Magnolia Oil & Gas Corp
MGY- Exchange
- NYSE
- Industry
- Crude Petroleum & Natural Gas
- SEC CIK
- 0001698990
In the last 90 days, Magnolia Oil & Gas Corp insiders filed 3 open-market purchases and 0 sales; 411 institutions reported holding it in 13F filings for Q2 2026, worth $5.28B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Magnolia Oil & Gas Corp as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 406
- +37 vs. Q4 2025
- Shares held
- 203.8M
- +24.9M (+13.9%) vs. Q4 2025
- Total value
- $6.39B
- +$2.47B (+62.9%) vs. Q4 2025
- New holders
- 76
- 148 more added
- Sold out
- 39
- 138 more reduced
10 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MGY on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 411 | $5.28B |
| Q1 2026 | 406 | $6.39B |
| Q4 2025 | 379 | $4.37B |
| Q3 2025 | 373 | $4.92B |
| Q2 2025 | 385 | $4.85B |
| Q1 2025 | 407 | $5.51B |
| Q4 2024 | 383 | $5.15B |
| Q3 2024 | 367 | $5.44B |
| Q2 2024 | 347 | $5.60B |
| Q1 2024 | 323 | $5.78B |
| Q4 2023 | 297 | $4.19B |
| Q3 2023 | 288 | $4.41B |
| Q2 2023 | 281 | $4.14B |
| Q1 2023 | 276 | $4.37B |
| Q4 2022 | 295 | $4.56B |
| Q3 2022 | 280 | $3.83B |
| Q2 2022 | 283 | $4.14B |
| Q1 2022 | 251 | $4.47B |
| Q4 2021 | 234 | $3.55B |
| Q3 2021 | 240 | $3.23B |
| Q2 2021 | 206 | $2.83B |
| Q1 2021 | 190 | $2.07B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Magnolia Oil & Gas Corp; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Dimensional Fund Advisors LP | 7,028,781 | $221.9M | 0.05% | +394,419+5.9% | Added |
| Vanguard Capital Management LLC | 7,188,424 | $226.9M | 0.01% | +7,188,424 | New |
| State Street Corp | 9,496,275 | $299.8M | 0.01% | +695,468+7.9% | Added |
| American Century Companies Inc | 10,509,240 | $331.8M | 0.17% | −520,607−4.7% | Reduced |
| Vanguard Portfolio Management LLC | 12,983,395 | $409.9M | 0.02% | +12,983,395 | New |
| BlackRock, Inc. | 29,491,149 | $931.0M | 0.02% | +1,819,502+6.6% | Added |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −5,206,612−100.0% | Sold out |
| HITE Hedge Asset Management LLC | 0 | $0 | 0.00% | −1,454,388−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −614,682−100.0% | Sold out |
| Osterweis Capital Management Inc | 0 | $0 | 0.00% | −325,647−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −283,431−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −219,040−100.0% | Sold out |
| F/M Investments LLC | 0 | $0 | 0.00% | −205,569−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −171,100−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −169,213−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −164,266−100.0% | Sold out |
| Kingsview Wealth Management, LLC | 0 | $0 | 0.00% | −117,782−100.0% | Sold out |
| Ashton Thomas Private Wealth, LLC | 0 | $0 | 0.00% | −110,567−100.0% | Sold out |
| Sciencast Management LP | 0 | $0 | 0.00% | −91,515−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −61,032−100.0% | Sold out |
| MQS Management LLC | 0 | $0 | 0.00% | −44,178−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −33,844−100.0% | Sold out |
| Laurion Capital Management LP | 0 | $0 | 0.00% | −30,845−100.0% | Sold out |
| Penserra Capital Management LLC | 0 | $0 | 0.00% | −29,631−100.0% | Sold out |
| CWA Asset Management Group, LLC | 0 | $0 | 0.00% | −28,867−100.0% | Sold out |
| Jennison Associates LLC | 0 | $0 | 0.00% | −22,806−100.0% | Sold out |
| Aviva PLC | 0 | $0 | 0.00% | −21,447−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −18,368−100.0% | Sold out |
| Nomura Holdings Inc | 0 | $0 | 0.00% | −16,708−100.0% | Sold out |
| Jackson Creek Investment Advisors LLC | 0 | $0 | 0.00% | −16,472−100.0% | Sold out |
| Buckingham Strategic Partners | 0 | $0 | 0.00% | −14,852−100.0% | Sold out |
| PharVision Advisers, LLC | 0 | $0 | 0.00% | −12,753−100.0% | Sold out |
| Mackenzie Financial Corp | 0 | $0 | 0.00% | −11,665−100.0% | Sold out |
| Peirce Capital Management, LLC | 0 | $0 | 0.00% | −11,731−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −11,588−100.0% | Sold out |
| BTG Pactual Asset Management US LLC | 0 | $0 | 0.00% | −9,427−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −4,513−100.0% | Sold out |
| Maseco LLP | 0 | $0 | 0.00% | −1,004−100.0% | Sold out |
| DV Trading LLC | 0 | $0 | 0.00% | −600−100.0% | Sold out |
| Your Advocates Ltd., LLP | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Accent Capital Management, LLC | 0 | $0 | 0.00% | −393−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −85−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −22−100.0% | Sold out |
| Abound Wealth Management | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Nemes Rush Group LLC | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Brandywine Global Investment Management, LLC | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| Meritage Portfolio Management | – | – | – | – | Not filed |
| CIBC World Markets Corp | – | – | – | – | Not filed |
| Canandaigua National Bank & Trust Co | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |
| ORG Partners LLC | – | – | – | – | Not filed |
| Trust Co of Vermont | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |