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

Toronto Stock Exchange (14,984.96, up 33.08 points):

IC Potash Corp. (TSX:ICP). Agriculture. Unchanged at two cents on 7.6 million shares.

Hydro One Ltd. Instalment Receipts (TSX:H.IR). Utilities. Up five cents, or 0.14 per cent, to $36.85 on 5.5 million shares.

Teck Resources Ltd. (TSX:TECK.B). Miner. Up 29 cents, or 0.97 per cent, to $30.18 on 2.3 million shares.

Aimia Inc. (TSX:AIM). Loyalty programs. Down five cents, or 2.66 per cent, to $1.83 on 2.3 million shares.

Yamana Gold Inc. (TSX:YRI). Miner. Down six cents, or 1.73 per cent, to $3.40 on 2.22 million shares.

Manulife Financial Corp. (TSX:MFC). Financial Services. Up four cents, or 0.16 per cent, to $24.50 on 2.19 million shares.

Companies reporting major news:

CGI Group Inc. (TSX:GIB.A). Application software. Down 24 cents, or 0.38 per cent, to $62.57 on 394,805 shares. Canada’s largest publicly traded IT services business is moving to expand its presence in Europe through the acquisition of Helsinki-based Affecto PLC in a friendly $146-million cash deal that would add about 1,000 staff in the Nordic region.