<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE 1998
FORM 10-K AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1998             DEC-31-1998
<PERIOD-START>                             JAN-01-1998             APR-01-1998             JUL-01-1998
<PERIOD-END>                               MAR-31-1998             JUN-30-1998             SEP-30-1998
<CASH>                                             366                   1,360                   1,936
<SECURITIES>                                    38,698                  34,180                  33,997
<RECEIVABLES>                                    7,054                  11,291                  11,322
<ALLOWANCES>                                         0                       0                       0
<INVENTORY>                                          0                       0                       0
<CURRENT-ASSETS>                                54,321                  55,845                  54,600
<PP&E>                                           2,781                   2,654                   2,577
<DEPRECIATION>                                       0                       0                       0
<TOTAL-ASSETS>                                  66,536                  67,426                  66,081
<CURRENT-LIABILITIES>                            8,129                  10,753                   9,522
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                             1                       1                       1
<OTHER-SE>                                      58,226                  56,478                  56,446
<TOTAL-LIABILITY-AND-EQUITY>                    66,536                  67,426                  66,081
<SALES>                                          9,959                   9,987                  13,844
<TOTAL-REVENUES>                                 9,959                   9,987                  13,844
<CGS>                                            5,798                   5,113                   7,688
<TOTAL-COSTS>                                    5,798                   5,113                   7,688
<OTHER-EXPENSES>                                 8,832                   5,914                   5,518
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                                   0                       0                       0
<INCOME-PRETAX>                                (4,263)                   (680)                     956
<INCOME-TAX>                                   (1,894)                   (413)                     255
<INCOME-CONTINUING>                            (2,369)                   (267)                     701
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                   (2,369)                   (267)                     701
<EPS-PRIMARY>                                    (.28)                   (.03)                     .08
<EPS-DILUTED>                                    (.28)                   (.03)                     .08
        

</TABLE>