The largest holder of Mizuho Financial stock is Nomura Asset Management Co., Ltd., with 121.5 million shares (4.97% of the company) as of September 25, 2026. The 10 largest holders together own 9.0%.
In Q2 2026, 470 institutional holdings reports listed 272.0 million shares worth $2.61 billion, up 6.7% in shares from Q1 2026.
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026).

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Nomura Asset Management Co., Ltd. | 121.5 million | 4.97% | – |
| Amova Asset Management Co., Ltd. | 49.6 million | 2.03% | – |
| Mizuho Financial Group, Inc. | 19.2 million | 0.78% | – |
| FIL Investments (Japan) Ltd. | 5.7 million | 0.23% | – |
| Canon, Inc. Pension Fund | 4.9 million | 0.20% | – |
| Sumitomo Mitsui Trust Asset Management Co., Ltd. | 4.7 million | 0.19% | – |
| Sjunde Ap Fonden (Investment Management) | 3.9 million | 0.16% | – |
| Dai Ichi Life Insurance Pension Fund | 3.5 million | 0.14% | – |
| East Japan Railway Company | 3.3 million | 0.13% | – |
| Lazard Japan Asset Management KK | 2.9 million | 0.12% | – |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 470 | 272.0 million | $2.6B |
| Q1 2026 | 430 | 255.0 million | $2.0B |
| Q4 2025 | 397 | 235.0 million | $1.7B |
| Q3 2025 | 349 | 202.0 million | $1.4B |
| Q2 2025 | 329 | 192.0 million | $1.1B |
| Q1 2025 | 300 | 162.0 million | $894.0M |
| Q4 2024 | 294 | 162.0 million | $791.0M |
| Q3 2024 | 270 | 139.0 million | $581.0M |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Nomura Asset Management Co., Ltd., with 4.97% of the company (as of September 25, 2026). Next: Amova Asset Management Co., Ltd. (2.03%) and Mizuho Financial Group, Inc. (0.78%).
470 institutional holdings reports listed Mizuho Financial shares in Q2 2026, 272.0 million shares in all worth $2.61 billion.