* The Toronto Stock Exchange's TSX falls 0.26 percent to 16,954.84
* Leading the index were Gran Tierra Energy Inc GTE.TO , up 5.4%, BlackBerry Ltd BB.TO , up 5.2%, and Canada Goose Holdings Inc GOOS.TO , higher by 4.8%.
* Lagging shares were Hexo Corp HEXO.TO , down 15.6%, Aurora Cannabis Inc ACB.TO , down 13.0%, and Canopy Growth Corp WEED.TO , lower by 9.3%.
* On the TSX 112 issues rose and 116 fell as a 1-to-1 ratio favored decliners. There were 12 new highs and no new lows, with total volume of 199.3 million shares.
* The most heavily traded shares by volume were Aurora Cannabis Inc ACB.TO , Husky Energy Inc HSE.TO and Manulife Financial Corp MFC.TO .
* The TSX's energy group .SPTTEN fell 0.93 points, or 0.7%, while the financials sector .SPTTFS slipped 0.19 points, or 0.1%.
* West Texas Intermediate crude futures CLc1 fell 1.06%, or $0.62, to $57.96 a barrel. Brent crude LCOc1 fell 0.58% , or $0.37, to $63.6 O/R
* The TSX is up 18.4% for the year.