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

Toronto Stock Exchange (14,554.25 up 20.86 points):

Bombardier Inc. (TSX:BBD.B). Aerospace. Up two cents, or 0.50 per cent, to $4.03 on 14.2 million shares.

Yamana Gold Inc. (TSX:YRI). Miner. Down 27 cents, or 3.14 per cent, to $8.34 on 6.7 million shares.

Osisko Mining Corp. (TSX:OSK). Miner. Down 16 cents, or 2.02 per cent, to $7.77 on 6.4 million shares.

Twin Butte Energy Ltd. (TSX:TBE). Oil and gas. Down five cents, or two per cent, to $2.45 on 5.7 million shares.

Lundin Mining Corporation (TSX:LUN). Miner. Up 23 cents, or 4.23 per cent, to $5.67 on 5.6 million shares.

Nautilus Minerals Inc. (TSX:NUS). Miner. Up 16.5 cents, or 70.21 per cent, to 40 cents on 5.4 million shares. The company announced it has reached financial and environmental agreements with Papau New Guinea that will enable is Solwara 1 offshore mineral exploration project to proceed.

Toronto Venture Exchange (1,014.45 up 3.47 points):

Sensio Technologies Inc. (TSXV:SIO). Computer hardware. Up six cents, or 22.22 per cent, to 33 cents on 11 million shares.

Petrodorado Energy Ltd. (TSXV:PDQ). Oil and gas. Up one cent, or 25 per cent, to five cents on 4.9 million shares.

Companies reporting major news:

Alamos Gold Inc. (TSX:AGI). Miner. Down 22 cents, or 2.14 per cent, to $10.05 on 589,837 shares. The Toronto-based company saw its first-quarter profit shrink to US$2.7 million or two cents per share, down 90 per cent compared with the same period last year as it sold fewer ounces at a lower price, but says the second half of 2014 is expected to be stronger.

Barrick Gold Corp. (TSX:ABX). Miner. Down 34 cents, or 1.74 per cent, to $19.25 on 4.6 million shares. The company has renewed its overtures to Newmont Mining Corp. to resume merger talks, the Globe and Mail reported. Citing an unidentified person familiar with the situation, the Globe said Barrick has formally proposed reopening talks that broke down last week.

Domtar Corp. (TSX:UFS). Fibre-based products. Up $1.59, or 1.48 per cent, at $108.78 on 14,386 shares. The Montreal-based company missed expectations as its net income dropped 13 per cent due to weather-related issues, increased costs and a drop in productivity of some of its pulp and paper mills. The company, which reports in U.S. dollars, earned US$39 million for the period ended March 31, compared with $45 million a year earlier.

Imperial Oil Ltd. (TSX:IMO). Up 49 cents, or 0.93 per cent, to $53.10 on 655,186 shares. The CEO of the company says the Keystone XL pipeline is just as important today as it was when first proposed in 2008. But to cope with uncertainty over regulatory approvals, Imperial has committed to send its crude to market on a variety of proposed pipelines, such as the Trans Mountain expansion to the West Coast and the Energy East line to the East Coast.

Potash Corporation of Saskatchewan Inc. (TSX:POT). Fertilizer. Up 67 cents, or 1.75 per cent, to $39.02 on 2.5 million shares. The company posted quarterly net income of US$340 million or 40 cents a share, down sharply from 63 cents per share, or US$556 million, in the same period last year. However, that was still well above its own guidance.

Sears Canada Inc. (TSX:SCC). Retail. Down 50 cents, or 2.99 per cent, to $16.20 on 13,154 shares. The company's chief executive Douglas Campbell says he will dedicate more resources to the struggling company's online shopping experience and an updated inventory management system.

Shaw Communications Inc. (TSX:SJR.B). Communication services. Down one cent, or 0.04 per cent, to $26.34 on 627,558 shares. The Calgary-based telecommunications company is getting into the streaming music business through a partnership with digital service Rdio.

News from © The Canadian Press, 2014