TORONTO — Canada's main stock index ticked lower Thursday after giving back gains from earlier in the day, while U.S. markets also fell. The S&P/TSX composite index closed down 8.97 points at 25,060.24. In New York, the Dow Jones industrial average was down 11.31 points at 41,953.32. The S&P 500 index was down 12.40 points […]