The partnership of Tim Cook and IBM could spell trouble for Blackberry, today's Chart of the Day. The stock has been up, especially in 2014, but that may not hold if the new pairing of the handset king and the enterprise titan will pose a threat to Blackberry's business at a time when it is facing cash struggles and looking to monetize its BBM messenger business -- at the same time apps that do the exact same thing proliferate and are being acquired by other social media entities. Can CEO John Chen stave off decline for Blackberry, or is his latest move -- hiring a new COO -- only fighting the inevitable?

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