<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1995 <PERIOD-END> JUN-30-1995 <CASH> 46,738 <SECURITIES> 227,903 <RECEIVABLES> 16,900 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 302,151 <PP&E> 127,653 <DEPRECIATION> 35,277 <TOTAL-ASSETS> 404,385 <CURRENT-LIABILITIES> 38,695 <BONDS> 23,333 <COMMON> 334 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 342,023 <TOTAL-LIABILITY-AND-EQUITY> 404,385 <SALES> 64,670 <TOTAL-REVENUES> 72,866 <CGS> 5,152 <TOTAL-COSTS> 64,381 <OTHER-EXPENSES> 4,517 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 3,968 <INCOME-TAX> 420 <INCOME-CONTINUING> 3,548 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 3,548 <EPS-PRIMARY> 0.10 <EPS-DILUTED> 0.10