Pfizer beat expectations last quarter and it raised its guidance. Pfizer (PFE -0.18%) was a hot stock during the pandemic, but it has been crashing in recent years. The company's COVID vaccine resulted in the business posting record sales and profits in 2022. But then, as things went back to normal and demand diminished for its vaccine, so too did interest in Pfizer's stock. What's startling, however, is the stock hasn't simply gone back to the levels it was at back before the pandemic - - it has been on a ...