Pandora stock fell as much as 26% in after hours trading Thursday, on news that the music streamer's earnings missed Wall Street expectations and the company's own guidance. Pandora's revenue and listener growth both slowed somewhat, but for the first time surpassed 1 billion song streams per day on select days, grabbing an impressive 79.2% of the overall internet radio market. Earnings highlights reported on Thursday afternoon: Q4 2014 total mobile revenue was $209.5 million, growing 43% year-over-year on a GAAP and non-GAAP basis, now 78% of total revenue Full year 2014 total GAAP and non-GAAP mobile revenue was $712.0...

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