Trader F. Hill Creekmore, center, works on the floor of the New York Stock Exchange Monday, Oct. 22, 2012. A weak forecast from heavy equipment maker Caterpillar and other poor earnings results weighed on the U.S. stock market in early trading. (AP Photo/Richard Drew)

Associated Press
Trader F. Hill Creekmore, center, works on the floor of the New York Stock Exchange Monday, Oct. 22, 2012. A weak forecast from heavy equipment maker Caterpillar and other poor earnings results weighed on the U.S. stock market in early trading. (AP Photo/Richard Drew)
Trader F. Hill Creekmore, center, works on the floor of the New York Stock Exchange Monday, Oct. 22, 2012. A weak forecast from heavy equipment maker Caterpillar and other poor earnings results weighed on the U.S. stock market in early trading. (AP Photo/Richard Drew)
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