Nasdaq, S&P 500 end lower, dragged down by communications services

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PowerShares QQQ Trust, Series 1 (NASDAQ: QQQ) Delayed: 719.71 +7.97 (1.12%)
Previous Close $711.74    52 Week High $119.66 
Open $720.22    52 Week Low $94.84 
Day High $722.29    P/E N/A 
Day Low $714.34    EPS $0.00 
Volume 28,386,653       

S&P DEP RECEIPTS (NYSE: SPY) Delayed: 751.83 +2.66 (0.36%)
Previous Close $749.17    52 Week High $219.60 
Open $750.91    52 Week Low $181.02 
Day High $753.34    P/E N/A 
Day Low $748.66    EPS $0.00 
Volume 33,482,166