Some of the most active companies traded Friday on the Toronto Stock Exchange:Aurora Cannabis Inc. (TSX:ACB). Health care. Up 50 cents, or 7.42 per cent, to $7.24 on 19.8 million shares. Acerus Pharmaceuticals Corp. (TSX:ASP). Drug manufacturer. Up 6.5 cents, or 25.49 per cent, to 32 cents on 4.1 million shares. Husky Energy Inc. (TSX:HSE). Oil and gas. Down four cents, or 0.26 per cent, to $15.42 on 3.7 million shares. Baytex Energy Corp. (TSX:BTE). Oil and gas.