Wall St ends up but still down on week as volatility rules

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PowerShares QQQ Trust, Series 1 (NASDAQ: QQQ) Delayed: 684.23 -7.73 (1.12%)
Previous Close $691.96    52 Week High $119.66 
Open $690.41    52 Week Low $94.84 
Day High $692.63    P/E N/A 
Day Low $682.48    EPS $0.00 
Volume 42,840,161       

S&P DEP RECEIPTS (NYSE: SPY) Delayed: 738.93 +0.75 (0.10%)
Previous Close $738.18    52 Week High $219.60 
Open $738.51    52 Week Low $181.02 
Day High $743.72    P/E N/A 
Day Low $737.29    EPS $0.00 
Volume 44,818,914