TORONTO, July 29 (Reuters) - Toronto's main stock index opened lower on Wednesday, weighed down by a slide in prices for key Canadian exports such as oil and gold.
The S&P/TSX composite index .GSPTSE was down 90.64 points, or 0.86 percent, at 10,479.90. Eight of the 10 TSX sectors were lower, led by a 1.7 percent drop in the weighty energy group. (Reporting by Frank Pingue; editing by Peter Galloway)