TORONTO - Some of the most active companies traded Tuesday on the Toronto Stock Exchange:

Toronto Stock Exchange (16,834.75, up83.44 points.)

Encana Corp. (TSX:ECA). Energy. Down 48 cents, or 6.53 per cent, to $6.87 on 15.8 million shares.

Baytex Energy Corp. (TSX:BTE). Energy. Down four cents, or 1.78 per cent, to $2.21 on 13 million shares.

Crescent Point Energy Corp. (TSX:CPG). Energy. Down 22 cents, or 3.51 per cent, to $6.05 on 8.4 million shares.

Aurora Cannabis Inc. (TSX:ACB). Health care. Down 27 cents, or 3.72 per cent, to $6.99 on 8.1 million shares.

Canadian Natural Resources Ltd. (TSX:CNQ). Energy. Down $1.12, or 2.95 per cent, to $36.85 on 8 million shares.

Kinross Gold Corp. (TSX:K). Materials. Up 35 cents, or 5.38 per cent, to $6.86 on 5.8 million shares.

Companies in the news:

CannTrust Holdings Inc. (TSX:TRST). Down 29 cents or 14.6 per cent to $1.70. CannTrust Holdings Inc. says it received a notice of licence suspension from Health Canada, which has been investigating the cannabis company for allegedly cultivating pot in unlicensed rooms. The Vaughan, Ont.-based company says Health Canada has suspended its authority to sell cannabis or to produce cannabis, other than cultivating and harvesting.

Magna International. (TSX:MG). Unchanged at $71.32. Canadian manufacturers say they are keeping a close eye on the strike at General Motors in the U.S. as workers picket for a second day. More than 48,000 unionized workers in the U.S. walked off the job Monday over issues such as wages, health care and job security in the first strike at the U.S. manufacturer in more than a decade. Magna International spokesman Scott Worden said in a statement that the auto parts maker was in a "wait-and-see" mode and declined to outline impacts so far.

Canopy Growth Corp. (TSX:WEED). Up 59 cents or 1.6 per cent to $37.50. Canopy Growth Corp. expects to complete its search for a new chief executive officer by the end of the calendar year, its chairman said Tuesday during its first annual meeting without co-founder Bruce Linton at the helm. Chairman John Bell commended Linton on his hefty contributions to the Smiths Falls, Ont.-based cannabis producer. Meanwhile, Linton also on Tuesday, announced his next moves will include advisory roles including at U.S.-based dispensary company Gage Cannabis Co. and Toronto-based Mind Medicine Inc., which is focused on psychedelic-based medicines.

Imperial Oil Ltd. (TSX:IMO). Up 26 cents to $36.57. Imperial Oil Ltd. announced Tuesday that chairman and chief executive Rich Kruger will step down after leading the Calgary-based company, which is about 70 per cent owned by Texas-based Exxon Mobil Corp., since 2013. In his role, Kruger complained publicly often about red tape, focusing in recent years on how long it took to win Alberta regulatory approval for the two-phase, 150,000-barrel-per-day Aspen thermal oilsands project, first proposed in 2013. Analysts said they expect little change in direction under Brad Corson, a 36-year Exxon employee who becomes president immediately and becomes chairman and CEO on Jan. 1.

Shopify Inc. (TSX:SHOP).Down $11.81 or 2.6 per cent to $435.67. Shopify Inc. says its e-commerce and retail platform has been given new features to help U.S. merchants sell hemp and hemp-derived cannabidiol products where permitted by law. The announcement follows last year's passage of U.S. federal legislation that removed hemp from the Controlled Substances Act, which still covers cannabis products. Hemp may contain CBD, a compound with potential medicinal qualities, but without significant levels of THC — a compound in cannabis that produces a high. Shopify says the new features will help its clients tap into a growing regulated industry in the U.S. by providing tools for marketing, payments and shipping products.

The Canadian Press. All rights reserved.