TORONTO, Jan 26 (Reuters) - Canada's main stock index slipped marginally at the open on Thursday, weighed down by materials stocks as prices for gold and a string of base metals fell while energy and telecom stocks gained.
The Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 16.29 points, or 0.10 percent, at 15,627.55 shortly after the open.