Press Release
February 2, 2026
SBI Sumishin Net Bank, Ltd.
Monex, Inc.
SBI Sumishin Net Bank and Monex Launch Business
Alliance for Financial Instruments Intermediation
SBI Sumishin Net Bank, Ltd. (Head Office: Minato-ku,Tokyo; President & CEO: Noriaki Maruyama; henceforth referred to as “SSNB”) and Monex, Inc. (Head Office: Minato-ku, Tokyo; President & Representative Director: Yuko Seimei; “Monex”) have entered into a business consignment agreement for financial instruments intermediation. The two companies began offering financial products and services—including domestic and international equities—to customers of SSNB on February 2, 2026 (“the Alliance”).
Logos of the respective companies
Overview of the Alliance
SSNB, a member of the NTT DOCOMO Group, signed a strategic partnership agreement with Monex and NTT DOCOMO, Inc. (“NTT DOCOMO”) in December 2025. Under this agreement, the three companies are leveraging their respective services and expertise to deliver a new financial experience that supports customers across all aspects of their lives and to create a new standard in digital finance.
As part of this collaboration, customers of SSNB will now be guided—via the bank’s website—to open a comprehensive securities trading account with Monex. Once opened, customers gain access to a wide range of Monex products and services, including investment trusts, equities, and ETFs.
This initiative is a key component of the broader group collaboration aimed at meeting the evolving needs of both banks’ and securities customers. Preparations are underway to introduce additional integrated services around August 2026, including simultaneous bank–securities account opening, a seamless funds sweep service, and preferential programs jointly offered by the three companies. Joint promotional campaigns are also planned.
SSNB has expanded its service lineup through its digital banking platform—such as foreign currency deposits and robo‑advisory services—and the addition of Monex’s product lineup will further enhance customer options, providing new opportunities for asset management.
Monex, the only securities company within the DOCOMO Group, expects this alliance to further strengthen its customer base. By leveraging its extensive product offering, Monex aims to support the asset building and wealth management needs of a broader range of individual investors.
Company Profiles
SBI Sumishin Net Bank, Ltd.
- Head Office
- 3-2-1 Roppongi, Minato-ku, Tokyo
- Representative
- Noriaki Maruyama, President and Chief Executive Officer
- Established
- June 1986 (Banking license obtained in September 2007)
- Registration
- Registered Financial Institution, Kanto Local Finance Bureau (Registration No. 636)
- Membership
- Japan Securities Dealers Association
Monex, Inc.
- Head Office
- 1-12-32 Akasaka, Minato-ku, Tokyo
- Representative
- Yuko Seimei, President and Representative Director
- Established
- May 1999
- Registration
- Financial Instruments Business Operator, Kanto Local Finance Bureau (Kinsho No. 165)
- Membership
- Japan Securities Dealers Association; Type II Financial Instruments Firms Association; Financial Futures Association of Japan; Japan Virtual and Crypto Assets Exchange Association; Japan Investment Advisers Association
About SBI Sumishin Net Bank
SBI Sumishin Net Bank (“SSNB”) is an online bank that was founded in 2007 and became the first Japanese internet bank to be listed on the Tokyo Stock Exchange Standard Market in March 2023. By leveraging the most advanced technology solutions, SSNB offers safe, secure and convenient banking experience to its customers.
In the digital bank business, SSNB has now over 7 million customer accounts with over 9 trillion yen (*1) in deposits. It consistently ranks high in customer satisfaction by recognizing individual needs of different lifestyles and life stages as well as by offering a well-designed user interface and experience.
Its mortgage business, which has built on a unique business model, is the largest among Japanese banks in terms of the amount of newly originated mortgage loans (*2).
SSNB’s NEOBANK® is a full-service BaaS (banking as a service) product offering that enables its brand partners to offer a full range of banking services to their customers. As a pioneer in the sector, it boasts a number of BaaS partnerships with Japan’s leading brands and businesses.
SSNB is vigorously engaged in non-financial activities as well including data initiatives and carbon credit trading in an endeavor to balance business growth with social responsibility.
Moving forward, SSNB will remain committed to embracing corporate social responsibility and sustainable growth as a fintech that goes beyond banking services to realize a society where prosperity and abundance circulate driven by the power of technology and a spirit of fairness.
To learn more about SBI Sumishin Net Bank, please visit: www.netbk.co.jp/contents/company/en/
(*1) The number of deposit accounts is as of February 7, 2024, and the balance of deposits is as of December 11, 2023.
(*2) This statement is base on our research as of March 31, 2023, using data disclosed by multiple domestic banks including Resona Holdings, Sumitomo Mitsui Financial Group, Sumitomo Mitsui Trust Holdings, and Mizuho Financial Group, as well as our own.
(*3) NEOBANK® is a registered trademark of SBI Sumishin Net Bank. The Registered trademark number is 5953666.
Contact
For further information about this press release, please contact:
SBI Sumishin Net Bank, Public Relations
ir_csr_sdgs@netbk.co.jp
Note: This content has been translated from the Japanese original using artificial intelligence (AI) or machine translation technology for reference purposes only.
In the event of any discrepancy between this translated document and the Japanese original, the original shall prevail.