Tech-led selloff drives record volume in NDX options

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PowerShares QQQ Trust, Series 1 (NASDAQ: QQQ) Delayed: 683.55 +21.82 (3.30%)
Previous Close $661.73    52 Week High $119.66 
Open $674.76    52 Week Low $94.84 
Day High $685.12    P/E N/A 
Day Low $673.30    EPS $0.00 
Volume 66,702,108