<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5

<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             OCT-01-1999
<PERIOD-END>                               JUN-30-2000
<CASH>                                      16,166,219
<SECURITIES>                               211,084,740
<RECEIVABLES>                               11,544,876
<ALLOWANCES>                                   986,110
<INVENTORY>                                          0
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<DEPRECIATION>                               3,289,369
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<CURRENT-LIABILITIES>                       27,959,958
<BONDS>                                              0
                                0
                                450,832,439
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<OTHER-SE>                                           0
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<SALES>                                     54,994,862
<TOTAL-REVENUES>                            54,994,862
<CGS>                                        9,002,838
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<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                      488,748
<NET-INCOME>                              (34,711,382)
<EPS-BASIC>                                     (1.13)
<EPS-DILUTED>                                   (1.13)


</TABLE>



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