As of October 2026 Castle Biosciences has a market cap of C$1.41 Billion. This makes Castle Biosciences the world's 6223th 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 23rd, 2026 the market cap of Castle Biosciences was reported to be: