As of January 2026 Iron Mountain has a market cap of โน2.534 Trillion. This makes Iron Mountain the world's 877th 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 22nd, 2026 the market cap of Iron Mountain was reported to be: