As of January 2026 Interactive Brokers has a market cap of A$179.25 Billion. This makes Interactive Brokers the world's 177th 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 Jan 11th, 2026 the market cap of Interactive Brokers was reported to be: