TORONTO, Oct 30 (Reuters) - Canada's main stock index turned positive shortly after the open on Monday as energy and material stocks lift, while Canopy Growth Corp WEED.TO surged more than 16 percent on Constellation Brands Inc (NYSE:STZ) STZ.N stake.
The Toronto Stock Exchange's S&P/TSX composite index .GSPTSE rose 23.03 points, or 0.14 percent, to 15,976.54.
Eight of the index's 10 primary sectors advanced.