Some of the most active companies traded Monday on the Toronto Stock Exchange:

Toronto Stock Exchange (15,482.56, down 49.02 points):

B2Gold Corp. (TSX:BTO). Miner. Down seven cents, or 2.99 per cent, to $2.27 on 7.4 million shares.

Maple Leaf Foods Inc. (TSX:MFI). Processed food. Down 45 cents, or 2.21 per cent, to $19.87 on 7.2 million shares.

Energizer Resources Inc. (TSX:EGZ). Miner. Up three cents, or 12.24 per cent, to 27.5 cents on 6.1 million shares.

Semafo Inc. (TSX:SMF). Miner. Down 24 cents, or 5.38 per cent, to $4.22 on 5.8 million shares.

Manulife Financial Corp. (TSX:MFC). Insurance. Down 20 cents, or 0.90 per cent, to $22.04 on 5.6 million shares.

Air Canada (TSX:AC.B). Airline. Up 57 cents, or 6.72 per cent, to $9.05 on 5.5 million shares. Air Canada is expected to join rival WestJet in charging passengers for a first check bag on flights within Canada. The company is also moving to begin contract negotiations early with its pilots in hopes of avoiding the acrimony that characterized the last round of talks that ended with an arbitrated settlement in 2012.

Companies reporting major news:

Canadian Imperial Bank of Commerce (TSX:CM). Bank. Down 15 cents, or 0.14 per cent, to $106.86 on 688,139 shares. The bank has announced a major reorganization of senior management, as incoming CEO Victor Dodig shuffled a number of roles and announced the exit of two executives. Dodig officially took the leadership post on Monday and immediately began to craft his vision of the bank.

Canadian Natural Resources Ltd. (TSX:CNQ). Oil and gas. Up 10 cents, or 0.22 per cent, to $45.41 on 2.8 million shaes. The company has been given the go-ahead to resume work at part of an oilsands project in eastern Alberta where a bitumen-water mixture was found oozing to the surface last year. But CNRL will be using a different extraction technique at its Primrose East property that it says will make further leaks less likely.

WestJet (TSX:WJA). Airline. Up $1.79, or 5.81 per cent, at $32.58 on volume of 1.28 million shares. The Calgary-based airline annouonced it will soon begining chargin some economy fare customers a feww of between $25 and $29.50 depending on provincial taxes to check their first bag on flights within Canada and to the United States.

News from © The Canadian Press, 2014