SL Green Realty Corp. is a self-managed real estate investment trust (REIT), with in-house capabilities in property management, acquisitions and dispositions, financing, development and redevelopment, construction and leasing. The Company operates through two segments: real estate, and debt and preferred equity investments. It acquires, owns, repositions, manages and leases commercial office, retail and multifamily properties in the New York Metropolitan area. Its debt and preferred equity activities include purchases and originations, inclusive of advances under future funding obligations, discount and fee amortization, and paid-in-kind interest. As of December 31, 2016, the Company owned or held interests in 24 consolidated commercial office buildings encompassing approximately 16.1 million rentable square feet and seven unconsolidated commercial office buildings encompassing approximately 6.6 million rentable square feet located primarily in midtown Manhattan.