MGIC Investment Corporation
MGIC Investment Corporation (MTG) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MTG · as of Sep 30, 2025
Ownership Breakdown
509
Institutional Holders
▲ 34 vs Q2
$6.20B
Total Inst. Value
▼ $236.77M vs Q2
211.49M
Shares Outstanding
freeFloat 93.33%
218.57M
13F Shares Held
▼ 12.82M vs Q2
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
MTG largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC surety insurance | 30.78M | 13.03% | 13.03% | $873.31B | Nov 7, 2025 | ▼ 742.1K |
BLACKROCK, INC. surety insurance | 23.03M | 9.75% | 9.75% | $653.47B | Nov 12, 2025 | ▼ 77.0K |
JPMORGAN CHASE & CO surety insurance | 15.47M | 6.54% | 6.54% | $438.78B | Nov 26, 2025 | ▼ 2.86M |
DIMENSIONAL FUND ADVISORS LP surety insurance | 14.08M | 5.96% | 5.96% | $399.34B | Nov 12, 2025 | ▼ 25.3K |
LSV ASSET MANAGEMENT surety insurance | 10.32M | 4.37% | 4.37% | $292.72B | Nov 6, 2025 | ▼ 265.7K |
AQR CAPITAL MANAGEMENT LLC surety insurance | 8.84M | 3.74% | 3.74% | $250.93B | Nov 14, 2025 | ▲ 2.51M |
STATE STREET CORP surety insurance | 8.15M | 3.45% | 3.45% | $231.12B | Nov 14, 2025 | ▼ 224.0K |
GEODE CAPITAL MANAGEMENT, LLC surety insurance | 5.22M | 2.21% | 2.21% | $153.62B | Nov 12, 2025 | ▲ 485.2K |
ALLIANZ ASSET MANAGEMENT GMBH surety insurance | 4.96M | 2.10% | 2.10% | $140.77B | Nov 4, 2025 | ▼ 436.3K |
NORTHERN TRUST CORP surety insurance | 4.56M | 1.93% | 1.93% | $129.41B | Nov 14, 2025 | ▲ 441.8K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
25
Increased
+10.19M shares0
New Positions
first time holders24
Decreased
−12.65M shares0
Sold Out
fully exitedNet shares change (top 50)
2.46M
+10.19M / −12.65M
Net new holders
+1
0 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
MTG insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
13
Buy transactions
3
Sell transactions
4.33
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 |
|---|---|---|---|---|---|---|---|
Maggio Paula C EVP and General Counsel | May 29, 2026 | Sale | 20,937 | $25.55 | $534.9K | 169.6K | Form 4 ↗ |
Zandi Mark director | May 21, 2026 | Award | 275.606 | — | — | 48.7K | Form 4 ↗ |
Zandi Mark director | May 21, 2026 | Award | 29.075 | — | — | 33.9K | Form 4 ↗ |
Sculley Sheryl L. director | May 21, 2026 | Award | 134.278 | — | — | 35.2K | Form 4 ↗ |
Sculley Sheryl L. director | May 21, 2026 | Award | 111.866 | — | — | 19.7K | Form 4 ↗ |
CULVER CURT S director | May 21, 2026 | Award | 29.075 | — | — | 21.6K | Form 4 ↗ |
Hartzell Jay C. director | May 21, 2026 | Award | 200.681 | — | — | 35.4K | Form 4 ↗ |
Hartzell Jay C. director | May 21, 2026 | Award | 111.866 | — | — | 19.7K | Form 4 ↗ |
O'Leary-Gill Daniela director | May 21, 2026 | Award | 29.075 | — | — | 6.5K | Form 4 ↗ |
Klein Martin P director | May 21, 2026 | Award | 36.7 | — | — | 6.5K | 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
MGIC Investment Corporation (MTG) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 6.67%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of MGIC Investment Corporation is VANGUARD GROUP INC, holding approximately 30.78 million shares — equal to 13.03% of outstanding shares — as of September 30, 2025.
A total of 509 institutional investors currently hold MTG stock, with a combined institutional value of approximately $6.20 billion as of the most recent 13F filing period.
Frequently asked questions
MTG ownershipMGIC Investment Corporation (MTG) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is VANGUARD GROUP INC with a 13.03% stake. Company insiders hold 6.67%. Data sourced from SEC Form 13F as of September 30, 2025.