- The Toronto Stock Exchange's TSX falls  1.27 percent to 16,447.66

- Leading the index were Semafo Inc , up 4.0 percent, Yamana Gold Inc , up 2.9 percent, and Detour Gold Corp , higher by 2.8 percent.

- Lagging shares were Bombardier Inc , down 10.6 percent, Bausch Health Companies Inc, down 10.0 percent, and Hudbay Minerals Inc , lower by 8.8 percent.

- On the TSX 46 issues rose and 185 fell as a 0.2-to-1 ratio favored decliners. There were 11 new highs and 9 new lows, with total volume of 224.8 million shares.

- The most heavily traded shares by volume were Aurora Cannabis Inc , Bombardier Inc  and Encana Corp.

- The TSX's energy group <.SPTTEN> fell 4.42 points, or 3.2 percent, while the financials sector <.SPTTFS> slipped 4.23 points, or 1.3 percent.

- West Texas Intermediate crude futures fell 0.87 percent, or $0.47, to $53.6 a barrel. Brent crude  fell 0.52 percent, or $0.31, to $58.94 [O/R]

- The TSX is up 14.8 percent for the year.