S&P/TSX composite up nearly 80 points, while U.S. stock markets were mixed

The TMX Group logo, home of the TSX, is shown in Toronto on June 28, 2013. THE CANADIAN PRESS/Aaron Vincent Elkaim

TORONTO - Canada's main stock index finished lower on Tuesday in a sharp reversal after being in positive territory for most of the day, while U.S. markets also lost ground. 聽聽

Tech stocks moved further into the red later in the afternoon, offsetting gains in the basic materials and energy sectors, with shares of Shopify Inc. finishing the day 2.45 per cent lower.

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