Merck (MRK) Stock After Hours on Dec. 12, 2025: Winrevair EU Tailwind, Analyst Targets, and What to Watch Before the Next Open
Merck & Company, Inc. (NYSE: MRK) ended Friday, December 12, 2025, as a relative bright spot in a broadly weak session for U.S. equities. The stock closed at $100.30 (+1.30%), extending its winning streak to three straight days even as