CANADA STOCKS-TSX opens lower as commodities weigh
TORONTO, May 15 (Reuters) - Canada's main stock index opened lower on Thursday as lower commodity prices helped weaken shares of energy and materials companies. The Toronto Stock Exchange's S&P/TSX composite index was down 22.71 points, or 0.15 percent, at 14,651.02 shortly after the open. (Reporting by John Tilak; Editing by James Dalgleish)
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