CHICAGO, IL - JULY 30: A trader signals an offer in the Standard & Poor's 500 stock index options pit at the Chicago Board Options Exchange (CBOE) on July 30, 2014 in Chicago, Illinois. Investors are looking for guidance on the overall health of the economy and are anticipating the Fed will announce another reduction in its monthly bond purchases when it releases its policy statement this afternoon. (Photo by Scott Olson/Getty Images)
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