As of December 2025 Castellum has a market cap of ยฃ84.7 Million. This makes Castellum the world's 9155th 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 9th, 2025 the market cap of Castellum was reported to be: