Pfizer Inc Chief Executive Officer Albert Bourla sold $5.56 million worth of company shares on Monday, the day the drugmaker said its COVID-19 vaccine was 90% effective based on interim trial results,

Pfizer Inc. (NYSE: PFE) experienced a significant uptick in its stock price following two major announcements on September 30, 2025. President Donald Trump announced a new agreement with Pfizer to reduce U.

Shares of AstraZeneca ( AZN 1.95%) 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 ( PFE 1.03%) announcement of a deal with the Trump administration.

Pfizer will buy Metsera for $4.9 billion plus milestone payments, adding incretin, amylin, and oral obesity drug candidates to its pipeline.

Pfizer acquires Metsera to enter the booming obesity drug market with next-gen GLP-1 therapies. Find out why PFE stock is a hold.

The company's push deeper into a hot new technology, plus good news from a top collaborator, put the shine on its equity.

AstraZeneca on Friday became the second big drugmaker after Pfizer to cut a pricing deal with the White House, announcing an agreement alongside President Donald Trump at a late afternoon press conference.

Pfizer’s Metsera acquisition boosts its obesity/GLP-1 pipeline and revenue outlook. See why I'm cautiously upgrading my rating on PFE stock to a Hold.