<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AND THE CONSOLIDATED STATEMENT OF INCOME INCLUDED IN
THE COMPANY'S FORM 10-K FOR THE YEAR ENDED MARCH 31, 2000, AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> MAR-31-2000
<PERIOD-START> APR-01-1999
<PERIOD-END> MAR-31-2000
<CASH> 237,046
<SECURITIES> 49,145
<RECEIVABLES> 69,903
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 358,342
<PP&E> 18,004
<DEPRECIATION> 12,835
<TOTAL-ASSETS> 467,171
<CURRENT-LIABILITIES> 44,425
<BONDS> 0
0
0
<COMMON> 2,105
<OTHER-SE> 383,552
<TOTAL-LIABILITY-AND-EQUITY> 467,171
<SALES> 0
<TOTAL-REVENUES> 241,439
<CGS> 0
<TOTAL-COSTS> 114,619
<OTHER-EXPENSES> 15,895
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 124,613
<INCOME-TAX> 43,296
<INCOME-CONTINUING> 81,317
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 81,317
<EPS-BASIC> .40
<EPS-DILUTED> .33
</TABLE>