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

Toronto Stock Exchange (12,931.40 up 97.29 points):

B2Gold Corp. (TSX:BTO). Miner. Up 33 cents, or 12.45 per cent, at $2.98 on 8.11 million shares. The gold sector led all subgroups on the main index, rising 8.42 per cent to 194.41 points.

Iamgold Corp. (TSX:IMG). Miner. Up 54 cents, or 9.78 per cent, at $6.06 on 7.03 million shares.

Bombardier Inc. (TSX:BBD.B). Plane and train maker. Down 16 cents, or 3.23 per cent, at $4.80 on 6.92 million shares.

Osisko Mining Corp. (TSX:OSK). Miner. Up 50 cents, or 9.71 per cent, at $5.65 on 6.83 million shares.

Eldorado Gold Corp. (TSX:ELD). Miner. Up 57 cents, or 7.63 per cent, at $8.04 on 6.82 million shares.

Toronto Venture Exchange (952.81 up 17.39 points):

Columbus Gold Corp. (TSXV:CGT). Mine exploration. Up nine cents, or 30 per cent, at 39 cents on 5.93 million shares. The Vancouver-based company granted the right to a 50.01 per cent interest in certain licences at its Paul Isnard gold project in French Guiana to gold producer Nord Gold N.V.

Caribou King Resources Ltd. (TSXV:CKR). Mine exploration. Unchanged at eight cents, or 5.37 million shares. The junior miner's geologist said Wednesday the graphitic marble block discovered at its Calumet prospect in Quebec "shows the high potential of the area and also reveals that more graphite mineralization can be present in the immediate area."

Companies reporting major news:

BlackBerry Ltd. (TSX:BB). Wireless technology. Down 24 cents, or 2.21 per cent, at $10.64 on 3.54 million shares. The Wall Street Journal is reporting that the struggling smartphone maker could lay off as many as 5,000 employees in the coming months in an effort to return the company to profitability. It also launched, with little fanfare, a new smartphone with a five-inch screen.

Labrador Iron Mines Holdings Ltd. (TSX:LIM). Miner. Up two cents, or 4.26 per cent, at 49 cents on 340,225 shares. The Toronto-based company and a subsidiary of India's Tata industrial group have formed a joint venture that will develop an ore deposit and new mine in the Schefferville region of the Labrador Trough.

News from © The Canadian Press, 2013