TSX falls 0.33% to 17,857.81

* The Toronto Stock Exchange's TSX falls 0.33 percent to 17,857.81 

* Leading the index were BlackBerry Ltd , up 10.0%, Ballard Power Systems Inc​, up 4.8%, and First Majestic Silver Corp​, higher by 4.2%.

* Lagging shares were Vermilion Energy Inc​​, down 5.2%, Crescent Point Energy Corp​, down 4.3%, and Aurora Cannabis Inc​, lower by 3.9%.

* On the TSX 70 issues rose and 149 fell as a 0.5-to-1 ratio favored decliners. There were 2 new highs and no new lows, with total volume of 147.8 million shares.

* The most heavily traded shares by volume were Blackberry Ltd, Cenovus Energy Inc and Crescent Point Energy Corp.

* The TSX's energy group fell 1.92 points, or 2.0%, while the financials sector slipped 2.21 points, or 0.7%.

* West Texas Intermediate crude futures fell 2.01%, or $1.07, to $52.06 a barrel. Brent crude  fell 1.6%, or $0.9, to $55.2 [O/R]

* The TSX is up 2.4% for the year.