S&P/TSX Composite Index

… Great West Life and a move by the European Central Bank to cut interest rates. The Toronto Stock Exchange's S & P / TSX composite index unofficially closed up 58.35 points, or 0.47 percent, at 12,379.64.

… healthcare companies Catamaran Corp and Valeant Pharmaceuticals after their results. The Toronto Stock Exchange's S & P / TSX composite index was down 39.95 points, or 0.32 percent, at 12,281.34, after opening higher.

… failed merger talks and resource stocks that rebounded after Friday's tumble. The Toronto Stock Exchange's S & P / TSX composite index was up 54.70 points, or 0.45 percent at 12,274.90. Eight of the index's 10 main groups were in …

… smartphone maker reported a surprise quarterly profit offset some of the losses. The Toronto Stock Exchange's S & P / TSX composite index was down 25.55 points, or 0.20 percent, at 12,676.10 shortly after the open.

… boosted financial shares and helped offset an 8 percent fall in BlackBerry. The Toronto Stock Exchange's S & P / TSX composite index unofficially closed up 9.48 points, or 0.07 percent, at 12,757.35.

… sustain its bond-buying stimulus plan and by a jump in BlackBerry shares. The Toronto Stock Exchange's S & P / TSX composite index was up 47.82 points, or 0.37 percent, at 12,821.69 shortly after the open.

… resource stocks declined, though a late surge from BlackBerry cushioned the fall. The Toronto Stock Exchange's S & P / TSX composite index unofficially ended down 134.47 points, or 1.04 percent, at 12,744.11. It had hit a 19-month high …

… carriers said they would soon begin selling its long-delayed Z10 device. The Toronto Stock Exchange's S & P / TSX composite index was up 2.34 points, or 0.02 percent, at 12,837.95.