As of February 2026 Ioneer has a market cap of C$0.40 Billion. This makes Ioneer the world's 8019th 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 Feb 1st, 2026 the market cap of Ioneer was reported to be: