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8309 on Tokyo Stock Exchange

Sumitomo Mitsui Trust Group

Logo: © Sumitomo Mitsui Trust Group, Inc., Public domain, via Wikimedia Commons5

Japanese financial holding company

Sumitomo Mitsui Trust Group, Inc. (三井住友トラストグループ株式会社, Mitsui Sumitomo Torasuto Gurupu Kabushiki Gaisha), formerly Chuo Mitsui Trust Holdings, Inc., is a Japanese financial holding company headquartered in Chiyoda, Tokyo. It provides an assortment of financial products to retail and wholesale customers, with a focus on asset management, financial brokerage, and real estate services.3 Its shares trade on Tokyo Stock Exchange under the symbol 8309.1 Wikipedia text CC BY-SA 4.0

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Last updated Oct 21, 2026.

Overview

2002Founded1

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  • Ticker8309 on Tokyo Stock Exchange1
  • Industryfinancial sector, financial services1
  • HeadquartersTokyo1
  • Websitewww.smth.jp
  • Legal formkabushiki gaisha1
  • Incorporated inJapan6
  • Business address1-1, Shibakoen, 1-Chome, Minato-Ku, Tokyo, M0 105-00116
  • LEI353800P843RLCDBLNT174
  • StatusActive4
  • LEI statusIssued and current4
  • Registered address丸の内一丁目4番1号, 100-8233 東京都 千代田区, Japan4
  • Registered withLegal Affairs Bureau, 0100-01-1395554

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Marunouchi Eiraku Building
Photo: Kakidai, CC BY-SA 4.0, via Wikimedia Commons8

Sumitomo Mitsui Trust Group, Inc. (三井住友トラストグループ株式会社, Mitsui Sumitomo Torasuto Gurupu Kabushiki Gaisha), formerly Chuo Mitsui Trust Holdings, Inc., is a Japanese financial holding company headquartered in Chiyoda, Tokyo. It provides an assortment of financial products to retail and wholesale customers, with a focus on asset management, financial brokerage, and real estate services.3

Corporate structure

Sumitomo Mitsui Trust Group sits at the top of its group. 152 entities, 10 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

Major holders of Sumitomo Mitsui Trust Group

  • BlackRock Filed SC 13G/A on Sumitomo Mitsui Trust Group, latest Feb 6, 2024 (3 filings since Feb 3, 2022)
  • Sumitomo Mitsui Trust Group 東京都 千代田区, Japan
    • Sumitomo Mitsui Trust Bank 東京都 千代田区, Japan
      • DOCOMO SMTB Net Bank Subsidiary · Izumi Garden Tower
      • SuMiT Liquidity Reserve Limited Subsidiary · Grand Cayman Grand Cayman, Cayman Islands
      • Sumitomo Mitsui Trust (Hong Kong) Limited Subsidiary · Central and Western District, Hong Kong
        • CEDAR INFRASTRUCTURE FUND Fund · Central, Hong Kong
        • PEP Global Fund 29 EUR Fund · Central And Western District, Hong Kong
      • Sumitomo Mitsui Trust Bank (U.S.A.) Limited Subsidiary · Hoboken, New Jersey, United States
      • ri ben san jing zhu you xin tuo yin hang gu fen you xian gong si shang hai fen hang (日本三井住友信托银行股份有限公司上海分行) Branch · Chiyoda-ku Tokyo, Japan
      • 三井住友信託銀行信託口/00006717 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00011825 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00012235 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00012236 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00012686 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00012697 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00013079 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00013196 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00013240 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00013562 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00013566 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00013808 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00013859 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00014543 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00014634 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00014635 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00014638 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00014639 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00014647 Fund · 東京都 千代田区, Japan
      • 三井住友信託銀行信託口/00014771 Fund · 東京都 千代田区, Japan
      • and 40 more
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    • and 26 more

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G; stakes of 5% or more it reported on Schedules 13D and 13G (43 companies); owners and owned firms from Form ADV, the registration investment advisers file with the SEC. Each entity in the chart links to its source.

The story

Chuo Mitsui

SMT's earliest predecessor was Mitsui Trust Company Ltd, established in March 1924 with a capital of 30 million yen. In March 1948, it changed its name to Tokyo Trust & Banking Co., Ltd. It changed its name again to Mitsui Trust and Banking Company, Ltd in 1952.

The Chuo Trust & Banking Co., Ltd. was established in May 1962 with a capital of 2.5 billion yen and support from Tokai Bank, Dai-Ichi Bank, the Industrial Bank of Japan and other financial institutions. It took over Tokai and Dai-Ichi's trust businesses as well as the stock transfer agency business of Japan Securities Agents, Ltd. It acquired the Honshu operations of Hokkaido Takushoku Bank in 1998.

Mitsui Trust and Chuo Trust signed a merger agreement in May 1999 and completed their merger in April 2000, becoming Chuo Mitsui Trust and Banking Co., Ltd. (中央三井信託銀行株式会社). In 2001, Chuo Mitsui announced its plans to establish a new bank holding company known as Mitsui Trust Holdings, Inc., which was formed in February 2002. It changed its name to Chuo Mitsui Trust Holdings, Inc. (中央三井トラスト・ホールディングス株式会社) in 2007.

Sumitomo Trust

Sumitomo Trust Co., Ltd. was founded in July 1925 with capital of 20 million yen and its headquarters in Awajicho, Osaka. It changed its name to Fuji Trust & Banking Co., Ltd. in 1948 and adopted the name Sumitomo Trust and Banking Co., Ltd. (住友信託銀行株式会社) in 1952. In 1962 it moved its headquarters to the Sumitomo Building in Kitahama, Osaka.

Merger

Chuo Mitsui agreed to merge with The Sumitomo Trust and Banking Co., Ltd. in November 2009 and formed a holding company, Sumitomo Mitsui Trust Holdings, Inc., through a share exchange between Chuo Mitsui and Sumitomo Trust in April 2011. The three main trust banks under this holding company merged in April 2012 to form Sumitomo Mitsui Trust Bank, Ltd. SMTB became the largest trust bank in Japan and the fifth-largest commercial bank overall measured by assets.

SMTB was fined for insider trading in 2012 after a Chuo Mitsui fund manager was found to have traded on information leaked from Nomura Securities regarding a 2010 share issuance by Mizuho Financial Group.

From Wikipedia’s article on Sumitomo Mitsui Trust Holdings, shared under CC BY-SA 4.0.7

Subsidiaries and ownership

Subsidiaries

From Wikidata.1

Former names

  • Sumitomo Mitsui Trust Group, Inc.Nov 5, 2024 to Jul 30, 20266
  • Sumitomo Mitsui Trust Holdings, Inc.Apr 1, 2011 to Jul 19, 20246
  • Chuo Mitsui Trust Holdings, Inc.Nov 6, 2009 to Apr 1, 20116

Timeline

  1. 2002Founded Founded1

Filings

23 filings to the SEC since October 2021: 3 large holders, 20 other. The latest 20:

  1. Jul 30, 202613F-HR EDGAR
  2. Apr 30, 202613F-HR EDGAR
  3. Jan 23, 202613F-HR EDGAR
  4. Oct 27, 202513F-HR EDGAR
  5. Jul 31, 202513F-HR EDGAR
  6. Apr 25, 202513F-HR EDGAR
  7. Jan 28, 202513F-HR EDGAR
  8. Nov 5, 202413F-HR EDGAR
  9. Jul 19, 202413F-HR EDGAR
  10. Apr 19, 202413F-HR EDGAR
  11. Feb 6, 2024SC 13G/A EDGAR
  12. Jan 30, 202413F-HR EDGAR
  13. Oct 30, 202313F-HR EDGAR
  14. Jul 31, 202313F-HR EDGAR
  15. Apr 27, 202313F-HR EDGAR
  16. Feb 1, 2023SC 13G/A EDGAR
  17. Jan 30, 202313F-HR EDGAR
  18. Oct 21, 202213F-HR EDGAR
  19. Jul 26, 202213F-HR EDGAR
  20. Apr 27, 202213F-HR EDGAR

The 23 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

  • BlackRockSC 13G/A, 3 filings Feb 3, 2022 to Feb 6, 20249

Stakes it holds

Sumitomo Mitsui Trust Group has told the SEC it owns more than 5% of 43 companies, latest first (Schedules 13D and 13G).

All 43 companies

SEC filer profile

How Sumitomo Mitsui Trust Group is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

  • Name on EDGARSumitomo Mitsui Trust Group, Inc.2
  • CIK0001475365
  • Incorporated inJapan2
  • Industry code (SIC)6029 Commercial Banks, NEC2
  • SEC reviewing officeOffice of Finance, Division of Corporation Finance2
  • Business address1-1, Shibakoen, 1-Chome, Minato-Ku, Tokyo, M0 105-00112
  • Mailing address1-4-1, Marunouchi, Chiyoda-Ku, Tokyo, M0 100-82332
  • Phone81-3-6256-60002
  • On EDGAR sinceNov 6, 20092
  • Filings331 in all: SC 13G/A (131), 13F-HR (61), SC 13G (61), 6-K (32), 425 (16), SCHEDULE 13G/A (16), SCHEDULE 13G (6), EFFECT (2)2
    All 14 form types

    15F-15D (1), 20-F (1), 424B3 (1), F-4 (1), F-6 (1), F-N (1)

  • Latest filingsAnnual report (20-F) Aug 30, 2011

Sources

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