TORONTO - Some of the most active companies traded Monday on the Toronto Stock Exchange and the TSX Venture Exchange:
Toronto Stock Exchange (14,284.43 up 26.74 points):
Twin Butte Energy Ltd. (TSX:TBE). Oil and gas. Up 11 cents, or 4.62 per cent, to $2.49 on 44.8 million shares.
Osisko Mining Corp. (TSX:OSK). Miner. Up nine cents, or 1.19 per cent, to $7.63 on 9.4 million shares.
Fortis Inc. (TSX:FTS.IR). Utilities. Up 20 cents, or 0.56 per cent, to $35.80 on 6.6 million shares.
Bombardier Inc. (TSX:BBD.B). Transportation equipment. Up 12 cents, or 3.00 per cent, to $4.12 on 6.4 million shares.
Surge Energy Inc. (TSX:SGY). Oil and gas. Up 23 cents, or 3.49 per cent, to $6.82 on 4.4 million shares.
Sherritt International Corp. (TSX:S). Miner. Up 40 cents, or 9.30 per cent, to $4.70 on 4.1 million shares.
Toronto Venture Exchange (996.01 down 1.76 points):
Supreme Pharmaceuticals Inc. (TSXV:SL). Biotechnology. Down 0.5 cents, or 6.67 per cent, to seven cents on 13.4 million shares.
Aldershot Resources Ltd. (TSXV:ALZ). Miner. Unchanged at one cent on 7.5 million shares.
Companies reporting major news:
BlackBerry (TSX:BB). Communication services. Down 16 cents, or 2.01 per cent, to $7.82 on 2.4 million shares. The company says Apple iPhones and Android devices running chat software BlackBerry Messenger face an "extremely small" risk from the Heartbleed software bug. The bug is caused by a flaw in OpenSSL software, which is commonly used on the Internet to provide security and privacy.
HudBay Minerals Inc. (TSX:HBM). Miner. Up 20 cents, or 2.29 per cent, to $8.92 on 274,362 shares. The company has moved to block a shareholder rights plan at Augusta Resource Corp., target of a HudBay hostile takeover bid. The company said Monday that it has asked the British Columbia Securities Commission to cease trade the shareholder rights plan before its takeover offer expires on May 5.