Merck (MRK) Jumps as Oral PCSK9 Data Power Momentum; New Keytruda Diagnostic Cleared — What’s Moving the Stock Today (Nov. 12, 2025)
Merck & Co., Inc. (NYSE: MRK) extended this week’s rally on Wednesday as investors digested fresh late‑stage results for its investigational oral PCSK9 inhibitor and an FDA clearance that supports broader precision use of Keytruda-based therapy. Below is what changed