As of December 2025 Alnylam Pharmaceuticals has a market cap of ยฃ45.39 Billion. This makes Alnylam Pharmaceuticals the world's 378th 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 Alnylam Pharmaceuticals was reported to be: