Canada's main stock index posted its highest close in five weeks Wednesday due to gains of heavyweight financial and energy sector. Eight of the index's 10 main sectors ended higher.

The Toronto Stock Exchange's benchmark Standard & Poor's/TSX Composite Index rose 63.53 points, or 0.42 percent, to 15,265.63, the highest since June 28.

The financials sector rose 0.5 percent. Shares of Genworth MI Canada Inc jumped 3.5 percent to 37.48 Canadian dollars.

The country's biggest banks were also among the most influential gainers, with Royal Bank of Canada up 0.8 percent to 94.12 Canadian dollars.

Higher oil prices helped boost energy shares. Top gainers included oil services company Gibson Energy Inc, which surged 5.8 percent to 17.26 Canadian dollars.

The Canadian dollar dropped 0.15 cents to 79.53 U.S. cents while oil prices gained 35 cents to 49.51 U.S. dollars a barrel and gold prices slid seven dollars to 1,272.40 U.S. dollars an ounce.