TORONTO, Sept 26 (Reuters) - Canada's main stock index settled lower on Monday in a broad retreat as investors took a cautious turn ahead of the first U.S. presidential debate, with energy shares slightly lower despite a jump in crude oil prices.
The Toronto Stock Exchange's S&P/TSX composite index .GSPTSE unofficially closed down 78.47 points, or 0.53 percent, at 14,619.46. Nine of its 10 main sectors fell.