREST-EXPENSE>                              47,440
<COMPENSATION>                                 167,513
<INCOME-PRETAX>                                 45,417
<INCOME-PRE-EXTRAORDINARY>                      45,417
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    37,590
<EPS-BASIC>                                       1.59
<EPS-DILUTED>                                     1.56