BUZZ-Blackberry Ltd: Stock slides after bigger-than-expected loss
** Blackberry's U.S.-listed shares down 4 pct at $6.75 premarket
** The Canadian smartphone maker reports a bigger-than-expected Q2 loss as revenue from smartphone sales slides further
** Total revenue falls a steeper-than-expected 46.5 pct
** Company expects "modest" sequential revenue growth in Q3 and Q4, and a return to profitability in Q4
** Up to Thursday's close, stock had fallen nearly 36 pct this year
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