As of December 2025 Atara Biotherapeutics has a market cap of โน9.19 Billion. This makes Atara Biotherapeutics the world's 9246th 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 4th, 2025 the market cap of Atara Biotherapeutics was reported to be: