Wall Street ends mixed; Nvidia lifts Nasdaq

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PowerShares QQQ Trust, Series 1 (NASDAQ: QQQ) Delayed: 725.95 +8.32 (1.16%)
Previous Close $717.63    52 Week High $119.66 
Open $722.22    52 Week Low $94.84 
Day High $727.95    P/E N/A 
Day Low $719.71    EPS $0.00 
Volume 27,177,196       

S&P DEP RECEIPTS (NYSE: SPY) Delayed: 773.07 +4.02 (0.52%)
Previous Close $769.05    52 Week High $219.60 
Open $771.17    52 Week Low $181.02 
Day High $774.44    P/E N/A 
Day Low $768.40    EPS $0.00 
Volume 23,016,626