Merck Stock (MRK) Before the Bell on December 8, 2025: Keytruda Setback, $8B Bond Deal and What Investors Should Watch
As Wall Street gears up for the opening bell on Monday, December 8, 2025, Merck & Co., Inc. (NYSE: MRK) enters the week at a pivotal moment. The Dow component has rallied hard in recent months, but now faces a mix of powerful growth catalysts and fresh legal and financing questions that could shape the next leg of its move. On Friday, December 5, Merck shares slipped 1.16% to $99.72, marking a second straight daily loss and modest underperformance versus the broader market. The stock is still only about 6% below its 52‑week high of $105.84, set on November 25,