Bartley estimates that Fire sales could range from 12 million to 15 million units this year, but adds that positive supply checks gives him more comfort in his forecast of 14.7 million units.

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We are also positive on FB near-term as our checks suggest ad spend growth on social media is robust, albeit off of a small base, and though expense growth in 2013 may pressure margins, we believe FB remains largely a revenue story.

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These positive results are driven by the fact that patients write the checks and are thus fully conscious of the costs, as well as by the fact that providers are under pressure to make their offerings more enticing and affordable.

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"Trends in worldwide CDMA continue to be positive, though the U.S. market was a bit softer in April in our recent checks, " Hoffman wrote in a research note Tuesday.

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