<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM SUCH 10-Q DATED SEPTEMBER 30, 1996 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH 10-Q. </LEGEND> <MULTIPLIER> 1,000 <CURRENCY> U.S. DOLLARS <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1995 <PERIOD-START> JUL-01-1996 <PERIOD-END> SEP-30-1996 <EXCHANGE-RATE> 1 <CASH> 39,124 <SECURITIES> 92,309 <RECEIVABLES> 0 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 132,374 <PP&E> 26,426 <DEPRECIATION> 19,412 <TOTAL-ASSETS> 143,460 <CURRENT-LIABILITIES> 5,375 <BONDS> 0 <COMMON> 210 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 133,456 <TOTAL-LIABILITY-AND-EQUITY> 143,460 <SALES> 0 <TOTAL-REVENUES> 4,120 <CGS> 0 <TOTAL-COSTS> 10,357 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 109 <INCOME-PRETAX> (6,346) <INCOME-TAX> 0 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> (6,346) <EPS-PRIMARY> (0.33) <EPS-DILUTED> 0