Most actively traded companies on the TSX

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

Toronto Stock Exchange (13,637.20, down 31.09 points):

Bombardier Inc. (TSX:BBD.B). Aerospace, rail equipment. Up nine cents, or 5.88 per cent, to $1.62 on 31 million shares.

IC Potash Corp. (TSX:ICP). Agriculture. Up 1.5 cents, or 30 per cent, to 6.5 cents on 10 million shares.

Telesta Therapeutics Inc. (TSX:TST). Health-care. Up two cents, or 17.39 per cent, to 13.5 cents on 9.9 million shares.

Yamana Gold Inc. (TSX:YRI). Miner. Up 29 cents, or 5.92 per cent, to $5.19 on 6.7 million shares.

Baytex Energy Corp. (TSX:BTE). Oil and gas. Down one cent, or 0.18 per cent, to $5.58 on 6.2 million shares.

Teck Resources Ltd. (TSX:TCK.B). Miner. Down five cents, or 0.46 per cent, to $10.90 on 5.3 million shares.

Companies reporting major news:

Mitel Networks Corp. (TSX:MNW). Communication equipment. Down 97 cents, or 9.62 per cent, to $9.11 on 3.8 million shares. Mitel Networks Corp. has a friendly deal to pay US$1.96 billion in cash and stock for Polycom Inc., a similarly sized Silicon Valley company with global expertise in workforce collaboration and video conferencing. Ottawa-based Mitel — one of the original tech companies in what has been called Silicon Valley North — said Polycom will complement its own expertise in voice communications for business.