Canada's main stock index soared to two-week high Wednesday, on strength of health-care and tech issues and upbeat sentiment about Canadian economic growth.

The Toronto Stock Exchange's benchmark Standard & Poor's/TSX Composite Index rose 50.43 points, or 0.33 percent, to finish the day at 15,133.13.

Of the index's 10 main groups, six were positive. Advancing issues outnumbered declining ones by 164 to 80.

The healthcare group rose two percent while the technology group jumped 1.3 percent, with Shopify Inc SHOP.TO jumping 4.7 percent to 136.82 Canadian dollars.

National Bank NA.TO, the latest Canadian bank to report better-than-forecast quarterly results, was one of the biggest positive drivers of the index. Shares rose 3.4 percent to 57.29 Canadian dollars. The overall financials group gained 0.3 percent.

The industrials group gained one percent as Canadian National Railway CNR.TO climbed 1.2 percent to 100.64 Canadian dollars and Canadian Pacific Railway CP.TO rose 1.1 percent to 194.55 Canadian dollars.

Oil and gas groupcompanies fell 0.2 percent in a volatile session as lower oil prices CLc1 LCOc1 weighed. Canadian Natural Resources CNQ.TO dropped 1.6 percent 38.36 Canadian dollars .

The Canadian dollar tumbled 0.7 cents to 0.79.23 U.S. dollar while oil prices fell 49 cents to 45.95 U.S. dollars a barrel and gold prices fell 5.20 to 1,313.70 U.S. dollars an ounce.