Pfizer Inc. (NYSE:PFE) was upgraded by equities researchers at TheStreet from a “hold” rating to a “strong-buy” rating in a report released on Friday. Pfizer (NYSE:PFE) traded up 0.69% during mid-day trading on Friday, reaching $34.93. 20,423,941 shares of the company’s stock traded hands. The stock has a market cap of $211.85 billion and a […]