Most actively traded companies on the TSX, TSX Venture Exchange

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

Toronto Stock Exchange (14,974.65, up 12.28 points):

Athabasca Oil Corp. (TSX:ATH). Oil and gas. Up nine cents, or 1.26 per cent, to $7.24 on 12.4 million shares.

Petrowest Corp. (TSX:PRW). Oil and gas. Down 10 cents, or 7.41 per cent, to $1.25 on nine million shares.

EMC Metals Corp. (TSX:EMC). Miner. Down 4.5 cents, or 31.03 per cent, to 10 cents on eight million shares.

Fortis Inc. (TSX:FTS.IR). Utilities. Up 60 cents, or 1.61 per cent, to $37.80 on 5.7 million shares.

Bombardier Inc. (TSX:BBD.B). Aerospace. Up one cent, or 0.26 per cent, to $3.81 on 4.7 million shares.

B2Gold Corp. (TSX:BTO). Miner. Up one cent, or 0.33 per cent, to $3.07 on 3.6 million shares.

Toronto Venture Exchange (1,015.04, down 1.54 points):

Elkwater Resources Ltd. (TSXV:ELW). Oil and gas. Up 60 cents, or 300 per cent, to 80 cents on 5.1 million shares.

Theralase Technologies Inc. (TSXV:TLT). Medical devices. Up four cents, or 12.70 per cent, to 35.5 cents on 3.2 million shares.

Companies reporting major news:

Pengrowth Energy Corp. (TSX:PGF). Oil and gas. Up 14 cents, or 1.91 per cent, to $7.46 on 3.6 million shares. The company announced a doubling of the value of its proven reserves at its flagship Lindbergh bitumen project in Alberta from C$1 billion to $2 billion.