Most actively traded companies on the TSX

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

Toronto Stock Exchange (13,473.83, up 73.86 points):

Bombardier Inc. (TSX:BBD.B). Aerospace, rail equipment. Unchanged at $1.28 on 27.7 million shares. Weeks after receiving a cash infusion from the Quebec government, Bombardier has signed a deal that would see the province’s pension fund manager invest US$1.5 billion for a 30 per cent stake in the company’s rail business.

Telesta Therapeutics Inc. (TSX:TST). Health-care. Down 15.5 cents, or 39.24 per cent, to 24 cents on 11.6 million shares.

B2Gold Corp. (TSX:BTO). Miner. Up four cents, or 2.78 per cent, to $1.48 on 7.4 million shares.

GeneNews Ltd. (TSX:GEN). Health-care. Up half-a-cent, or 33.33 per cent, to two cents on 6.1 million shares.

Canadian Oil Sands Ltd. (TSX:COS). Oil and gas. Down 19 cents, or 2.12 per cent, to $8.79 on 4.2 million shares.

Trevali Mining Corp. (TSX:TV). Miner. Down two cents, or 6.25 per cent, to 30 cents on 3.8 million shares.

Companies reporting major news:

Lucara Diamond Corp. (TSX:LUC). Miner. Up 49 cents, or 30.43 per cent, to $2.10 on 3.4 million shares. A diamond believed to be one of the largest in the world has been discovered in a mine in Botswana by Vancouver-based Lucara. The 1,111-carat gem measures 65 millimetres by 56 mm by 40 mm — a rock weighing half a pound that’s nearly the size of a tennis ball.