MGIC Investment Corp
Ownership
Ownership Structure
Who owns MGIC Investment Corp (MTG)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 93.2% of the shares are freely tradable; institutional investors hold 103.8%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 10.69 | 21,931,461 | -5.2 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 8.50 | 17,432,643 | -2.9 | 06/30/2026 |
| Dimensional Fund Advisors, Inc. | 6.73 | 13,803,323 | +1.1 | 06/30/2026 |
| AQR Capital Management LLC | 5.49 | 11,267,784 | +2.5 | 06/30/2026 |
| JPMorgan Chase & Co | 5.40 | 11,079,911 | -1.0 | 06/30/2026 |
| LSV Asset Management | 4.75 | 9,748,064 | -1.5 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.65 | 9,547,384 | -1.4 | 06/30/2026 |
| State Street Corp | 3.70 | 7,592,399 | -3.0 | 06/30/2026 |
| American Century Companies Inc | 3.51 | 7,201,461 | +21.6 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.56 | 7,307,989 | +0.0 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Mattke Timothy J. | Chief Executive Officer | 843,778 | 23,963,307 $ | Oct 1, 2026 | direct |
| Miosi Salvatore A | President & COO | 440,951 | 12,523,019 $ | Oct 1, 2026 | direct |
| Colson Nathaniel H | Officer EVP, CFO & CRO | 321,226 | 9,122,818 $ | Sep 24, 2026 | direct |
| Maggio Paula C | EVP and General Counsel | 149,620 | 4,249,199 $ | Aug 7, 2026 | direct |
| Chaplin C Edward | Director | 44,868 | 1,274,252 $ | Aug 20, 2026 | direct |
| Hartzell Jay C. | Director | 35,622 | 1,011,664 $ | Aug 20, 2026 | direct |
| Sculley Sheryl L. | Director | 35,288 | 1,002,182 $ | Aug 20, 2026 | direct |
| Lowman Teresita M. | Director | 34,533 | 980,745 $ | Aug 20, 2026 | direct |
| Zandi Mark | Director | 33,975 | 964,888 $ | Aug 20, 2026 | direct |
| Culver Curt S | Director | 21,668 | 615,370 $ | Aug 20, 2026 | direct |
| Thompson Michael Leal | Director | 18,587 | 527,869 $ | Aug 20, 2026 | direct |
| Klein Martin P | Director | 6,515 | 185,012 $ | Aug 20, 2026 | direct |
| O'Leary-Gill Daniela | Director | 6,493 | 184,400 $ | Aug 20, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 1, 2026 | Miosi Salvatore A | President & COO | Sell | 30,000 | 26.06 | 781,800 |
| Oct 1, 2026 | Mattke Timothy J. | Chief Executive Officer | Sell | 137,114 | 26.24 | 3,597,186 |
| Sep 24, 2026 | Colson Nathaniel H | Officer EVP, CFO & CRO | Sell | 20,000 | 29.48 | 589,600 |
| Sep 1, 2026 | Miosi Salvatore A | President & COO | Sell | 30,000 | 30.73 | 921,900 |
| Aug 20, 2026 | O'Leary-Gill Daniela | Director | Other | 28 | – | – |
| Aug 20, 2026 | Lowman Teresita M. | Director | Other | 189 | – | – |
| Aug 20, 2026 | Hartzell Jay C. | Director | Other | 195 | – | – |
| Aug 20, 2026 | Sculley Sheryl L. | Director | Other | 130 | – | – |
| Aug 20, 2026 | Klein Martin P | Director | Other | 36 | – | – |
| Aug 20, 2026 | Zandi Mark | Director | Other | 28 | – | – |
| Aug 20, 2026 | Thompson Michael Leal | Director | Other | 28 | – | – |
| Aug 20, 2026 | Chaplin C Edward | Director | Other | 145 | – | – |
| Aug 20, 2026 | Culver Curt S | Director | Other | 28 | – | – |
| Aug 7, 2026 | Maggio Paula C | EVP and General Counsel | Sell | 20,000 | 30.30 | 606,000 |
| Aug 5, 2026 | Mattke Timothy J. | Chief Executive Officer | Sell | 137,113 | 30.52 | 4,184,277 |
| Aug 3, 2026 | Miosi Salvatore A | President & COO | Sell | 30,000 | 29.70 | 891,000 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.