Group Companies
As of September 30, 2025
| Company name |
In–house company/unit1 |
Main business |
Date of establishment |
Capital (million) |
Percentage of voting rights held by Mizuho Financial Group (%)5 |
| Mizuho Bank, Ltd. |
–
(See note 2) |
Banking |
May 7, 1923 |
JPY 1,404,065 |
100.0 |
| Mizuho Trust & Banking Co., Ltd. |
–
(See note 3) |
Trust and banking |
May 9, 1925 |
JPY 247,369 |
100.0 |
| Mizuho Securities Co., Ltd. |
–
(See note 4) |
Securities |
July 16, 1917 |
JPY 125,167 |
100.0 |
| Mizuho Research & Technologies, Ltd. |
RCU/
Other (IT & Systems G) |
Information technology, think tank consulting |
May 11, 1970 |
JPY 1,627 |
100.0 |
| Asset Management One Co., Ltd. |
AMC |
Investment management |
July 1, 1985 |
JPY 2,000 |
51.0 |
| Mizuho Innovation Frontier Co., Ltd. |
Other (Financial Control & Accounting G) |
Investment |
April 3, 2023 |
JPY 490 |
100.0 |
| Mizuho Americas LLC |
GCIBC |
Holding company |
June 20, 2016 |
USD 4,131 |
-
(100.0) |
| Custody Bank of Japan, Ltd. |
AMC |
Trust and banking |
June 20, 2000 |
JPY 51,000 |
27.0 |
| MI Digital Services Co., Ltd. |
Other (IT & Systems G) |
IT system administration and management |
June 24, 1985 |
JPY 20 |
35.0 |
| Mizuho Leasing Company, Limited |
CIBC |
General leasing |
December 1, 1969 |
JPY 46,925 |
23.1
(0.5) |
| Orient Corporation |
RBC |
Consumer finance services |
March 15, 1951 |
JPY 150,079 |
–
(48.9) |
| Mizuho Capital Co., Ltd. |
RBC |
Venture capital |
July 27, 1983 |
JPY 902 |
–
(65.0) |
| Line Credit Corporation |
RBC |
Lending |
May 1, 2018 |
JPY 100 |
–
(49.0) |
| Paypay Securities Corporation |
RBC |
Securities |
October 31, 2013 |
JPY 100 |
–
(24.7) |
| Rakuten Securities, Inc. |
RBC |
Securities |
March 24, 1999 |
JPY 19,495 |
–
(49.0) |
| Mizuho Group Services, Ltd. |
Other (Operations G) |
Subcontracted operations |
June 29, 2001 |
JPY 90 |
–
(100.0) |
- In-house company/unit acronyms: RBC: Retail & Business Banking Company, CIBC: Corporate & Investment Banking Company, GCIBC: Global Corporate & Investment Banking Company, AMC: Asset Management Company, GTU: Global Transaction Banking Unit, RCU: Research & Consulting Unit
- Mizuho Bank conducts business pertaining to all of the in-house companies and units.
- Mizuho Trust & Banking conducts business pertaining to all of the in-house companies and units except the GCIBC, the GTU, and the RCU.
- Mizuho Securities conducts business pertaining to all of the in-house companies and units except the GTU.
- In the column showing percentage of voting rights, figures in parentheses show the percentage of voting rights held indirectly through subsidiaries and affiliates.
Group subsidiaries and affiliates (Japanese text only) (PDF/684KB)
