Most actively traded companies on the TSX, TSX Venture Exchange markets

TORONTO - Some of the most active companies traded Monday on the Toronto Stock Exchange and the TSX Venture Exchange:

Toronto Stock Exchange (13,186.53 up 50.44 points):

Bombardier Inc. (TSX:BBD.B). Transportation. Up 22 cents, or 4.33 per cent, to $5.30 on 15.5 million shares. Shares closed at a 52-week high after it said Flexjet has placed firm orders for 30 more of it Learjet 85 aircraft.

Athabasca Oil Corp. (TSX:ATH). Oil and gas. Down 18 cents, or 2.87 per cent, to $6.09 on 5.4 million shares. The November crude contract on the New York Mercantile Exchange fell $1.59 to US$99.22 a barrel — its lowest level since July 1 — amid rising supplies of crude and lower demand. The energy sector declined 0.28 per cent.

Carpathian Gold Inc. (TSX:CPN). Miner. Up 2.5 cents, or 41.67 per cent, to 8.5 cents on 4.7 million shares.

Air Canada (TSX:AC.B). Airline. Up 11 cents, or 2.12 per cent, to $5.30 on 3.8 million shares.

ProMetic Life Sciences Inc. (TSX:PLI). Health care. Up 11 cents, or 10.68 per cent, to $1.14 on 3.96 million shares.

Twin Butte Energy Ltd. (TSX:TBE). Oil and gas. Up three cents, or 1.32 per cent, to $2.31 on 2.7 million shares.

Toronto Venture Exchange (959.82 up 8.85 points):

Loyalist Group Ltd. (TSXV:LOY). Education. Down 1.5 cents, or 3.06 per cent, to 47.5 cents on 4.1 million shares.

Auriga Gold Corp. (TSXV:AIA). Down half a cent, or 33.33 per cent, to one cent on 3.7 million shares.

Companies reporting major news:

BlackBerry (TSX:BB), Wireless communications. Down 12 cents, or 1.39 per cent, to $8.52 on 948,939 shares. The smartphone maker says its popular instant messaging service is now ready for Apple's iPhone and devices using the Android operating system, following a technical glitch that delayed the launch by about a month.

Maple Leaf Foods (TSX:MFI). Up $1.33, or 10 per cent, to $14.63 on 1.8 million shares. The company is considering selling its bakery business in an effort to get the most out of the operations, and that could include the sale of its 90 per cent interest in Canada Bread (TSX:CBY) (up $4.92, or 8.03 per cent, to $66.17). Chief executive Michael McCain said Monday that while the company hasn't decided the fate of the bread assets, a sale is on the short list of possibilities.