Tokyo Metro Co., Ltd. operates a subway transit business. The company is headquartered in Taito-Ku, Tokyo-To and currently employs 11,328 full-time employees. The company went IPO on 2024-10-23. The firm operates through three business segments. The Transportation Business segment owns a subway network consisting of nine lines, mainly in the Tokyo metropolitan area, and operates and manages trains as well as maintains and manages railroad facilities. The Real Estate Business segment is based on business development that can generate synergy effects with the railroad business, and leases real estate, mainly office buildings and hotels, such as Shibuya Mark City, along the Company's railway lines. The Distribution and Advertising Business segment operates commercial facilities such as Echika at stations along the Company's lines, and is involved in the advertising business, which mainly handles advertising inside stations and trains, and the information and telecommunications business, which leases optical fiber and other services.