North American stocks were lower after the blacklisting of some Chinese technology companies by the U.S. raised investor pessimism ahead of trade talks this week.
The S&P/TSX composite index closed down 127.80 points at 16,293.95.
In New York, the Dow Jones industrial average was down 313.98 points at 26,164.04. The S&P 500 index was down 45.73 points at 2,893.06, while the Nasdaq composite was down 132.52 points at 7,823.78.
The Canadian dollar traded for an average of US75.06¢ compared with an average of US75.15¢ on Monday.
The November crude contract was down US12¢ at US$52.63 per barrel and the November natural gas contract was down US1.5¢ at US$2.29 per mmBTU.
The December gold contract was down US50¢ at US$1,503.90 an ounce and the December copper contract was down US0.85¢ at US$2.57 a pound.