Private company

Mizuho Securities

Logo: Mizuho, Public domain, via Wikimedia Commons5

Japanese investment banking company

Mizuho Securities Co., Ltd. (みずほ証券株式会社, Mizuho Shōken Kabushiki-gaisha) is a Japanese investment banking and securities firm. It is a wholly owned subsidiary of Mizuho Financial Group.3 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

Jul 16, 1917Founded1
  • Industryinvestment bank1
  • HeadquartersŌtemachi1
  • Websitewww.mizuho-sc.com
  • Legal formkabushiki gaisha1
  • LEI549300I6K0JHSVK8I0664
  • StatusActive4
  • LEI statusIssued and current4
  • Registered address大手町一丁目5番1号, 100-0004 東京都 千代田区, Japan4
  • Registered withLegal Affairs Bureau, 0100-01-0086874

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Otemachi 1st Square
Photo: Akonnchiroll, CC BY-SA 4.0, via Wikimedia Commons11

Mizuho Securities Co., Ltd. (みずほ証券株式会社, Mizuho Shōken Kabushiki-gaisha) is a Japanese investment banking and securities firm. It is a wholly owned subsidiary of Mizuho Financial Group.3

Corporate structure

Mizuho Securities is part of a group headed by Mizuho Financial Group. 61 entities, 13 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Mizuho Financial Group 東京都 千代田区, Japan
    • Mizuho Bank 東京都 千代田区, Japan
      • Mizuho Americas LLC New York, New York, United States
        • Greenhill & Co. New York, New York, United States
        • Mizuho Securities USA Inc. New York, New York, United States
        • ASSET MANAGEMENT ONE USA INC. Subsidiary · New York, New York, United States
          • 2 more
        • MIZUHO AMERICA LEASING LLC Subsidiary · Albany, New York, United States
        • Mizuho Americas Finance LLC Subsidiary · New York, New York, United States
        • MIZUHO AMERICAS SERVICES LLC Subsidiary · New York, New York, United States
        • Mizuho Bank (USA) Subsidiary · New York, New York, United States
        • MIZUHO CAPITAL MARKETS LLC Subsidiary · New York, New York, United States
        • MIZUHO MARKETS AMERICAS LLC Subsidiary · Wilmington, Delaware, United States
        • Mizuho Markets Cayman LP Subsidiary · George Town, Cayman Islands
      • LINE BANK Subsidiary · Shinagawa, Japan
      • Mizuho Bank Europe N.V. Subsidiary · 100% · Amsterdam, Netherlands
        • MIZUHO BANK EUROPE N.V. PARIS BRANCH Branch · Amsterdam, Netherlands
      • Акционерное общество "Мидзухо Банк (Москва)" Subsidiary · 100% · Москва, Russia
      • MIZUHO BANK MEXICO SA INSTITUCION DE BANCA MULTIPLE Subsidiary · 99.99% · Ciudad de México, Mexico
      • BANCO MIZUHO DO BRASIL S.A. Subsidiary · 東京, Japan
      • Mizuho Finance (Aruba) A.E.C. (Mizuho Finance (Aruba) A.V.V.) Subsidiary · Oranjestad, Aruba
      • PT BANK MIZUHO INDONESIA Subsidiary · Jakarta, Indonesia
      • rui sui yin hang zhong guo you xian gong si (瑞穗银行（中国）有限公司) Subsidiary · 上海市, China
      • Mizuho Bank, Ltd. Branch · Chiyoda-ku Tokyo, Japan
      • MIZUHO BANK, LTD. Branch · Chiyoda Ku, Japan
      • MIZUHO BANK, LTD. Branch · Chiyoda Ku, Japan
      • MIZUHO BANK, LTD. FILIALE DÜSSELDORF Branch · Chiyoda Ku, Japan
      • 주식회사 미즈호은행 Branch · Tokyo, Japan
    • Mizuho Securities 東京都 千代田区, Japan
    • Asset Management One Subsidiary · 70% · Tokyo
    • Mizuho Trust & Banking Subsidiary · 東京都 千代田区, Japan
    • Trust & Custody Services Bank Subsidiary · Tokyo
    • MIZUHO ALTERNATIVE INVESTMENTS, LLC Subsidiary · New York, New York, United States
    • MIZUHO CAPITAL INVESTMENT (JPY) 2 LIMITED Subsidiary · George Town, Cayman Islands
    • MIZUHO CAPITAL INVESTMENT (JPY) 3 LIMITED Subsidiary · George Town, Cayman Islands
    • MIZUHO FINANCE (CAYMAN) LIMITED Subsidiary · George Town, Cayman Islands
    • MIZUHO FINANCIAL GROUP (CAYMAN) 2 LIMITED Subsidiary · George Town, Cayman Islands
    • アセットマネジメントOne株式会社 Subsidiary · 東京都 千代田区, Japan
      • ASSET MANAGEMENT ONE INTERNATIONAL LTD. Subsidiary · London, United Kingdom
      • Mizuho Global Alternative Investments, Ltd. (アセットマネジメントOneオルタナティブインベストメンツ株式会社) Subsidiary · 東京都 千代田区, Japan
        • Cosmic Blue Project Finance SPC - Cosmic Blue PF Lily SP (Cosmic Blue Project Finance SPC – Cosmic Blue PF Lily SP) Fund · Chiyoda-ku, Japan
        • Cosmic Blue Project Finance Trust - Cosmic Blue PF Trust Lily Fund · Chiyoda-ku, Japan
      • 2026 Asia Equity Feeder Trust Fund · Chiyoda-ku Tokyo, Japan
      • 2026 Asia Equity SP Fund · Chiyoda-ku Tokyo, Japan
      • Global High Yield Bond Fund Currency Selection Fund · Chiyoda ku, Japan
      • JUNIversitas GB IG AMONE 1 Fund Unit Trust Fund · Chiyoda-ku Tokyo, Japan
      • New World AMO European Corporate Hybrid Security Fund Fund · Tokyo, Japan
      • Shinko Global Equity Fund (JPY-hedged) Fund · Chiyoda-ku, Japan
      • Shinko Global Equity Fund (Unhedged) Fund · Chiyoda-ku, Japan

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 Mizuho Securities 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)

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

The story

The current Mizuho Securities is established by a merger between Shinko Securities and the former Mizuho Securities. The former Shinko Securities (a former equity-method affiliate of Mizuho Financial Group) and the former Mizuho Securities (a former consolidated subsidiary of Mizuho Financial Group) merged on 7 May 2009 after it was postponed due to the 2008 financial crisis. The surviving entity was the former Shinko Securities, which changed its name to Mizuho Securities upon the merger. After the merger, Mizuho Financial Group holds 59.51% equity ownership of the new Mizuho Securities. In 2004, the Polaris Capital Group was divested, focusing on private equity investment. Mizuho Securities is involved in bond and stock trading, debt and equity financing, and advisory services for structured finance; its clients include financial institutions, public corporations, and institutional investors or firms. It also issues buy and sell ratings for publicly traded stocks. During the early 2000s, it was considered to be one of the "big four" firms that controlled a large portion of Japanese trading. In December 2005, an employee at Mizuho Securities placed an erroneous sell order of J-COM Co., Ltd. shares on the Tokyo Stock Exchange, resulting in a loss of approximately ¥40.7 billion.

Mizuho Securities then brought a case for its damages against the Tokyo Stock Exchange (TSE) as they could not cancel the order due to a fault in the TSE's computer system. The president of TSE resigned in 2005. Mizuho was awarded approximately ¥10.7 billion. Mizuho Securities operates several subsidiaries, including Mizuho Securities USA, where the CEO is Gerald Rizzieri.

From Wikipedia’s article on Mizuho Securities, shared under CC BY-SA 4.0.6

Subsidiaries and ownership

Parent company

Subsidiaries

Also owns

Subsidiaries (GLEIF)

From Wikidata.1 Ownership links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); each one cites its LEI record.

Acquisitions

  1. Nov 1, 2022Acquired Rakuten Securities1
  2. 2017Acquired PayPay Securities Corporation1
  3. Sep 13, 2004Acquired Polaris Capital Group1
  4. Succeeded Shinko Securities1

Timeline

  1. Nov 1, 2022Acquisition Acquired Rakuten Securities1
  2. Apr 1, 2019Parent Directly consolidated by Mizuho Financial Group4
  3. 2017Acquisition Acquired PayPay Securities Corporation1
  4. Sep 13, 2004Acquisition Acquired Polaris Capital Group1
  5. Jul 16, 1917Founded Founded1

Filings

21 filings to the SEC since October 2021: 21 other. The latest 20:

  1. Aug 18, 202613F-NT EDGAR
  2. May 7, 202613F-HR EDGAR
  3. Jan 30, 202613F-HR EDGAR
  4. Oct 30, 202513F-HR EDGAR
  5. Aug 12, 202513F-HR EDGAR
  6. Apr 22, 202513F-HR EDGAR
  7. Feb 12, 202513F-HR EDGAR
  8. Nov 6, 202413F-HR EDGAR
  9. Aug 1, 202413F-HR EDGAR
  10. May 2, 202413F-HR EDGAR
  11. Feb 2, 202413F-HR EDGAR
  12. Nov 1, 202313F-HR EDGAR
  13. Aug 1, 202313F-HR EDGAR
  14. Apr 25, 202313F-HR EDGAR
  15. Feb 7, 202313F-HR EDGAR
  16. Nov 2, 202213F-HR/A EDGAR
  17. Oct 28, 202213F-HR EDGAR
  18. Jul 21, 202213F-HR EDGAR
  19. Apr 15, 202213F-HR EDGAR
  20. Feb 4, 202213F-HR EDGAR

The 21 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.

SEC filer profile

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

  • Name on EDGARMizuho Securities Co. Ltd.2
  • CIK0001520309
  • Incorporated inJapan2
  • Fiscal year endsMarch 312
  • Business addressOtemachi First Square, 1-5-1, Otemachi, Chiyoda-Ku, Tokyo, M0 100-00042
  • Phone81-35208-32102
  • On EDGAR sinceMay 31, 20112
  • Filings37 in all: 13F-HR (30), 3 (3), 13F-HR/A (1), 13F-NT (1), CB (1), F-X (1)2

Sources

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

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