As of December 2025 Ionis Pharmaceuticals has a market cap of ยฃ9.92 Billion. This makes Ionis Pharmaceuticals the world's 1567th 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 Ionis Pharmaceuticals was reported to be: