TORONTO -- Shares in Research In Motion Ltd. (TSX:RIM), once the most valuable company on the TSX, have closed below $12 for the first time since 2003.
Stock in the Waterloo tech giant fell 72 cents or 5.7 per cent to close at $11.91 on the Toronto Stock Exchange.
That follows three days of declines after the BlackBerry maker held a developers conference, where it gave a first glimpse of its much-anticipated new operating software.
The software won't hit markets for several months.
RIM's shares have fallen about 15 per cent since Tuesday, when it first unveiled the prototype BlackBerry 10 operating system.
The company has come under pressure from some shareholders to put itself up for sale or dispose of some of its assets -- primarily its valuable patents. The event also marked the public debut of newly appointed chief executive Thorsten Heins, after co-CEOs Jim Balsillie and Mike Lazaridis left the company earlier this year.
-- The Canadian Press