Oki Matsumoto
Chairman at
MONEX GROUP, INC.
Net worth: 108 M $ as of 2026-07-30
Profile
Oki Matsumoto is President, CEO & Representative Director at Monex, Inc. since 2004.
Chairmanship roles include Monex Group, Inc. since 2023, TradeStation Group, Inc. since 2011, Coincheck, Inc. since 2019, and Japan Catalyst, Inc. Vice Chairman at Human Rights Watch, Inc. Independent Director at Mastercard, Inc. since 2016.
Holds director positions at Mastercard International, Inc., ToposWare, Inc., Coincheck Group NV, and.
3iQ Digital Holdings, Inc. Member of the Council on Foreign Relations, Inc., professor at the University of Tokyo, commissioner at Japan Securities Dealers Association, and trustee at The International House of Japan, Inc. Formerly director at Tokyo Stock Exchange, Inc. from 2008 to 2013.
Independent Director at SBI Shinsei Bank Ltd. in 2010 and at Kakaku.com, Inc. from 2010 to 2017.
Held director roles at Nikko Beans, Inc., Jins Holdings, Inc., Tokyo Stock Exchange Group, Inc., and Uzabase, Inc. Partner at The Goldman Sachs Group, Inc. from 1994 to 1998 and General Partner & Co-Head-Fixed Income Business at Goldman Sachs Japan Co., Ltd. Education includes graduate degree from the University of Tokyo in 1987.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
MONEX GROUP, INC. 9.22% | 2025-09-29 | 23,190,700 ( 9.22% ) | 103 M $ | 2026-07-30 |
| 2026-06-20 | 8,594 ( 0% ) | 5 M $ | 2026-07-30 | |
Ishin Group
 Ishin Group Packaged SoftwareTechnology Services Provides business-to-government platform development, PR and media services 1.1% | 2025-09-29 | 21,300 ( 1.1% ) | 91 768 $ | 2026-07-30 |
Oki Matsumoto active positions
| Companies | Position | Start |
|---|---|---|
| MONEX GROUP, INC. | Chairman | 2023-05-31 |
| MASTERCARD, INC. | Director/Board Member | 2016-06-27 |
| COINCHECK GROUP N.V. | Director/Board Member | - |
TradeStation Group, Inc.
 TradeStation Group, Inc. Packaged SoftwareTechnology Services Develops trading platforms and tools | Chairman | 2011-05-31 |
ToposWare, Inc
 ToposWare, Inc Packaged SoftwareTechnology Services Develops blockchain ecosystem powered by zero-knowledge proofs | Director/Board Member | - |
Mastercard International, Inc.
 Mastercard International, Inc. Packaged SoftwareTechnology Services Operates as a payment technology company | Director/Board Member | - |
The International House of Japan, Inc.
 The International House of Japan, Inc. Services to the Health IndustryHealth Services Operates as a foundation that supports cultural exchanges | Director/Board Member | - |
Council on Foreign Relations, Inc.
 Council on Foreign Relations, Inc. Investment Trusts/Mutual FundsMiscellaneous Functions as a foundation or endowment | Corporate Officer/Principal | - |
Japan Catalyst, Inc.
 Japan Catalyst, Inc. Investment ManagersFinance Provides investment advice | Chairman | - |
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Former positions of Oki Matsumoto
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Training of Oki Matsumoto
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
70
1st degree connections
24
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 24 |
|---|---|
The Goldman Sachs Group, Inc.
 The Goldman Sachs Group, Inc. Investment Banks/BrokersFinance Provides investment banking, asset, wealth management and platform services | Finance |
TradeStation Group, Inc.
TradeStation Group, Inc. Packaged SoftwareTechnology Services Develops trading platforms and tools | Technology Services |
Mastercard, Inc.
 Mastercard, Inc. Finance/Rental/LeasingFinance Provides payment processing and credit & debit card services | Finance |
Tokyo Stock Exchange, Inc.
 Tokyo Stock Exchange, Inc. Investment Banks/BrokersFinance Provides securities exchange services | Finance |
Monex, Inc.
 Monex, Inc. Investment Banks/BrokersFinance Operates as an online securities brokerage company | Finance |
SBI Shinsei Bank Ltd.
 SBI Shinsei Bank Ltd. Regional BanksFinance Provides banking services | Finance |
Kakaku.com, Inc.
 Kakaku.com, Inc. Other Consumer ServicesConsumer Services Operates an online electronic commerce portal and provides insurance products and consulting services | Consumer Services |
Nikko Beans, Inc.
 Nikko Beans, Inc. Investment Banks/BrokersFinance Provides on-line securities brokerage services | Finance |
Monex Group, Inc.
 Monex Group, Inc. Financial ConglomeratesFinance Operates a holding company whose subsidiary provides securities investment, contract trading, cryptocurrency exchange and real estate rental services | Finance |
Goldman Sachs Japan Co., Ltd.
 Goldman Sachs Japan Co., Ltd. Investment Banks/BrokersFinance Provides brokerage services | Finance |
Council on Foreign Relations, Inc.
Council on Foreign Relations, Inc. Investment Trusts/Mutual FundsMiscellaneous Functions as a foundation or endowment | Miscellaneous |
University of Tokyo
 University of Tokyo Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Jins Holdings, Inc.
 Jins Holdings, Inc. Medical SpecialtiesHealth Technology Operates as a holding company whose subsidiaries produces, distributes and sells eyewear products | Health Technology |
Mastercard International, Inc.
Mastercard International, Inc. Packaged SoftwareTechnology Services Operates as a payment technology company | Technology Services |
Japan Securities Dealers Association
 Japan Securities Dealers Association Investment Banks/BrokersFinance Operates the Japan Securities Dealers Association | Finance |
Human Rights Watch, Inc.
 Human Rights Watch, Inc. Miscellaneous Commercial ServicesCommercial Services Protects human rights | Commercial Services |
The International House of Japan, Inc.
The International House of Japan, Inc. Services to the Health IndustryHealth Services Operates as a foundation that supports cultural exchanges | Health Services |
Tokyo Stock Exchange Group, Inc.
 Tokyo Stock Exchange Group, Inc. Investment Banks/BrokersFinance Operates as a holding company with interests in stock exchange management and its related businesses | Finance |
Uzabase, Inc.
 Uzabase, Inc. Packaged SoftwareTechnology Services Operates business intelligence platform that provides SaaS, AI, automation and digital transformation solutions | Technology Services |
Coincheck, Inc.
 Coincheck, Inc. Investment Banks/BrokersFinance Provides crypto currency exchange services | Finance |
ToposWare, Inc
ToposWare, Inc Packaged SoftwareTechnology Services Develops blockchain ecosystem powered by zero-knowledge proofs | Technology Services |
Japan Catalyst, Inc.
Japan Catalyst, Inc. Investment ManagersFinance Provides investment advice | Finance |
Coincheck Group BV
 Coincheck Group BV Investment Banks/BrokersFinance Provides cryptocurrency exchange services | Finance |
3iQ Digital Holdings, Inc.
 3iQ Digital Holdings, Inc. Investment ManagersFinance Operates as a crypto asset management platform | Finance |
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