Some of the most active companies traded Thursday on the Toronto Stock Exchange and the TSX Venture Exchange:

Toronto Stock Exchange (12,233.95 up 21.53 points):

Air Canada (TSX:AC.B). Airliner. Up seven cents, or five per cent, at $1.47 on 12,750,714 shares.

Canadian Natural Resources Ltd. (TSX:CNQ). Oil and gas. Up 21 cents, or 0.70 per cent, at $30.01 on 5,251,030 shares. The energy sector rose 0.57 per cent to 258.01 points, as the price of crude oil for November contract increased 82 cents US to $92.07 per barrel on the New York Mercantile Exchange.

Kinross Gold Corp. (TSX:K). Miner. Down 16 cents, or 1.56 per cent, at $10.09 on 5,042,204 shares. On Wednesday, the Toronto-based miner's chief financial officer quit to pursue other interests. Kinross launched a company-wide cost reduction effort in August to improve its lagging performance.

Canacol Energy Ltd. (TSX:CNE). Junior energy. Down a penny, or 2.38 per cent, at 41 cents on 4,686,014 shares. The Calgary-based company's stock closed at its lowest level since late 2009.

Teck Resources Ltd. (TSX:TCK.B). Miner. Up 49 cents, or 1.64 per cent, at $30.39 on 4,128,366 shares. The Vancouver-based company appointed Edward Dowling to its Board of Directors earlier in the week.

Bombardier Inc. (TSX:BBD.B). Transportation equipment. Up a penny, or 0.27 per cent, at $3.68 on 3,794,708 shares.

TSX Venture Exchange (1,299.94 down 2.21 points):