CANADA STOCKS-TSX rises at open as energy stocks support

TORONTO, June 26 (Reuters) - Canada's main stock index opened higher on Monday, helped in part by advances in financial and energy stocks, but gains were offset by a firm retreat in the materials group as gold prices fell.

The Toronto Stock Exchange's S&P/TSX composite index rose 17.07 points, or 0.11 percent, to 15,336.63 shortly after the open.

Of the index's 10 main groups, nine were in positive territory. (Reporting by Solarina Ho; Editing by Jeffrey Benkoe)