Realty Income, based in San Diego, California, is a financial services company structured as a real estate investment trust (REIT). The firm focuses on owning and managing over 13,250 commercial properties primarily under long-term net lease agreements with national chains. Realty Income is an S&P 500 company and a member of the S&P 500 Dividend Aristocrats index, emphasizing dependable monthly dividends that increase over time.