As of October 2026 Realty Income has a market cap of โน4.960 Trillion. This makes Realty Income the world's 477th 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 8th, 2026 the market cap of Realty Income was reported to be: