By Euan Rocha and Alastair Sharp WATERLOO/TORONTO (Reuters) - BlackBerry Ltd reported a smaller-than-expected quarterly loss on Thursday as the smartphone company's cost cutting and other turnaround efforts started to pay off. Shares jumped more than 10 percent in early trade after BlackBerry burned through less cash than many expected and its gross profit margin rose from a year earlier. "The short trade is over in this name for now - for now," said BGC analyst Colin Gillis. BlackBerry has been slashing costs and has more than halved its workforce over the last two years as part of a do-or-die attempt to turn its business around after losing ground to Apple Inc's iPhone and Samsung Electronics Co devices that run on Google Inc's Android system.



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