First Industrial Realty Trust Inc is a real estate investment trust that owns, manages, acquires, sells, develops, and redevelops industrial real estate. First Industrial's real estate portfolio is comprised of light industrial properties,which are split between industrial and office space, and bulk warehouse properties generally located in business parks near transportation hubs. While light industrial buildings represent a share of First Industrial's holdings, bulk warehouses make up the majority of its portfolio's square footage. The company derives the vast majority of its revenue from rental income tied to medium-term leases. First Industrial's customers include manufacturing, retail, wholesale trade, distribution, and professional services companies.