Primary contents from here.

Our businesses in the Support spheres deliver system infrastructures and provide administrative, property management, and other services, primarily for Group member companies.
System development and implementation
Okasan Information Systems provides services of securities operational systems for Okasan Securities, as well as 14 securities firms both inside and outside the Okasan Securities Group. The Company also provides online trading sytems.
Administrative services and other support
Our other support businesses include back office operations, including data entry, forms preparation, and shipping, as well as property management and other services.
Okasan Securities Group Companies Operating within the Support Business Division
The corporate profiles of Okasan Securities Group companies that operate within the Support Business Division are available here: