Merck stock heads into Monday with Keytruda, Welireg cancer data and FDA review dates on deck
NEW YORK, March 1, 2026, 13:44 EST — Market closed. Merck & Co finished Friday’s session up 3.8%, closing at $123.82. Shares moved between $119.68 and $124.00 throughout the day, with roughly 17.6 million changing hands, Investing.com data show.
