As of December 2025 Ionis Pharmaceuticals has a market cap of A$19.91 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: