By John Tilak TORONTO (Reuters) - Canada's main stock index slipped on Monday for a third straight session as signs of economic weakness emerged from different parts of the globe, weighing on shares of financial and industrial companies. Offsetting some of the weakness, BlackBerry Ltd shares jumped 5.2 percent to C$8.51 after the smartphone maker said it hired a former Sony Ericsson executive to head its loss-making devices business. "We see some tepidness and weakness at the start of the year," said Youssef Zohny, portfolio manager at Stenner Investment Partners, a unit of Richardson GMP, who noted that investors were also cautious ahead of U.S. jobs data that will be released on Friday. The Toronto Stock Exchange's S&P/TSX composite index closed down 53.32 points, or 0.39 percent, at 13,495.54, after earlier touching 13,473.23, its lowest level since December 24.



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