Merck stock (NYSE: MRK) lost about 10% in 2024, underperforming the broader S&P 500 index, which gained 23% for the year. Despite strong performances from other pharmaceutical giants like Eli ...

Shares of Merck slid Tuesday in early trading after the drugmaker surprised Wall Street with a lower-than-expected 2025 sales forecast due partly to a pause in shipments of one of its top-selling ...