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: 524.61 -3.42 (0.65%)
Previous Close $528.03    52 Week High $189.39 
Open $525.64    52 Week Low $154.38 
Day High $525.74    P/E N/A 
Day Low $523.25    EPS $0.00 
Volume 2,477,080       

NASDAQ OMX Group (NASDAQ: NDAQ) Delayed: 94.74 -0.3 (0.32%)
Previous Close $95.04    52 Week High $71.92 
Open $95.15    52 Week Low $54.62 
Day High $95.33    P/E 42.11 
Day Low $93.90    EPS $2.25 
Volume 669,572       

PowerShares QQQ Trust, Series 1 (NASDAQ: QQQ) Delayed: 716.42 -1.94 (0.27%)
Previous Close $718.36    52 Week High $119.66 
Open $716.40    52 Week Low $94.84 
Day High $719.70    P/E N/A 
Day Low $714.02    EPS $0.00 
Volume 15,983,765       

S&P DEP RECEIPTS (NYSE: SPY) Delayed: 762.59 -3.37 (0.44%)
Previous Close $765.96    52 Week High $219.60 
Open $764.08    52 Week Low $181.02 
Day High $764.47    P/E N/A 
Day Low $760.94    EPS $0.00 
Volume 14,115,812