Some of the most active companies traded Wednesday on the Toronto Stock Exchange:Sherritt International Corp. (TSX:S). Miner. Down 15 cents, or 10.34 per cent, to $1.30 on 22.5 million shares. Aurora Cannabis Inc. (TSX:ACB). Health care. Up 41 cents, or 3.44 per cent, to $12.32 on 12.4 million shares. NextSource Materials Inc. (TSX:NEXT). Miner. Down half-a-cent, or 3.57 per cent, to 13.5 cents on 12.3 million shares. Bombardier Inc. (TSX:BBD.B). Aerospace, rail equipment.