<TABLE> <S> <C>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM OPTIMARK
HOLDINGS, INC. AND SUBSIDIARIES UNAUDITED CONDENSED CONSOLIDATED FINANCIAL
STATEMENTS AT SEPTEMBER 30, 2000 AND FOR THE NINE MONTHS ENDED SEPTEMBER 30,
2000, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> SEP-30-2000
<CASH> 8,409,182
<SECURITIES> 0
<RECEIVABLES> 2,927,922
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 12,465,115
<PP&E> 16,155,626
<DEPRECIATION> 7,981,904
<TOTAL-ASSETS> 47,091,251
<CURRENT-LIABILITIES> 10,621,506
<BONDS> 0
0
227,221
<COMMON> 366,121
<OTHER-SE> 35,556,687
<TOTAL-LIABILITY-AND-EQUITY> 47,091,251
<SALES> 0
<TOTAL-REVENUES> 9,620,266
<CGS> 0
<TOTAL-COSTS> 7,384,797
<OTHER-EXPENSES> 11,530,584
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 34,395
<INCOME-PRETAX> (72,533,073)
<INCOME-TAX> 0
<INCOME-CONTINUING> (7,883,429)
<DISCONTINUED> (64,649,644)
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (72,533,073)
<EPS-BASIC> (1.99)
<EPS-DILUTED> (1.99)
</TABLE>