ORIX Corporation was established on April 17, 1964 in Osaka, Japan as Orient Leasing Co., Ltd. by three trading companies and five banks that included Nichimen, Nissho and Iwai (presently Sojitz Corporation), the Sanwa Bank (presently Mitsubishi UFJ Financial Group Inc.), Toyo Trust & Banking (presently Mitsubishi UFJ Trust and Bank Corporation), the Industrial Bank of Japan and Nippon Kangyo Bank (presently Mizuho Bank, Ltd., Mizuho Holdings, Inc.), and the Bank of Kobe (presently Sumitomo Mitsui Banking Corporation). The company's name was changed to ORIX Corporation in 1989. ORIX began operations with a 13-member staff, including current Senior Chairman Yoshihiko Miyauchi, who at the time had just recently learned the leasing business through a cooperative arrangement with U.S. Leasing International Inc. in the United States.

Its ensuing development has mirrored trends in the business environment and includes a loan servicing business that invests in non-performing loans as well as commercial mortgage-backed securities (CMBS) management and collection, a principal investment business, a securities brokerage and a mergers and acquisitions and financial advisory business. The Investment and Operations segment also comprises the Eco Services sub-business, which consists of

(a) Renewable Energy Business,

(b) Energy Conservation Services,

(c) Electric Power Supply Business and

(d) Resource and Waste Processing Business