* The Toronto Stock Exchange's TSX falls 2.71 percent to 15,586.57 

* Leading the index were FirstService Corp , up 1.8%, Ritchie Bros. Auctioneers Inc , up 0.8%, and WPT Industrial Real Estate Investment Trust , higher by 0.6%.

* Lagging shares were Silvercorp Metals Inc , down 11.1%, Fortuna Silver Mines Inc, down 10.6%, and Kinross Gold Corp, lower by 9.5%.

* On the TSX 7 issues rose and 216 fell as a 0-to-1 ratio favored decliners. There were no and 2 new lows, with total volume of 277.5 million shares.

* The most heavily traded shares by volume were Husky Energy Inc , Cenovus Energy Inc  and Barrick Gold Corp.

* The TSX's energy group  fell 2.59 points, or 3.9%, while the financials sector slipped 6.18 points, or 2.3%.

* West Texas Intermediate crude futures fell 5.53%, or $2.19, to $37.38 a barrel. Brent crude  fell 5.19%, or $2.14, to $39.06.

* The TSX is off 8.7% for the year.