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. 93.1% of the shares are freely tradable; institutional investors hold 103.8%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 11.28 | 23,142,361 | +0.4 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 8.75 | 17,953,957 | +0.0 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 6.73 | 13,803,323 | +1.1 | 06/30/2026 |
| JPMorgan Chase & Co | 5.46 | 11,191,852 | -0.3 | 03/31/2026 |
| AQR Capital Management LLC | 5.36 | 10,988,162 | -5.4 | 03/31/2026 |
| LSV Asset Management | 4.75 | 9,748,064 | -1.5 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.72 | 9,681,492 | +0.0 | 03/31/2026 |
| State Street Corp | 3.82 | 7,828,899 | -1.7 | 03/31/2026 |
| 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 | 3.61 | 7,406,585 | +0.0 | 08/31/2026 |
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 | 980,892 | 29,132,504 $ | Aug 5, 2026 | direct |
| Miosi Salvatore A | President & COO | 470,951 | 13,987,255 $ | Sep 1, 2026 | direct |
| Maggio Paula C | EVP and General Counsel | 149,620 | 4,443,704 $ | Aug 7, 2026 | direct |
| Chaplin C Edward | Director | 44,868 | 1,332,581 $ | Aug 20, 2026 | direct |
| Hartzell Jay C. | Director | 35,622 | 1,057,973 $ | Aug 20, 2026 | direct |
| Sculley Sheryl L. | Director | 35,288 | 1,048,056 $ | Aug 20, 2026 | direct |
| Lowman Teresita M. | Director | 34,533 | 1,025,639 $ | Aug 20, 2026 | direct |
| Zandi Mark | Director | 33,975 | 1,009,056 $ | Aug 20, 2026 | direct |
| Culver Curt S | Director | 21,668 | 643,538 $ | Aug 20, 2026 | direct |
| Thompson Michael Leal | Director | 18,587 | 552,032 $ | Aug 20, 2026 | direct |
| Klein Martin P | Director | 6,515 | 193,481 $ | Aug 20, 2026 | direct |
| O'Leary-Gill Daniela | Director | 6,493 | 192,840 $ | 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 |
|---|---|---|---|---|---|---|
| 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: September 17, 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.