UnitedHealth upgraded to Strong Buy from Outperform at Raymond James

On The Fly: Pre-market Movers HIGHER: Obagi Medical , up 14.9% after Mez Pharma proposes to acquire Obagi for $22 per share... Nuance , up 8.5% after Carl Icahn reports 9.27% passive stake... Vodafone , up 5.2% after FT Alphaville says Verizon , AT&T may consider offer to break-up and buy Vodafone assets... Humana , up 9.4%, UnitedHealth , up 4.2%, ... (more)

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