Amgen Stock Drops 10.1 Percent Amid Broader Market Decline

Amgen stock dropped sharply on September 9, 2026, falling 10.1 percent by market close, making it one of the steepest declines among major blue-chip stocks.

This substantial loss stood out against a more moderate decline in the broader S&P 500 index, which fell around 0.5 percent amid higher oil prices and weakness in pharmaceuticals.

The Dow Jones Industrial Average dropped by over 0.7 percent during this session, further highlighting the significant underperformance of Amgen stock.

Today, Amgen is scheduled to present at the Morgan Stanley 24th Annual Global Healthcare Conference, where executives may provide fresh commentary on the company's pipeline, strategy, and financial outlook in light of the recent decline.