Magnolia Oil & Gas Corp (MGY)
Who owns Magnolia Oil & Gas Corp (MGY)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 77.5% of the shares are freely tradable; institutional investors hold 113.6%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 12.45 | 29,491,149 | +6.6 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.48 | 12,983,395 | +0.0 | 03/31/2026 |
| American Century Companies Inc | 4.43 | 10,509,240 | -4.7 | 03/31/2026 |
| State Street Corp | 4.01 | 9,496,275 | +7.9 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.03 | 7,188,424 | +0.0 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 2.97 | 7,028,781 | +5.9 | 03/31/2026 |
| HHG PLC | 2.65 | 6,279,636 | +2.8 | 03/31/2026 |
| Arrowstreet Capital Limited Partnership | 2.64 | 6,263,808 | +790.8 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.92 | 14,024,545 | +0.0 | 07/28/2026 |
| Avantis US Small Cap Value ETF | 2.78 | 6,590,224 | +0.1 | 07/29/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: August 3, 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.