Key Points AstraZeneca's shares jumped after Pfizer's announcement of a major deal with the Trump administration. Pfizer's good news could benefit AstraZeneca, too. 10 stocks we like better than AstraZeneca Plc › Shares of AstraZeneca (NASDAQ: AZN) have jumped more than 10% this week. On Monday, the British drugmaker reported positive results from a clinical study of Enhertu in treating HER2-positive early breast cancer. However, the main reason for AstraZeneca's big gain was Pfizer's (NYSE: PFE) a ...