03/13/2012 05:25 EDT | Updated 05/13/2012 05:12 EDT

Most actively traded companies on the TSX, TSX Venture Exchange markets

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

Toronto Stock Exchange (12,465.66, up 103.86 points):

NAL Energy Corp. (TSX:NAE). Oil and gas. Up 46 cents, or 5.90 per cent, at $8.26 on 7,324,878 shares. Pengrowth Energy Corp. (TSX:PGF). Oil and gas. Down 17 cents, or 1.7 per cent, at $9.78 on 2,993,435 shares. Pengrowth announces plans to take over NAL for $1.9 billion, including debt. CEO says the deal will give his company the heft it needs to chase after growth opportunities in the oilsands and elsewhere.

Stantec Inc. (TSX:STN). Project management. Down eight cents, or 0.25 per cent, at $31.56 on 5,833,004 shares.

Eldorado Gold Corp. (TSX:ELD). Miner. Up 56 cents, or 4.36 per cent, at $13.41 on 5,596,740 shares.

Poseidon Concepts Corp. (TSX:PSN). Fluid management. Down 73 cents, or 4.76 per cent, at $14.60 on 5,174,740 shares.

Bombardier Inc. (TSX:BBD.B). Transportation equipment. Up nine cents, or 2.16 per cent, at $4.25 on 4,835,486 shares.

Manulife Financial Corp. (TSX:MFC). Insurer. Up 12 cents, or 0.89 per cent, at $13.66 on 3,876,577 shares.

TSX Venture Exchange (1,555.60, up 14.85 points):

Novus Energy Inc. (TSXV:NVS). Oil and gas. Down two cents, or 1.83 per cent, at $1.07 on 9,521,463 shares.

Midlands Minerals Corp. (TSXV:MEX). Miner. Up one cent, or 28.57 per cent, at 4.5 cents on 3,360,167 shares.

Companies reporting major news:

Air Canada Inc. (TSX:AC.B). Airline. Unchanged at 82 cents on 1,737,740 shares. A spokesman for Lisa Raitt says the labour minister was followed through Toronto's Pearson airport and harassed by Air Canada workers. The incident, which union officials have described as Raitt being heckled, snowballed into a wildcat strike that threw the country's busiest airport into chaos early today.

Research in Motion (TSX:RIM). Consumer technology. Down eight cents, or 0.58 per cent, at $13.67 on 3,385,247 shares. RIM says developers will get a taste of the much anticipated new BlackBerry 10 operating system in May. Attendees at the company's developers' conference in Orlando, Fla., will get a prototype device, called the BlackBerry 10 Dev Alpha, which will function as a testing platform for programming apps.