Big Tech tumbles as results set off alarm bells

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PowerShares QQQ Trust, Series 1 (NASDAQ: QQQ) Delayed: 711.74 --0 (-0%)
Previous Close $711.74    52 Week High $119.66 
Open $711.74    52 Week Low $94.84 
Day High $711.74    P/E N/A 
Day Low $711.74    EPS $0.00 
Volume 374,337