S&P/TSX composite down more than 70 points, U.S. stock markets in negative territory

A Toronto Stock Exchange ticker is seen at The Exchange Tower in Toronto on Thursday, Aug. 18, 2011. THE CANADIAN PRESS/Aaron Vincent Elkaim

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TORONTO - Canada's main stock index was lower in late-morning trading on Wednesday amid broad-based losses, while U.S. markets also moved lower. 

The S&P/TSX composite index was down 82.69 points at 31,784.42.     

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