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

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PowerShares QQQ Trust, Series 1 (NASDAQ: QQQ) Delayed: 737.50 +0.97 (0.13%)
Previous Close $736.53    52 Week High $119.66 
Open $740.15    52 Week Low $94.84 
Day High $740.58    P/E N/A 
Day Low $735.34    EPS $0.00 
Volume 18,438,879       

S&P DEP RECEIPTS (NYSE: SPY) Delayed: 764.06 -1.55 (0.2%)
Previous Close $765.61    52 Week High $219.60 
Open $766.83    52 Week Low $181.02 
Day High $766.98    P/E N/A 
Day Low $762.35    EPS $0.00 
Volume 25,534,202