As of October 2026 Castle Biosciences has a market cap of โน104.61 Billion. This makes Castle Biosciences the world's 6123th 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 Oct 3rd, 2026 the market cap of Castle Biosciences was reported to be: