TORONTO, Aug 26 (Reuters) - Canada's main stock index rose on Friday as higher metal prices supported the materials group ahead of a speech by U.S. Federal Reserve Chair Janet Yellen that could give a clearer picture on the U.S. interest rate outlook.
The Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was up 38.50 points, or 0.26 percent, at 14,669.22, shortly after the open. Eight of the index's 10 main groups were higher.