As of December 2025 Interactive Brokers has a market cap of ยฃ83.92 Billion. This makes Interactive Brokers the world's 183th 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 8th, 2025 the market cap of Interactive Brokers was reported to be: