S&P 500 edges lower as investors hold their breath ahead of economic data

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PowerShares QQQ Trust, Series 1 (NASDAQ: QQQ) Delayed: 706.25 +1.78 (0.25%)
Previous Close $704.47    52 Week High $119.66 
Open $702.20    52 Week Low $94.84 
Day High $709.30    P/E N/A 
Day Low $701.16    EPS $0.00 
Volume 17,568,161       

S&P DEP RECEIPTS (NYSE: SPY) Delayed: 761.23 -2.73 (0.36%)
Previous Close $763.96    52 Week High $219.60 
Open $759.90    52 Week Low $181.02 
Day High $763.47    P/E N/A 
Day Low $758.68    EPS $0.00 
Volume 15,696,846