* The Toronto Stock Exchange's TSX falls 0.43 percent to 18,874.01
* Leading the index were Rogers Communications Inc
* Lagging shares were Aphria Inc, down 9.3%, Aurora Cannabis Inc, down 6.8%, and First Quantum Minerals Ltd, lower by 6.1%.
* On the TSX 96 issues rose and 118 fell as a 0.8-to-1 ratio favored decliners. There were 19 new highs and no new lows, with total volume of 264.0 million shares.
* The most heavily traded shares by volume were Canadian Natural Resources Ltd, Barrick Gold Corp and Suncor Energy Inc.
* The TSX's energy group fell 4.00 points, or 3.2%, while the financials sector climbed 0.33 points, or 0.1%.
* West Texas Intermediate crude futures fell 0.69%, or $0.45, to $64.94 a barrel. Brent crude fell 0.49%, or $0.34, to $68.54 [O/R]
* The TSX is up 8.3% for the year.