Japan Securities Finance Co Ltd operates in three business segments: Securities Finance, Trust Banking, and Real Estate Leasing. In the Securities Finance business, which makes up the vast majority of the company's total revenue, the company primarily provides loans for margin transactions where it earns revenue through fees and interest. The Securities Finance segment also earns fees through stock and bond lending and earns interest through bond financing and general loans. The Trust Banking business provides trust services, such as securities trust, and banking services, such as deposits and loans. The Real Estate Leasing business provides services for leasing and managing real estate. The company operates exclusively in Japan.