Magnolia Oil & Gas
MGY · NYSE
Who owns MGY
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 42.4% of MGY’s shares.
- BlackRock Institutional Trust Company, N.A.11.6%
- Vanguard Portfolio Management, LLC6.5%
- American Century Investment Management, Inc.4.6%
- State Street Investment Management (US)4.2%
- Next 6 largest institutions15.5%
- All other shareholders57.6%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 27.41M | 11.57% |
| Vanguard Portfolio Management, LLC | 15.34M | 6.47% |
| American Century Investment Management, Inc. | 11.01M | 4.65% |
| State Street Investment Management (US) | 9.94M | 4.20% |
| Vanguard Capital Management, LLC | 7.66M | 3.23% |
| Dimensional Fund Advisors, L.P. | 7.12M | 3.00% |
| Janus Henderson Investors | 6.43M | 2.71% |
| Arrowstreet Capital, Limited Partnership | 5.46M | 2.31% |
| T. Rowe Price Investment Management, Inc. | 5.18M | 2.19% |
| Geode Capital Management, L.L.C. | 4.80M | 2.03% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Small-Cap ETF | 14.02M | 5.92% |
| Vanguard Total Stock Market Index Fund | 7.36M | 3.11% |
| Avantis US Small Cap Value ETF | 7.00M | 2.95% |
| iShares Russell 2000 ETF | 6.00M | 2.53% |
| Vanguard Small-Cap Index Fund | 5.32M | 2.24% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $326.93K (4 trades) of MGY on the open market, with no sales.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Corales Brian | Tax withholding | 4.80K | $118.70K |
| Corales Brian | Award | 12.19K | — |
| Yang Timothy D. | Tax withholding | 5.27K | $130.38K |
| Yang Timothy D. | Award | 13.39K | — |
| Stavros Christopher G | Tax withholding | 9.86K | $243.81K |
| Stavros Christopher G | Award | 25.04K | — |
| Acosta Arcilia | Award | 80 | — |
| Khani David M. | Buy | 54 | $1.45K |
| Ropp Ralph Lewis | Buy | 5.00K | $123.13K |
| Khani David M. | Buy | 8.00K | $200.00K |
Congressional trades
Disclosed by members of Congress over the last 12 months
| Member | Type | Amount | Traded |
|---|---|---|---|
| Gil CisnerosHouse | Sale | $15K–$50K | Jan 9, 2026 |
| Lisa McClainHouse | Sale | $1K–$15K | Oct 31, 2025 |
| Lisa McClainHouse | Sale | $1K–$15K | Oct 30, 2025 |
Short interest
Settled Sep 30, 2026
- Shares short
- 26.24M
- Days to cover
- 5.39
- % of shares outstanding
- 11.08%
- Average daily volume
- 4.87M
- Change since last report
- +4.5%
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