Merck (MRK) Stock: Key News, Analyst Targets, and Catalysts to Know Before the Market Opens Dec. 26, 2025
U.S. stock markets were closed for Christmas Day (Thursday, Dec. 25, 2025) and are scheduled to reopen Friday, Dec. 26 after a holiday-early close on Wednesday, Dec. 24. New York Stock Exchange That timing matters for Merck & Co., Inc. (NYSE: MRK) investors because the stock has been moving on a cluster of late-December headlines—ranging from drug-pricing policy to pipeline fast-tracks and approvals, plus a wave of fresh analyst target changes. Below is what to know heading into the Dec. 26 open, based on the latest available reporting and company disclosures. MRK stock snapshot heading into Dec. 26 What’s driving