BlackBerry Ltd, one of the biggest losers on the Toronto Stock Exchange last year, is one of the top performers of 2014 as optimism grows and short-sellers hurriedly bail out. The company's Nasdaq-listed shares rose 7.9 percent in trading on Tuesday, a day after a big run-up in the stock on the Toronto Stock Exchange. Analysts believe the 30 percent surge in BlackBerry's share price this year has much to do with some fast moves on the part of new Chief Executive John Chen that have boosted shareholder sentiment and forced short-sellers to exit their positions.



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