S&P/TSX composite down more than 250 points, U.S. stock markets also lower

A man walks past a building in Toronto that used to house the Toronto Stock Exchange on August 18 2011.THE CANADIAN PRESS/Aaron Vincent Elkaim

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TORONTO - Canada's main stock index finished narrowly in positive territory, reversing losses from earlier in the day, while U.S. markets posted mixed results. 

The S&P/TSX composite index was up 43.60 points at 29,912.19.       

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