<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM UNAUDITED
CONSOLIDATED FINANCIAL STATEMENTS AS REPORTED ON FORM 10-Q FOR THE QUARTER ENDED
JUNE 30, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                          70,619
<SECURITIES>                                    95,787
<RECEIVABLES>                                   21,822
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                               192,993
<PP&E>                                          12,845
<DEPRECIATION>                                  10,348
<TOTAL-ASSETS>                                 336,439
<CURRENT-LIABILITIES>                           68,184
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           665
<OTHER-SE>                                     254,781
<TOTAL-LIABILITY-AND-EQUITY>                   336,439
<SALES>                                        135,673
<TOTAL-REVENUES>                               141,787
<CGS>                                                0
<TOTAL-COSTS>                                   65,628
<OTHER-EXPENSES>                                 1,452
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               8,604
<INCOME-PRETAX>                                 66,103
<INCOME-TAX>                                    25,546
<INCOME-CONTINUING>                             40,557
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    40,557
<EPS-PRIMARY>                                      .61
<EPS-DILUTED>                                      .61