As of November 2026 Castle Biosciences has a market cap of โน99.37 Billion. This makes Castle Biosciences the world's 6146th 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 Nov 10th, 2026 the market cap of Castle Biosciences was reported to be: