S&P 500 ends lower as Dell and Nvidia drop

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PowerShares QQQ Trust, Series 1 (NASDAQ: QQQ) Delayed: 715.88 -22.07 (2.99%)
Previous Close $737.95    52 Week High $119.66 
Open $715.74    52 Week Low $94.84 
Day High $723.61    P/E N/A 
Day Low $713.28    EPS $0.00 
Volume 30,942,387       

S&P DEP RECEIPTS (NYSE: SPY) Delayed: 735.80 -8.59 (1.15%)
Previous Close $744.39    52 Week High $219.60 
Open $733.81    52 Week Low $181.02 
Day High $739.63    P/E N/A 
Day Low $732.30    EPS $0.00 
Volume 27,789,702