7163 on Tokyo Stock Exchange

DOCOMO SMTB Net Bank

Logo: SBI Sumishin Net Bank, Ltd., Public domain, via Wikimedia Commons²

DOCOMO SMTB Net Bank is an online bank located in Minato-ku, Tokyo, Japan, founded in 1986.¹ It is part of NTT DoCoMo.¹ Its shares trade on Tokyo Stock Exchange under the symbol 7163.¹

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Last updated Oct 21, 2026.

Overview

Jun 3, 1986Founded¹

Compare with another stock.

Ticker7163 on Tokyo Stock Exchange¹
Industryeconomics of banking¹
HeadquartersIzumi Garden Tower¹
Websitewww.netbk.co.jp
Legal formkabushiki gaisha¹

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Corporate structure

DOCOMO SMTB Net Bank is part of a group headed by NTT, Inc.. 182 entities, 37 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

NTT, Inc. 東京都千代田区, Japan
- NTT Data Group 100% · Boston, Massachusetts, United States
  - Atom Technologies Subsidiary · Mumbai
  - Fortience Consulting Subsidiary · Chiyoda, Japan
  - Kamco Subsidiary · Melbourne
  - Keane Subsidiary · Boston
  - NTT Data (Germany) Subsidiary · Munich, Germany
  - NTT Data Engineering Systems Corporation Subsidiary · Tokyo
  - NTT Data Italia Subsidiary · Milan, Italy
  - NTT DATA Spain Subsidiary · Madrid, Spain
  - NTT DATA INFORMATION PROCESSING SERVICES PRIVATE LIMITED Subsidiary · Bangalore, India
  - NTT DATA SERVICES INTERNATIONAL TREASURY CENTER, INC. Subsidiary · Plano, Texas, United States
- NTT DATA Business Solutions Bielefeld, Germany
  - NTT DATA Business Solutions a.s. Subsidiary · 100% · Brno, Czechia
  - NTT DATA Business Solutions A/S Subsidiary · 100% · Horsens, Denmark
  - ITC Information Technology Consulting Gesellschaft für Netzwerk Management und Systemintegration mbH Subsidiary · Bielefeld, Germany
- NTT DoCoMo 東京都千代田区, Japan
  - DOCOMO SMTB Net Bank 65.81% · Izumi Garden Tower
    - SBI Card Subsidiary · Tokyo, Japan
  - Docomo Bike Share Subsidiary · 85% · Minato, Japan
  - Tower Records Japan Inc. Subsidiary · 50.3% · Jinnan, Japan
    - Hako Records Subsidiary · Japan
  - Docomo Finance Subsidiary · Tokyo, Japan
  - DoCoMo Pacific Subsidiary · Tamuning
  - NTT Docomo USA Subsidiary
  - エヌ・ティ・ティ・ドコモ四国 Subsidiary · Kagawa Prefecture, Japan
  - ドコモサービス東北 Subsidiary
  - ドコモ・インシュアランス Subsidiary
  - WOWOW Lemino Stake · 49% · Akasaka Park Building, Japan
  - Robi Axiata Stake · 8% · Tejgao, Bangladesh
    - Binge Subsidiary · Bangladesh
  - ahamo Subsidiary · Japan
- NTT Docomo Business 東京都千代田区, Japan
  - NTT PC Communications Subsidiary · Nishi-Shinbashi, Japan
  - Open Computer Network Subsidiary
  - Verio Subsidiary
  - NTT INDIA SOLUTIONS PRIVATE LIMITED Subsidiary · New Delhi, India
    - NTT COMMUNICATIONS INDIA NETWORK SERVICES PRIVATE LIMITED Subsidiary · New Delhi, India
- Dimension Data Subsidiary · Johannesburg
  - Internet Solutions Subsidiary · Johannesburg
- Here Technologies Subsidiary · Singapore
  - Navteq Subsidiary · Chicago
- NTT Advertising Subsidiary · Tokyo, Japan
- NTT DOCOMO VENTURES Subsidiary · Azabudai, Japan
- NTT East Subsidiary · Nishi-Shinjuku, Japan
- NTT Europe Ltd Subsidiary · London
  - Transatel Subsidiary · France
- NTT ExCPartner Subsidiary · Tokyo, Japan
- NTT Prime Square Subsidiary · Tokyo, Japan
- NTT Urban Solutions Subsidiary · Soto-Kanda, Japan
  - NTT Facilities Subsidiary · Minato
  - NTT Urban Development Subsidiary · Tokyo, Japan
- NTT West Subsidiary · Higashinoda-machi, Japan
  - NTT Business Solutions Subsidiary · Osaka Prefecture, Japan
  - NTT FIELDTECHNO CORPORATION Subsidiary · Higashinoda-machi, Japan
  - NTT Medias Subsidiary · Osaka Prefecture, Japan
  - NTT Solmare Subsidiary · Osaka, Japan
  - NTT西日本-三重 Subsidiary · Mie Prefecture, Japan
  - NTT西日本-四国 Subsidiary · Ehime Prefecture, Japan
  - TelWel West Nippon Subsidiary · Tennōji Ward, Japan
  - NTT SmartConnect Corporation Subsidiary
- DIMENSION DATA (SOUTH AFRICA) HOLDINGS (PTY) LTD Subsidiary · Bryanston, South Africa
- DIMENSION DATA COMMERCE CENTRE LIMITED Subsidiary · Douglas, Isle of Man
- DIMENSION DATA GLOBAL MANAGEMENT SERVICES LIMITED Subsidiary · Douglas, Isle of Man
- DIMENSION DATA HOLDINGS LIMITED Subsidiary · London, United Kingdom
- DIMENSION DATA MIDDLE EAST AND AFRICA (PTY) LTD Subsidiary · Johannesburg, South Africa
- E2Y COMMERCE S.L.U Subsidiary · Madrid, Spain
- HATCH INVESTMENTS (MAURITIUS) LIMITED Subsidiary · Moka, Mauritius
- INTAGE INDIA PRIVATE LIMITED Subsidiary · New Delhi, India
- INTERNET SOLUTIONS (PROPRIETARY) LIMITED Subsidiary · Bryanston, South Africa
- JQ NETWORK PTE LTD Subsidiary · Singapore, Singapore
- MERCHANTS SA (PTY) LTD Subsidiary · Bryanston, South Africa
- and 100 more

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

What it owns

What DOCOMO SMTB Net Bank reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Stakes and holdings (Wikidata)

SBI Card

Things Wikidata records the company as owning, with the share when stated.¹

Subsidiaries and ownership

Parent company

Sumitomo Mitsui Trust Bank since Jun 3, 1986
NTT DoCoMo since Sep 2025

Owners

Sumitomo Mitsui Trust Bank 100% since Jun 3, 1986
NTT DoCoMo 65.8% since Sep 2025

Also owns

SBI Card

Former owners and parents

SBI Holdings 50% Sep 11, 2007 to Mar 28, 2023
Sumitomo Mitsui Trust Bank 50% Sep 11, 2007 to Mar 28, 2023

From Wikidata.¹

Former names

SBI Sumishin Net Bank, Ltd.Sep 11, 2007 to Aug 3, 2026¹

Timeline

Aug 3, 2026Renamed Name changed to 株式会社ドコモSMTBネット銀行¹
Aug 3, 2026Renamed Name changed to DOCOMO SMTB Net Bank, Inc.¹
Sep 2025Acquired Acquired by NTT DoCoMo¹
Mar 29, 2023Went public Listed on Tokyo Stock Exchange¹
Sep 11, 2007Renamed Name changed to 住信SBIネット銀行株式会社¹
Sep 11, 2007Renamed Name changed to SBI Sumishin Net Bank, Ltd.¹
Sep 11, 2007Acquired Acquired by SBI Holdings¹
Apr 3, 2006Renamed Name changed to 株式会社SBI住信ネットバンク設立準備調査会社¹
Jun 3, 1986Acquired Acquired by Sumitomo Mitsui Trust Bank¹
Jun 3, 1986Founded Founded¹

Sources

The numbers on this page point here. Each one links to the record it came from.

1
WikidataDOCOMO SMTB Net Bank on Wikidata
2
Wikimedia CommonsDOCOMO SMTB Net Bank logo by SBI Sumishin Net Bank, Ltd., Public domain