As of May 2026 Interactive Brokers has a market cap of ยฃ110.98 Billion. This makes Interactive Brokers the world's 141th 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 17th, 2026 the market cap of Interactive Brokers was reported to be: