Filing Flows › Magnolia Oil & Gas (MGY) › Who owns the stock
Who owns Magnolia Oil & Gas (MGY) stock
389 funds reported Magnolia Oil & Gas (MGY) shares in their latest 13F filings, worth $5.7B in all. The largest holder is BlackRock ($818M). Last quarter 191 funds added to their stakes and 174 cut them. Members of Congress and other officials disclosed 1 trade (0 buys, 1 sales).
Largest holders (13F)
| Fund | Shares | Value | Change | Quarter |
|---|---|---|---|---|
| BlackRock | 31,972,219 | $818M | increase | 2026-06-30 |
| Vanguard Group | 19,644,960 | $430M | decrease | 2025-12-31 |
| Vanguard Portfolio Management LLC | 15,341,201 | $392M | increase | 2026-06-30 |
| American Century Companies | 11,011,458 | $282M | increase | 2026-06-30 |
| State Street | 9,941,466 | $254M | increase | 2026-06-30 |
| Janus Henderson Group | 6,279,636 | $198M | increase | 2026-03-31 |
| Vanguard Capital Management LLC | 7,663,263 | $196M | increase | 2026-06-30 |
| Dimensional Fund Advisors LP | 7,117,449 | $182M | increase | 2026-06-30 |
| Jupiter Topco LLC | 6,427,893 | $164M | base | 2026-06-30 |
| Arrowstreet Capital, Limited Partnership | 5,463,526 | $140M | decrease | 2026-06-30 |
| T. Rowe Price Investment Management | 5,180,518 | $133M | decrease | 2026-06-30 |
| Alliancebernstein L.P. | 4,122,434 | $130M | decrease | 2026-06-30 |
| Geode Capital Management, LLC | 4,802,973 | $123M | increase | 2026-06-30 |
| Nomura Asset Management International | 4,311,973 | $110M | decrease | 2026-06-30 |
| Bank of America | 4,253,346 | $109M | increase | 2026-06-30 |
Trades by Congress and other officials
| Date | Who | Trade | Amount |
|---|---|---|---|
| 2025-10-31 | Lisa McClain | sale | $1K–$15K |
Magnolia Oil & Gas' latest quarter
Magnolia Oil & Gas, Q3 2026: revenue $514M (+58% year over year), operating margin 30.1%, net earnings $80.5M, operating cash flow $369M. The chart follows the revenue to costs, profit and cash.
Questions
Who owns the most MGY stock?
By the latest 13F filings: BlackRock ($818M); Vanguard Group ($430M); Vanguard Portfolio Management LLC ($392M); American Century Companies ($282M); State Street ($254M).
Has Congress traded MGY stock?
Officials disclosed 1 trade on file: 0 buys and 1 sales. The latest: Lisa McClain, sale on 2025-10-31.
What is the short interest in MGY?
25,683,746 shares were sold short at the 2026-10-15 settlement, -2.14% of the float.
Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.