On the markets at 9:50 a.m. (ET):
In Toronto, the S&P/TSX composite index was up 23.18 points to 20,829.81.
The Dow Jones industrial average was down 269.09 points to 35,100.00.
The Standard & Poor's 500 index was down 15.40 points to 4,520.03.
The Nasdaq composite index was down 29.40 points to 15,344.93.
The Canadian dollar was trading at 78.88 cents US.
The Canadian Press