#Japan #Tokyo #NTT DOCOMO #SBI Sumishin #Monex Securities

Strategic Alliance Among NTT Docomo, SBI Sumishin Net Bank, and Monex Securities

In a significant development within the financial sector, Monex Securities Inc., headquartered in Minato-ku, Tokyo, has recently finalized a business alliance with NTT Docomo, based in Chiyoda-ku, Tokyo, and SBI Sumishin Net Bank, also situated in Minato-ku, Tokyo. This agreement, cemented on December 19, 2025, heralds a new era in financial service collaboration.

Background of the Alliance

Monex Securities has always been guided by its mission to revolutionize the future of finance and democratize the capital markets. The company aims to significantly enhance individual asset formation through investment, creating a substantial social impact. In January 2024, Monex initiated a capital and business partnership with Docomo, aiming to provide innovative asset formation services to customers. As the only securities company in the Docomo group, Monex has deepened collaborations by offering services like "d-Card Savings" and "Easy Asset Management" linked to the d Payment app.

The recent integration of SBI Sumishin Net Bank into the Docomo group in October 2025 set the stage for this tri-partite collaboration. By combining their expertise in telecommunications, payments, banking, and securities, these three companies are poised to create a new standard in financial services aimed at enhancing customer experiences at every touchpoint.

Key Initiatives

The partnership will focus on several key initiatives, with services expected to launch in August 2026:

1. Simultaneous Account Opening: A streamlined process will be developed, allowing customers to open both an SBI Sumishin Net Bank account and a Monex Securities investment account simultaneously through a single application. This will significantly simplify and expedite account opening procedures for users.

2. Cash Sweep Functionality: Customers will benefit from a seamless cash sweep feature designed to facilitate efficient fund transfers between their SBI Sumishin Net Bank savings account and their Monex Securities investment account. Automatic transactions will eliminate the need for manual fund movements, enabling clients to trade effortlessly.

3. Exclusive Benefits for Users: By utilizing the services of NTT Docomo, SBI Sumishin Net Bank, and Monex Securities together, customers will gain access to special offers and enhanced benefits, maximizing the value of their financial activities.

Company Overviews

NTT Docomo Overview

• - Name: NTT Docomo, Inc.
• - Established: August 1991
• - Location: Sanno Park Tower, 2-11-1 Nagatacho, Chiyoda-ku, Tokyo
• - Capital: 949,680 million yen (as of March 31, 2025)
• - Main Business: Telecommunications, smart life services, and more.

SBI Sumishin Net Bank Overview

• - Name: SBI Sumishin Net Bank, Ltd.
• - Established: June 1986 (Gained banking license: September 2007)
• - Location: Sumitomo Realty & Development Roppongi Grand Tower, 3-2-1 Roppongi, Minato-ku, Tokyo
• - Capital: 31,000 million yen (as of October 1, 2025)
• - Main Business: Banking services.

Future Commitment

Monex Securities remains steadfast in its commitment to offer tailored financial services that adapt to the individual life stages of its clients. This partnership marks a significant step toward achieving that goal, promising to provide a cohesive and enriched financial experience for all users.

By collaborating effectively, Monex Securities, NTT Docomo, and SBI Sumishin Net Bank aspire to redefine customer engagement in the financial sphere, setting a new benchmark for service excellence and innovation.