As of December 2025 Amphastar Pharmaceuticals has a market cap of โน111.81 Billion. This makes Amphastar Pharmaceuticals the world's 5558th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Dec 6th, 2025 the market cap of Amphastar Pharmaceuticals was reported to be: