Nasdaq Composite falls 2.7%, heading for biggest drop since 2012

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SPDR DOW JONES INDUSTRIAL AVERAGE ETF TRUST (NYSE: DIA) Delayed: 530.62 +2.87 (0.54%)
Previous Close $527.75    52 Week High $189.39 
Open $529.51    52 Week Low $154.38 
Day High $532.17    P/E N/A 
Day Low $529.24    EPS $0.00 
Volume 3,114,692       

NASDAQ OMX Group (NASDAQ: NDAQ) Delayed: 95.72 -1.82 (1.87%)
Previous Close $97.54    52 Week High $71.92 
Open $97.54    52 Week Low $54.62 
Day High $97.55    P/E 42.54 
Day Low $94.61    EPS $2.25 
Volume 4,658,829       

PowerShares QQQ Trust, Series 1 (NASDAQ: QQQ) Delayed: 709.24 +1.60 (0.23%)
Previous Close $707.64    52 Week High $119.66 
Open $707.10    52 Week Low $94.84 
Day High $709.80    P/E N/A 
Day Low $705.10    EPS $0.00 
Volume 23,696,074       

S&P DEP RECEIPTS (NYSE: SPY) Delayed: 765.16 +3.38 (0.44%)
Previous Close $761.78    52 Week High $219.60 
Open $762.45    52 Week Low $181.02 
Day High $766.43    P/E N/A 
Day Low $761.73    EPS $0.00 
Volume 29,549,107