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Realty Income Corporation is a real estate investment trust (REIT). The Company is engaged in in-house acquisition, portfolio management, asset management, credit research, real estate research, legal, finance and accounting, information technology and capital markets capabilities. As of December 31, 2016, the Company owned a diversified portfolio of 4,944 properties located in 49 states and Puerto Rico, with over 83.0 million square feet of leasable space leased to 248 different commercial tenants doing business in 47 separate industries. As of December 31, 2016, of the 4,944 properties in the portfolio, 4,920, or 99.5%, were single-tenant properties, and the remaining were multi-tenant properties. As of December 31, 2016, of the 4,920 single-tenant properties, 4,836 were leased with a weighted average remaining lease term (excluding rights to extend a lease at the option of the tenant) of approximately 9.8 years.