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.3 From Wikipedia, CC BY-SA 4.0

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Last updated Oct 19, 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

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

20 filings to the SEC since October 2021: 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. Jan 30, 202413F-HR EDGAR
  12. Oct 30, 202313F-HR EDGAR
  13. Jul 31, 202313F-HR EDGAR
  14. Apr 27, 202313F-HR EDGAR
  15. Jan 30, 202313F-HR EDGAR
  16. Oct 21, 202213F-HR EDGAR
  17. Jul 26, 202213F-HR EDGAR
  18. Apr 27, 202213F-HR EDGAR
  19. Feb 2, 202213F-HR EDGAR
  20. Oct 25, 202113F-HR EDGAR

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

Sources

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

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