SL Green Realty Corp. is a real estate investment trust (REIT). The firm engages in the property management, acquisitions, financing, development, construction, and leasing. It also provides tenant services to its clients. The firm invests in real estate markets of the United States. It primarily invests in commercial office and retail properties. SL Green Realty Corp. was founded in 1970 and is based in New York, New York.