Most actively traded companies on the TSX

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

Toronto Stock Exchange (13,868.35, up 221.09 points):

Bombardier Inc. (TSX:BBD.B). Aerospace, rail equipment. Down 23 cents, or 12.99 per cent, to $1.54 on 34.1 million shares.

Canadian Natural Resources Ltd. (TSX:CNQ). Oil and gas. Up $1.68, or 5.69 per cent, to $31.23 on 11.1 million shares.

Penn West Petroleum Ltd. (TSX:PWT). Oil and gas. Up four cents, or 3.17 per cent, to $1.30 on 10.8 million shares.

First Quantum Minerals Ltd. (TSX:FM). Miner. Up $1.36, or 18.16 per cent, to $8.85 on 10.5 million shares.

Baytex Energy Corp. (TSX:BTE). Oil and gas. Up 37 cents, or 6.68 per cent, to $5.91 on 10 million shares.

Teck Resources Ltd. (TSX:TCK.B). Miner. Up $1.11, or 14.27 per cent, to $8.89 on 9.7 million shares. Franco-Nevada Corp (TSX:FNV) has agreed to make a US$650-million advance payment this month to Teck in return for a 22.5 per cent share of the silver produced by the Antamina joint venture copper project in Peru. Deliveries of silver under the agreement begin in the fourth quarter, with Franco-Nevada paying five per cent of the spot silver price for each ounce of silver delivered. Franco-Nevada stock rose 40 cents, or 0.64 per cent, to $63.27 on 602,750 shares.

Companies reporting major news:

Canadian Oil Sands Ltd. (TSX:COS). Oil and gas. Up 27 cents, or 2.91 per cent, to $9.55 on 7.4 million shares. Canadian Oil Sands Ltd. announced it was adopting a poison pill defence plan in the face of a hostile takeover offer from oilsands giant Suncor Energy Inc. (TSX:SU) (up 58 cents, or 1.66 per cent, to $35.45 on 7.4 million shares). The new shareholder rights plan could be triggered, under certain conditions, if anyone buys 20 per cent or more of COS’s outstanding shares. At that point other shareholders would be able to buy stock at a discount, making the acquisition less attractive to the hostile bidder.