Merck (MRK) Stock After Hours on December 10, 2025: What to Watch Before the December 11 Open
Merck & Co., Inc. (NYSE: MRK) heads into the December 11, 2025 U.S. trading session with its share price stabilizing after a volatile stretch driven by earnings, pipeline news, and a major flu-drug acquisition. Here’s a structured look at what happened after the bell on December 10 – and what investors should know before the market opens on December 11. How Merck Stock Traded on December 10, 2025 Merck shares rebounded modestly during the regular session on Wednesday, December 10. Multiple real-time feeds show the stock closing around $97.62, up roughly 0.7–0.8% on the day, after a sharp decline earlier