Magnolia Oil & Gas Corp. Class AMGY
13F holders, Q4 2025 (December 31)379holders +6
47new positions
47sold out
8famous investors
$21.90avg. 13F price*
At the end of Q4 2025, 379 institutions reported holding Magnolia Oil & Gas Corp. Class A (MGY) in their 13F filings, up 6 from Q3 2025. 47 opened new positions and 47 sold out. The largest holders were BlackRock, Inc. ($605.7M), Vanguard Group Inc. ($430.0M) and American Century Companies Inc. ($241.4M). 8 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio) and Steve Cohen (0.0% of Point72 Asset Management's portfolio).
- Company
- Magnolia Oil & Gas Corp. Class A
- CUSIP
- 559663109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 47 | $66.4M |
| Exits | 47 | $213.6M |
All 13F filers, Q3 2025 → Q4 2025: 13,204,876 shares bought and 22,763,781 shares sold, net −9,558,905 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 379 holders
| BlackRock, Inc. | 0.01% | Add +0.8% | 27,671,647 | $605.7M |
| Vanguard Group Inc. | 0.01% | Reduce -1.2% | 19,644,960 | $430.0M |
| American Century Companies Inc. | 0.12% | Reduce -7.2% | 11,029,847 | $241.4M |
| State Street Corp. | 0.01% | Add +1.4% | 8,800,807 | $192.6M |
| Dimensional Fund Advisors LP | 0.03% | Add +4.2% | 6,634,362 | $145.2M |
| Janus Henderson Group PLC | 0.06% | Reduce -3.9% | 6,109,462 | $133.7M |
| TD Asset Management Inc | 0.10% | Add +26.6% | 5,671,819 | $124.2M |
| Epoch Investment Partners, Inc. | 0.66% | Add +28.8% | 5,330,064 | $116.7M |
| Wellington Management Group LLP | 0.02% | Reduce -0.4% | 5,206,612 | $114.0M |
| Nomura Asset Management International Inc. | 0.16% | — | 4,959,218 | $108.6M |
| Alliancebernstein L.P. | 0.03% | Add +1.9% | 4,747,597 | $103.9M |
| Geode Capital Management, LLC | 0.01% | Reduce -1.9% | 4,435,901 | $97.1M |
| Boston Trust Walden Corp | 0.69% | Add +5.7% | 4,168,085 | $91.2M |
| T. Rowe Price Investment Management, Inc. | 0.06% | Reduce -28.5% | 3,989,190 | $87.3M |
| Victory Capital Management Inc. | 0.04% | Reduce -9.3% | 3,591,921 | $78.6M |
| Silvercrest Asset Management Group LLC | 0.50% | Reduce -7.2% | 3,333,105 | $73.0M |
| Bank of America Corp. | 0.01% | Reduce -0.7% | 3,218,349 | $70.4M |
| GW&K Investment Management, LLC | 0.60% | Add +14.6% | 3,169,496 | $69.4M |
| Allspring Global Investments Holdings, LLC | 0.11% | Reduce -4.8% | 2,930,693 | $65.9M |
| Systematic Financial Management LP | 1.52% | Reduce -1.1% | 2,938,904 | $64.3M |
| Morgan Stanley | 0.00% | Add +0.7% | 2,796,949 | $61.2M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +2.4% | 2,492,892 | $54.6M |
| Loomis Sayles & Co. L P | 0.06% | Reduce -7.5% | 2,317,768 | $50.7M |
| Goldman Sachs Group Inc. | 0.01% | Reduce -29.1% | 2,225,450 | $48.7M |
| Stephens Investment Management Group LLC | 0.61% | Reduce -0.1% | 2,154,579 | $47.2M |
| Northern Trust Corp. | 0.01% | Reduce -7.1% | 2,071,111 | $45.3M |
| Manufacturers Life Insurance Company, The | 0.04% | Reduce -3.3% | 1,989,909 | $43.6M |
| Bank of New York Mellon Corp | 0.01% | Add +10.8% | 1,964,998 | $43.0M |
| Nuveen, LLC | 0.01% | Reduce -5.6% | 1,819,472 | $39.8M |
| Westwood Holdings Group Inc. | 0.32% | New | 1,761,843 | $38.6M |
| Principal Financial Group Inc. | 0.02% | Reduce -26.1% | 1,582,766 | $34.6M |
| HITE Hedge Asset Management LLC | 2.04% | Add +661.5% | 1,454,388 | $31.8M |
| Renaissance Technologies | 0.04% | Add +6.1% | 1,184,302 | $25.9M |
| Bessemer Group Inc. | 0.04% | Add +22.4% | 1,116,993 | $24.5M |
| JPMorgan Chase & Co. | 0.00% | Add +29.7% | 1,114,379 | $24.4M |
| SIR Capital Management, L.P. | 2.45% | Reduce -41.9% | 1,010,794 | $22.1M |
| Voloridge Investment Management, LLC | 0.07% | Add +116.4% | 969,487 | $21.2M |
| First Trust Advisors LP | 0.01% | Reduce -43.2% | 875,178 | $19.2M |
| UBS Group AG | 0.00% | Reduce -49.8% | 874,758 | $19.1M |
| Balyasny Asset Management L.P. | 0.03% | Reduce -54.5% | 807,988 | $17.7M |
| Public Sector Pension Investment Board | 0.06% | Reduce -5.7% | 758,600 | $16.6M |
| Brandywine Global Investment Management, LLC | 0.11% | Reduce -3.5% | 731,423 | $16.0M |
| Invesco Ltd. | 0.00% | Reduce -5.6% | 715,497 | $15.7M |
| Arrowstreet Capital, Limited Partnership | 0.01% | Reduce -49.8% | 703,189 | $15.4M |
| Gilder Gagnon Howe & Co. LLC | 0.15% | Reduce -5.4% | 653,948 | $14.3M |
| Heartland Advisors Inc. | 0.77% | Add +13.0% | 651,249 | $14.3M |
| Corigliano Investment Advisers, LLC | 4.80% | Add +38.6% | 617,000 | $13.5M |
| Jefferies Financial Group Inc. | 0.11% | Add +473.6% | 614,682 | $13.5M |
| Pacer Advisors, Inc. | 0.03% | Reduce -5.9% | 589,486 | $12.9M |
| Rhumbline Advisers | 0.01% | Reduce -1.2% | 571,336 | $12.5M |
| Aberdeen Group plc | 0.02% | Reduce -4.8% | 490,263 | $10.7M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.03% | Reduce -34.4% | 468,868 | $10.3M |
| State of Wisconsin Investment Board | 0.02% | Add +10.8% | 437,081 | $9.6M |
| Legal & General Group Plc | 0.00% | Reduce -5.7% | 436,753 | $9.6M |
| Foster Victor Wealth Advisors, LLC | 0.55% | Add +9.2% | 417,192 | $9.4M |
| Two Sigma Investments, LP | 0.01% | Reduce -39.6% | 426,009 | $9.3M |
| Diamond Hill Capital Management, LLC (Investment Advisor) | 0.05% | Add +210.5% | 414,817 | $9.1M |
| Man Group plc | 0.02% | Reduce -15.7% | 398,944 | $8.7M |
| Trexquant Investment LP | 0.08% | Add +188.0% | 392,595 | $8.6M |
| California Public Employees Retirement System | 0.00% | Add +4.2% | 381,297 | $8.3M |
| Envestnet Asset Management Inc. | 0.00% | Reduce -8.2% | 380,579 | $8.3M |
| Nordea Investment Management AB | 0.01% | Reduce -15.4% | 377,982 | $8.2M |
| Oberweis Asset Management Inc./ | 0.30% | No change | 376,300 | $8.2M |
| Millennium Management | 0.01% | Add +1253.0% | 371,528 | $8.1M |
| Barclays PLC | 0.00% | Reduce -34.9% | 362,229 | $7.9M |
| Jane Street Group, LLC | 0.01% | Reduce -38.6% | 361,863 | $7.9M |
| Citadel Advisors | 0.01% | Add +182.2% | 349,964 | $7.7M |
| Swiss National Bank | 0.00% | Add +0.8% | 347,000 | $7.6M |
| Barrow Hanley Mewhinney & Strauss LLC | 0.02% | Reduce -36.1% | 331,057 | $7.2M |
| Osterweis Capital Management Inc. | 0.41% | Reduce -27.6% | 325,647 | $7.1M |
| Ameriprise Financial Inc. | 0.00% | Reduce -11.6% | 322,814 | $7.1M |
| AQR Capital Management | 0.00% | Add +14.4% | 318,574 | $7.0M |
| HRT Financial LP | 0.02% | Add +187.4% | 315,510 | $6.9M |
| Wells Fargo & Company | 0.00% | Reduce -2.6% | 305,867 | $6.7M |
| Point72 Asset Management | 0.01% | New | 302,124 | $6.6M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.01% | Add +12.8% | 291,576 | $6.4M |
| ExodusPoint Capital Management, LP | 0.07% | Add +634.3% | 283,431 | $6.2M |
| D. E. Shaw & Co. | 0.00% | Add +347.3% | 276,774 | $6.1M |
| Illinois Municipal Retirement Fund | 0.07% | Add +14.7% | 270,892 | $5.9M |
| Phocas Financial Corp. | 0.76% | Reduce -0.2% | 266,299 | $5.8M |
| Raymond James Financial Inc. | 0.00% | Reduce -24.1% | 264,926 | $5.8M |
| Deutsche Bank AG | 0.00% | Add +28.3% | 257,096 | $5.6M |
| King Luther Capital Management Corp. | 0.02% | Reduce -1.3% | 249,601 | $5.5M |
| Edgestream Partners, L.P. | 0.15% | Add +104.1% | 242,321 | $5.3M |
| Sei Investments Co. | 0.01% | Add +23.6% | 235,749 | $5.2M |
| XTX Topco Ltd | 0.13% | Add +599.0% | 219,040 | $4.8M |
| F/m Investments LLC | 0.17% | Reduce -2.6% | 205,569 | $4.5M |
| T. Rowe Price Associates Inc. | 0.00% | Add +2.3% | 205,480 | $4.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -11.1% | 201,075 | $4.4M |
| Rafferty Asset Management, LLC | 0.01% | Add +9.5% | 196,800 | $4.3M |
| Creative Planning | 0.00% | Add +4.2% | 194,578 | $4.3M |
| Franklin Resources Inc. | 0.00% | Add +25.1% | 189,390 | $4.1M |
| Moody Aldrich Partners LLC | 0.77% | Reduce -7.3% | 189,348 | $4.1M |
| Fred Alger Management, LLC | 0.01% | Reduce -0.0% | 172,226 | $3.8M |
| Prudential Financial Inc. | 0.00% | Reduce -20.5% | 171,740 | $3.8M |
| Two Sigma Advisers, LP | 0.01% | Reduce -69.1% | 171,100 | $3.7M |
| Woodline Partners LP | 0.01% | Reduce -73.7% | 169,213 | $3.7M |
| California State Teachers Retirement System | 0.00% | Reduce -1.7% | 167,430 | $3.7M |
| Twinbeech Capital LP | 0.26% | Add +1325.2% | 164,266 | $3.6M |
| Bridgeway Capital Management, LLC | 0.07% | Reduce -8.8% | 159,350 | $3.5M |
"% of holder's portfolio" is MGY's weight in each manager's 13F, not the share of Magnolia Oil & Gas Corp. Class A the manager owns.