<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEETS AT SEPTEMBER 30, JUNE 30, AND MARCH 31, 1997 AND THE
CONSOLIDATED STATEMENTS OF INCOME FOR THE NINE, SIX, AND THREE MONTHS ENDED
SEPTEMBER 30, JUNE 30, AND MARCH 31, 1997 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   9-MOS                   6-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-START>                             JAN-01-1997             JAN-01-1997             JAN-01-1997
<PERIOD-END>                               SEP-30-1997             JUN-30-1997             MAR-31-1997
<CASH>                                           9,636                  11,570                  12,754
<SECURITIES>                                   183,932                 188,876                 180,148
<RECEIVABLES>                                  357,569                 347,996                 344,588
<ALLOWANCES>                                     2,554                   2,479                   2,423
<INVENTORY>                                          0                       0                       0
<CURRENT-ASSETS>                               187,891                 178,569                 178,137
<PP&E>                                           7,334                   7,088                   6,867
<DEPRECIATION>                                   3,104                   2,997                   2,906
<TOTAL-ASSETS>                                 568,847                 566,865                 553,021
<CURRENT-LIABILITIES>                          285,847                 272,474                 263,353
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                            61                      61                      61
<OTHER-SE>                                      84,558                  81,737                  78,711
<TOTAL-LIABILITY-AND-EQUITY>                   568,847                 566,865                 553,021
<SALES>                                              0                       0                       0
<TOTAL-REVENUES>                                32,366                  21,173                  10,602
<CGS>                                                0                       0                       0
<TOTAL-COSTS>                                   25,256                  16,563                   8,139
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                   225                     150                      75
<INTEREST-EXPENSE>                                   0                       0                       0
<INCOME-PRETAX>                                  6,885                   4,460                   8,388
<INCOME-TAX>                                     2,554                   1,654                     913
<INCOME-CONTINUING>                                  0                       0                       0
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     4,331                   2,807                   1,474
<EPS-PRIMARY>                                     1.17                     .76                     .40
<EPS-DILUTED>                                     1.10                     .72                     .38


</TABLE>