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Company Profile
Company Name | Okasan Business & Technology Co., Ltd. |
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Address | 1-22-16 Asakusabashi, Taito-ku, Tokyo 111-0053 JAPAN |
Phone Number | +81-3-6385-8300 (main) |
Date of Establishment | July 1, 1980 |
President | TONO Hideki |
Business Details | Information Process Services Business、Office Work Agency Business. Temporary staffing business |
Capital | 100,000,000 Yen |
URL | https://www.obt-okasan.co.jp/ |
Message from Okasan Business Service Co., Ltd.

Okasan Business & Technology Co., Ltd. was founded in April 2025, by merging Okasan Information Systems and Okasan Business Services. The former being responsible for system development and operations for securities firms, both internally and externally of the Okasan Securities Group, and the latter serving as back-office BPO for security firms as well as providing temporary staffing.
With the abundant knowledge on securities systems and the know-how on office administration for securities services acquired over the years, we will be supporting Okasan Securities on its securities business, along with other companies within and beyond the Group.
Group Companies
- Okasan Securities Co., Ltd.
- Okasan Niigata Securities Co., Ltd.
- Securities Japan, Inc.
- Sanen Securities Wealth Management Co., Ltd.
- Sanko Securities Wealth Management Co., Ltd.
- Sanko Securities Co., Ltd.
- Okasan International(Asia) Limited
- Okasan Capital Partners Co., Ltd.
- Okasan Business & Technology Co., Ltd.
- Okasan Kogyo Co., Ltd.