<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 SEPTEMBER 24, 1999 AND FOR THE NINE MONTHS THEN ENDED AND THE
NOTES THERETO, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS FILED IN THE THIRD QUARTER 1999 JEFFERIES GROUP, INC. 10-Q FILING.
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-24-1999
<EXCHANGE-RATE>                                      1
<CASH>                                          32,625
<RECEIVABLES>                                  329,595
<SECURITIES-RESALE>                             10,540
<SECURITIES-BORROWED>                        2,129,032
<INSTRUMENTS-OWNED>                            135,861
<PP&E>                                          31,728
<TOTAL-ASSETS>                               3,022,831
<SHORT-TERM>                                         0
<PAYABLES>                                     245,729
<REPOS-SOLD>                                     6,378
<SECURITIES-LOANED>                          1,958,067
<INSTRUMENTS-SOLD>                              80,082
<LONG-TERM>                                    149,460
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             2
<OTHER-SE>                                     387,075
<TOTAL-LIABILITY-AND-EQUITY>                 3,022,831
<TRADING-REVENUE>                              163,935
<INTEREST-DIVIDENDS>                            83,718
<COMMISSIONS>                                  148,229
<INVESTMENT-BANKING-REVENUES>                   66,491
<FEE-REVENUE>                                        0
<INTEREST-EXPENSE>                              70,165
<COMPENSATION>                                 244,256
<INCOME-PRETAX>                                 60,908
<INCOME-PRE-EXTRAORDINARY>                      60,908
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    46,521
<EPS-BASIC>                                       1.96
<EPS-DILUTED>                                     1.93