As of May 2026 StoneX Group has a market cap of โน845.57 Billion. This makes StoneX Group the world's 2211th 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 May 18th, 2026 the market cap of StoneX Group was reported to be: