Big Tech tumbles as results set off alarm bells

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PowerShares QQQ Trust, Series 1 (NASDAQ: QQQ) Delayed: 725.20 --0 (-0%)
Previous Close $725.20    52 Week High $119.66 
Open $725.20    52 Week Low $94.84 
Day High $725.20    P/E N/A 
Day Low $725.20    EPS $0.00 
Volume 655,932