* The Toronto Stock Exchange's TSX falls 0.33 percent to 17,857.81
* Leading the index were BlackBerry Ltd BB.TO , up 10.0%, Ballard Power Systems Inc BLDP.TO , up 4.8%, and First Majestic Silver Corp FR.TO , higher by 4.2%.
* Lagging shares were Vermilion Energy Inc VET.TO , down 5.2%, Crescent Point Energy Corp CPG.TO , down 4.3%, and Aurora Cannabis Inc ACB.TO , 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 (TSX:BB) Ltd BB.TO , Cenovus Energy Inc CVE.TO and Crescent Point Energy Corp CPG.TO .
* The TSX's energy group .SPTTEN fell 1.92 points, or 2.0%, while the financials sector .SPTTFS slipped 2.21 points, or 0.7%.
* West Texas Intermediate crude futures CLc1 fell 2.01%, or $1.07, to $52.06 a barrel. Brent crude LCOc1 fell 1.6%, or $0.9, to $55.2 O/R
* The TSX is up 2.4% for the year.