Mizuho Financial Group, Inc.
Mizuho Financial Group, Inc. (MFG) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MFG · as of Mar 31, 2025
Ownership Breakdown
294
Institutional Holders
▲ 8 vs Q4
$889.48M
Total Inst. Value
▲ $99.39M vs Q4
12.19B
Shares Outstanding
freeFloat 20.00%
161.48M
13F Shares Held
▼ 79,723 vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
MFG largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
MORGAN STANLEY national commercial banks | 24.70M | 97.45% | 97.45% | $136.09B | May 15, 2025 | ▲ 1.90M |
LAZARD ASSET MANAGEMENT LLC national commercial banks | 22.37M | 88.25% | 88.25% | $123.25B | May 15, 2025 | ▼ 1.19M |
FMR LLC national commercial banks | 18.64M | 73.55% | 73.55% | $102.72B | May 12, 2025 | ▲ 620.0K |
BANK OF AMERICA CORP /DE/ national commercial banks | 14.92M | 58.85% | 58.85% | $82.18B | May 15, 2025 | ▼ 1.21M |
GOLDMAN SACHS GROUP INC national commercial banks | 14.51M | 57.24% | 57.24% | $79.94B | Jun 27, 2025 | ▲ 57.8K |
BLACKROCK, INC. national commercial banks | 10.94M | 43.17% | 43.17% | $60.28B | May 2, 2025 | ▲ 669.0K |
NORTHERN TRUST CORP national commercial banks | 9.95M | 39.27% | 39.27% | $54.85B | May 13, 2025 | ▲ 210.1K |
NATIXIS ADVISORS, L.P. national commercial banks | 3.36M | 13.27% | 13.27% | $18.53B | May 8, 2025 | ▼ 67.5K |
WELLS FARGO & COMPANY/MN national commercial banks | 2.89M | 11.39% | 11.39% | $15.91B | May 13, 2025 | ▼ 150.5K |
AMERICAN CENTURY COMPANIES INC national commercial banks | 2.85M | 11.23% | 11.23% | $15.68B | May 13, 2025 | ▲ 95.0K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
30
Increased
+6.74M shares2
New Positions
first time holders17
Decreased
−5.12M shares0
Sold Out
fully exitedNet shares change (top 50)
+1.62M
+6.74M / −5.12M
Net new holders
+15
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
MFG insider trading · insider activity
Source: SEC Form 4
5
Buy transactions
10
Sell transactions
0.50
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Kurosawa Tatsuya Group Chief Governance Officer | Jun 1, 2026 | D-Return | 288 | $12993.09 | $3.74M | 4.5K | Form 4 ↗ |
Komatsu Minori See Remarks | Jun 1, 2026 | D-Return | 264 | $11910.34 | $3.14M | 395 | Form 4 ↗ |
Koyama Takeshi Group Chief Strategy Officer | Jun 1, 2026 | D-Return | 420 | $18948.26 | $7.96M | 9.6K | Form 4 ↗ |
Samejima Makoto Group Chief Financial Officer | Jun 1, 2026 | D-Return | 682 | $30768.37 | $20.98M | 4.2K | Form 4 ↗ |
Akamatsu Fusae Group Chief Compliance Officer | Jun 1, 2026 | D-Return | 312 | $14075.85 | $4.39M | 466 | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Mizuho Financial Group, Inc. (MFG) is primarily owned by institutional investors, who hold approximately 1.3% of total shares outstanding. Company insiders own approximately 80.00%, while retail and public investors account for the remaining 18.67%.
The largest institutional shareholder of Mizuho Financial Group, Inc. is MORGAN STANLEY, holding approximately 24.70 million shares — equal to 97.45% of outstanding shares — as of March 31, 2025.
A total of 294 institutional investors currently hold MFG stock, with a combined institutional value of approximately $889,478,748 as of the most recent 13F filing period.
Frequently asked questions
MFG ownershipMizuho Financial Group, Inc. (MFG) is primarily owned by institutional investors, who hold approximately 1.3% of shares. The largest shareholder is MORGAN STANLEY with a 97.45% stake. Company insiders hold 80.00%. Data sourced from SEC Form 13F as of March 31, 2025.