Amgen (AMGN) Stock: What to Know Before the U.S. Market Opens on Dec. 15, 2025
Amgen Inc. (NASDAQ: AMGN) heads into Monday’s session (Dec. 15, 2025) after a news-heavy stretch that has reinforced two familiar pillars of the large-cap biotech story: a steady capital-return profile and a pipeline/label-expansion engine that can still surprise to the upside. As of the latest available close, Amgen shares were around $317.74, down $1.19 (-0.37%) from the prior close, with a 52-week range of roughly $230.10 to $346.38 and a market capitalization near $171 billion. Below is a detailed pre-market guide to the latest headlines, near-term catalysts, analyst forecasts, and the key risks investors are weighing before the opening bell.