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) --



shares gained 3.53% to reach $15.55 in premarket trading, lifted by the positive sentiment swirling around the smartphone maker.

In a note released on Monday, Jefferies analyst Peter Misek reiterated his BlackBerry "buy" rating, citing solid uptake of the company's latest handsets. "Our checks indicate Z10 sales in Canada, U.S., and UK remain steady with no excess inventory or return issues," he wrote.

Misek also pointed to Friday's Q10 launch at Carphone Warehouses within Selfridges department stores in the U.K. The analyst noted that the QWERTY keyboard phones sold out quickly at the high-end department stores.

BlackBerry was also one of the most active premarket Nasdaq stocks on share volume of 351,425.



shares gained 1.34% to reach $27.21 ahead of the social network's first-quarter results after market close on Wednesday. The Menlo Park, Calif.-based firm was another active premarket Nasdaq stock on share volume of 262,002.



, however, was an even bigger gainer, climbing 17.5% to $59.1 on share volume of 437,991. Early on Monday, the Chinese Internet giant announced a social commerce alliance with



Sirius XM


was up 0.96% to $3.15, while



shares rose 2.09% to $3.42.



gained 0.66% to reach $419.95.

--Written by James Rogers in New York.

Follow @jamesjrogers

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