Coinspeaker Pfizer (PFE) Stock Up 1.75% Yesterday, Down 0.75% Now, Q1 Earnings, Sales Beat EstimatesPfizer (PFE) stock jumped after the company reported an increase in earnings and sales in the first quarter. However, now PFE stock is in the red.Pfizer (PFE) Stock Up 1.75% Yesterday, Down 0.75% Now, Q1 Earnings, Sales Beat Estimates