As of October 2026 Interactive Brokers has a market cap of โน13.264 Trillion. This makes Interactive Brokers the world's 155th 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 28th, 2026 the market cap of Interactive Brokers was reported to be: