Some of the most active companies traded Tuesday on the Toronto Stock Exchange:Toronto Stock Exchange (16,330.67, up 79.92 points)Aurora Cannabis Inc. (TSX:ACB). Healthcare. Down 58 cents, or 9.8 per cent, to $5.34 on 12.8 million shares.Bombardier Inc. (TSX:BBD.B). Aerospace, rail equipment. Up 15 cents or 3.31 per cent, to $4.68 on 9.4 million shares.Aphria Inc. (TSX:APH). Healthcare. Down 92 cents, or 9.54 per cent, to $8.72 on 5.69 million shares.Canopy Growth Corp. (TSX:WEED). Healthcare. Down $2.89, or 8.25 per cent, to $32.15 on 5.08 million shares.Cenovus Energy Inc. (TSX:CVE). Oil and gas. Down 50 cents, or 3.85 per cent, to $12.50 on 4.62 million shares.Baytex Energy Corp. (TSX:BTE). Oil and gas. Down 15 cents, or 3.85 per cent, to $3.75 on 4.13 million shares.Companies reporting major news:Hydro One Ltd. (TSX:H). Utilities. Up 23 cents, or 1.2 per cent, to $19.33 on 2.43 million shares. The partially privatized utility named the 10 new members of its board, just over a month after the previous 14-member board resigned en masse following pressure from the newly-elected Ontario provincial government. Former CIBC executive Tom Woods will serve as the interim board chair until the position can be filled permanently.