On the markets at 9:50 a.m. (ET):In Toronto, the S&P/TSX composite index is up 135.22 points to 15,284.36.The Dow Jones industrial average gained 139.94 points to 21,549.01.The Standard & Poor’s 500 index added 16.71 pointd to 2,442.24.The Nasdaq composite index climbed 50.74 points to 6,244.05.The Canadian dollar was trading at 77.41 cents US, up from Tuesday’s average price of 77.40 cents US.