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

Toronto Stock Exchange (12,608.82 down 33.15 points):

Research In Motion (TSX:RIM). Wireless technology. Up 28 cents, or 1.96 per cent, at $14.55 on 9,854,952 shares. The surging BlackBerry maker's stock traded as high as $15.14 at one point amid news that the Visa credit card system had approved RIM's method for handling secure mobile payments.

B2Gold Corp. (TSX:BTO). Miner. Up eight cents, or 2.06 per cent, at $3.97 on 9,015,946 shares. The Supreme Court of Western Australia has approved the company's merger with CGA Mining.

Bombardier Inc. (TSX:BBD.B). Transportation equipment. Up two cents, or 0.50 per cent, at $4.04 on 7,367,057 shares.

Labrador Iron Mines Holdings Ltd. (TSX:LIM). Miner. Down 17 cents, or 13.08 per cent, at $1.13 on 6,891,577 shares. CIBC lowered its rating of the iron ore producer's stock to sector perform from outperform.

Uranium One Inc. (TSX:UUU). Miner. Unchanged at $2.78 on 5,411,695 shares. Uranium One's Russian majority shareholder, ARMZ, is hoping to take the company private in a friendly, $1.3-billion deal.

CGA Mining Ltd. (TSX:CGA). Miner. Up eight cents, or 2.80 per cent, at $2.94 on 5,005,912 shares. The stock closed higher as its merger with B2Gold got approval in Australia, where CGA is based.

RMP Energy Inc. (TSX:RMP). Oil and gas. Down 15 cents, or 4.31 per cent, at $3.33 on 4,780,222 shares. The Calgary-based company lost some of its gains from Tuesday when the stock closed at its highest level ever following news of record fourth-quarter production.

TSX Venture Exchange (1,230.20 down 1.59 points):

ArPetrol Ltd. (TSXV:RPT). Oil and gas developer. Unchanged at one cent on 11,981,350 shares.

Fission Energy Corp. (TSXV:FIS). Up 14 cents, or 21.88 per cent, at 78 cents on 10,114,365 shares. Toronto-Denison Mines (TSX:DML) signed a deal to buy Fission Energy in a stock-swap deal valued at about $70 million that will see the company spin out some of Fission's assets to a new company. Denison Mines' stock increased two cents, or 1.37 per cent, to $1.48 on 1,925,203 shares.

Companies reporting major news:

Magna International Inc. (TSX:MG). Auto parts. Up 96 cents, or 1.88 per cent, at $52.14 on 784,457 shares. The auto parts giant says it expects between US$31.3 billion and US$32.7 billion of sales globally this year. About half of the 2013 total will come from the sale of parts to North American manufacturing operations.

Pizza Pizza Royalty Corp. (TSX:PZA). Restaurant chain. Up eight cents, or 0.79 per cent, at $10.27 on 68,170 shares. Pizza Pizza is hiking its monthly dividend by 4.2 per cent to 6.25 cents from six cents, effective with the January payout. On an annual basis, the dividend will increase to 75 cents from 72 cents per share.

News from © The Canadian Press, 2013