A specialist trader works at his post on the floor of the New York Stock Exchange Oct. 5. A specialist trader works at his post on the floor of the New York Stock Exchange Oct. 5. Canada's main stock index gained 1.6 per cent on Monday, with the energy sector invigorated by heavyweight Suncor Energy Inc's hostile bid for Canadian Oil Sands Ltd, a rival and co-producer. The Toronto Stock Exchange's S&P/TSX composite index closed up 212.46 points, or 1.59 per cent, at 13,552.20.