As of December 2025 Atara Biotherapeutics has a market cap of โน11.36 Billion. This makes Atara Biotherapeutics the world's 9021th 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 24th, 2025 the market cap of Atara Biotherapeutics was reported to be: