Goldman: Blackberry a 'Sell' Over Mobile Messaging Concerns
Shares of Blackberry have gained over 30% year-to-date as the company shifts to software and away from hardware.

Shares of Blackberry Ltd (BBRY) were falling over 3% in Toronto trade on Tuesday after investment firm Goldman Sachs reiterated its "Sell" rating on the company's stock. BlackBerry's U.S.-listed shares were inching higher during mid-morning trading on Tuesday.

The firm cited concerns regarding rising competition in its core mobile messaging business as the key driver for Tuesday's downgrade.

BBM Enterprise, the company's secure mobile messaging platform, allows employees to capitalize on the speed, reliability and privacy of BBM for faster communication, collaboration and decision making while maintaining control over corporate data, the company says.

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