Canada's benchmark S&P/TSX dropped 179.91 points, or 2.58%, to 6,535.44.
European stock markets finished with sharp losses amid disappointing earnings outlooks in the U.S. that renew concerns about the economic recovery. In London, the Financial Times-Stock Exchange 100 index finished down 199.00 points, or 4.63%, to 4,098.30. France's CAC 40 shed 189.67 points, or 5.40%, to 3,324.04. Germany's DAX index faltered 208.87 points, or 5.09%, to 3,891.88.
Asian markets ended lower. In Japan, the Nikkei 225 index fell 295.90 points or 2.82%, to 10,202.36. In Hong Kong, the benchmark Hang Seng index lost 127.09 points, or 1.22%, to close at 10,325.46.