Specialist Peter Giacchi looks at the price of Knight at his post on the floor of the New York Stock Exchange, Wednesday, Aug. 1, 2012. Traders' attention was diverted to unusually sharp moves in a ... more 
Specialist Peter Giacchi looks at the price of Knight at his post on the floor of the New York Stock Exchange, Wednesday, Aug. 1, 2012. Traders' attention was diverted to unusually sharp moves in a number of stocks shortly after the opening bell. The New York Stock Exchange says it is reviewing trades in 140 stocks. Trading volume was unusually high in the first half-hour of trading, and some investors suspected technical glitches. (AP Photo/Richard Drew) less 
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Associated Press | Photo By Richard Drew
Wed, Aug 1, 2012 7:00 PM EDT