Magnolia Oil & Gas Corp. Class AMGY
13F holders, Q2 2026 (June 30)411holders +5
54new positions
47sold out
7famous investors
$25.70avg. 13F price*
At the end of Q2 2026, 411 institutions reported holding Magnolia Oil & Gas Corp. Class A (MGY) in their 13F filings, up 5 from Q1 2026. 54 opened new positions and 47 sold out. The largest holders were BlackRock, Inc. ($817.8M), Vanguard Portfolio Management LLC ($392.4M) and American Century Companies Inc. ($281.7M). 7 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Steve Cohen (0.0% of Point72 Asset Management's portfolio) and Cliff Asness (0.0% of AQR Capital 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 Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 54 | $86.1M |
| Exits | 47 | $55.8M |
All 13F filers, Q1 2026 → Q2 2026: 17,236,688 shares bought and 15,217,432 shares sold, net +2,019,256 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 411 holders
| BlackRock, Inc. | 0.01% | Add +8.4% | 31,972,219 | $817.8M |
| Vanguard Portfolio Management LLC | 0.02% | Add +18.2% | 15,341,201 | $392.4M |
| American Century Companies Inc. | 0.12% | Add +4.8% | 11,011,458 | $281.7M |
| State Street Corp. | 0.01% | Add +4.7% | 9,941,466 | $254.3M |
| Vanguard Capital Management LLC | 0.00% | Add +6.6% | 7,663,263 | $196.0M |
| Dimensional Fund Advisors LP | 0.03% | Add +1.3% | 7,117,449 | $182.1M |
| Jupiter Topco LLC | 0.07% | — | 6,427,893 | $164.4M |
| Arrowstreet Capital, Limited Partnership | 0.06% | Reduce -12.8% | 5,463,526 | $139.8M |
| T. Rowe Price Investment Management, Inc. | 0.09% | Reduce -0.3% | 5,180,518 | $132.5M |
| Alliancebernstein L.P. | 0.04% | Reduce -7.4% | 4,122,434 | $130.1M |
| Geode Capital Management, LLC | 0.01% | Add +5.8% | 4,802,973 | $122.9M |
| Nomura Asset Management International Inc. | 0.17% | Reduce -13.3% | 4,311,973 | $110.3M |
| Bank of America Corp. | 0.01% | Add +9.7% | 4,253,346 | $108.8M |
| TD Asset Management Inc | 0.09% | Reduce -20.4% | 3,934,160 | $100.6M |
| Epoch Investment Partners, Inc. | 0.52% | Reduce -16.5% | 3,569,975 | $91.3M |
| Morgan Stanley | 0.00% | Add +13.3% | 3,429,471 | $87.7M |
| Victory Capital Management Inc. | 0.04% | Reduce -3.5% | 2,982,883 | $76.3M |
| GW&K Investment Management, LLC | 0.58% | Reduce -5.3% | 2,917,419 | $74.6M |
| Systematic Financial Management LP | 1.42% | Reduce -1.3% | 2,777,352 | $71.0M |
| Westwood Holdings Group Inc. | 0.51% | Add +66.1% | 2,642,440 | $67.6M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +0.2% | 2,618,204 | $67.0M |
| Allspring Global Investments Holdings, LLC | 0.10% | Reduce -1.2% | 2,667,136 | $66.6M |
| Silvercrest Asset Management Group LLC | 0.43% | Reduce -4.8% | 2,537,333 | $64.9M |
| Goldman Sachs Group Inc. | 0.01% | Reduce -23.2% | 2,406,168 | $61.5M |
| Boston Trust Walden Corp | 0.46% | Reduce -26.1% | 2,384,760 | $61.0M |
| Nuveen, LLC | 0.01% | Reduce -1.1% | 2,228,804 | $57.0M |
| Stephens Investment Management Group LLC | 0.61% | Add +2.2% | 2,219,966 | $56.8M |
| Loomis Sayles & Co. L P | 0.07% | Reduce -5.3% | 2,065,051 | $52.8M |
| Bank of New York Mellon Corp | 0.01% | Add +0.0% | 1,944,363 | $49.7M |
| Northern Trust Corp. | 0.01% | Reduce -11.1% | 1,894,970 | $48.5M |
| Manufacturers Life Insurance Company, The | 0.04% | Add +21.0% | 1,857,192 | $47.5M |
| T. Rowe Price Associates Inc. | 0.00% | Add +601.2% | 1,713,122 | $43.8M |
| UBS Group AG | 0.01% | Add +28.5% | 1,503,941 | $38.5M |
| Two Sigma Investments, LP | 0.03% | Reduce -16.4% | 1,416,670 | $36.2M |
| Bessemer Group Inc. | 0.05% | Add +6.3% | 1,334,098 | $34.1M |
| Vanguard Fiduciary Trust Co. | 0.01% | Add +12.6% | 1,330,499 | $34.0M |
| Renaissance Technologies | 0.05% | Reduce -23.8% | 1,296,902 | $33.2M |
| Principal Financial Group Inc. | 0.01% | Reduce -27.4% | 1,120,762 | $28.7M |
| Aberdeen Group plc | 0.03% | Add +24.9% | 958,945 | $24.5M |
| JPMorgan Chase & Co. | 0.00% | Reduce -22.8% | 926,677 | $24.1M |
| Conestoga Capital Advisors, LLC | 0.52% | New | 935,605 | $23.9M |
| Fort Washington Investment Advisors Inc. | 0.11% | New | 870,898 | $22.3M |
| First Trust Advisors LP | 0.01% | Reduce -14.9% | 830,702 | $21.2M |
| Public Sector Pension Investment Board | 0.05% | Reduce -1.0% | 793,479 | $20.3M |
| HRT Financial LP | 0.04% | Add +188.1% | 787,701 | $20.1M |
| Invesco Ltd. | 0.00% | Add +5.4% | 742,620 | $19.0M |
| Creative Planning | 0.01% | Add +47.1% | 633,423 | $16.2M |
| Heartland Advisors Inc. | 0.70% | Reduce -2.4% | 615,475 | $15.7M |
| AQR Capital Management | 0.01% | Add +19.4% | 594,648 | $15.2M |
| Algert Global LLC | 0.17% | Add +5.4% | 551,900 | $14.1M |
| Rhumbline Advisers | 0.01% | Reduce -9.1% | 524,565 | $13.4M |
| Barrow Hanley Mewhinney & Strauss LLC | 0.04% | Add +35.1% | 515,963 | $13.2M |
| Gilder Gagnon Howe & Co. LLC | 0.13% | Reduce -1.3% | 480,127 | $12.3M |
| Edgestream Partners, L.P. | 0.36% | Add +35.6% | 478,721 | $12.2M |
| Diamond Hill Capital Management, LLC (Investment Advisor) | 0.10% | Add +44.2% | 468,704 | $12.0M |
| California Public Employees Retirement System | 0.01% | Add +10.3% | 456,471 | $11.7M |
| Oberweis Asset Management Inc./ | 0.24% | Add +0.4% | 456,466 | $11.7M |
| Envestnet Asset Management Inc. | 0.00% | Add +3.0% | 434,943 | $11.1M |
| Squarepoint Ops LLC | 0.02% | Reduce -5.4% | 430,380 | $11.0M |
| Trexquant Investment LP | 0.07% | Add +63.4% | 422,732 | $10.8M |
| Legal & General Group Plc | 0.00% | Add +1.0% | 389,923 | $10.0M |
| Point72 Asset Management | 0.02% | Reduce -44.3% | 385,561 | $9.9M |
| Nordea Investment Management AB | 0.01% | Add +1.2% | 367,290 | $9.5M |
| Swiss National Bank | 0.00% | Add +4.3% | 363,300 | $9.3M |
| State of Wisconsin Investment Board | 0.02% | Reduce -6.9% | 359,835 | $9.2M |
| Ameriprise Financial Inc. | 0.00% | Add +17.1% | 353,570 | $9.0M |
| Marshall Wace, LLP | 0.01% | New | 328,279 | $8.4M |
| Clark Capital Management Group, Inc. | 0.04% | Add +50.0% | 320,995 | $8.2M |
| Deutsche Bank AG | 0.00% | Add +41.3% | 311,090 | $8.0M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.01% | Add +3.9% | 286,035 | $7.3M |
| Raymond James Financial Inc. | 0.00% | Reduce -0.9% | 281,030 | $7.2M |
| Foster Victor Wealth Advisors, LLC | 0.37% | Reduce -37.5% | 265,272 | $7.1M |
| Sei Investments Co. | 0.01% | Reduce -39.9% | 273,602 | $7.0M |
| Millennium Management | 0.00% | Reduce -56.4% | 261,428 | $6.7M |
| King Luther Capital Management Corp. | 0.03% | Add +11.5% | 259,018 | $6.6M |
| Russell Investments Group, Ltd. | 0.01% | Add +6.9% | 234,139 | $6.0M |
| SIR Capital Management, L.P. | 0.67% | Reduce -73.3% | 227,667 | $5.8M |
| Federated Hermes, Inc. | 0.01% | Add +1327.2% | 216,186 | $5.5M |
| California State Teachers Retirement System | 0.01% | Add +0.8% | 213,180 | $5.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +0.8% | 208,440 | $5.3M |
| Wells Fargo & Company | 0.00% | Add +17.2% | 196,729 | $5.0M |
| Prudential Financial Inc. | 0.01% | Reduce -18.3% | 191,670 | $4.9M |
| Franklin Resources Inc. | 0.00% | Reduce -16.1% | 189,120 | $4.8M |
| Phocas Financial Corp. | 0.67% | Reduce -5.8% | 187,730 | $4.8M |
| Aventail Capital Group, LP | 0.28% | New | 187,617 | $4.8M |
| Great Lakes Advisors, LLC | 0.04% | Reduce -2.0% | 182,784 | $4.7M |
| Susquehanna International Group, LLP | 0.00% | Reduce -7.4% | 177,870 | $4.5M |
| Emerald Investment Advisers, LLC | 0.30% | Reduce -13.3% | 176,541 | $4.5M |
| Fred Alger Management, LLC | 0.01% | Reduce -85.7% | 171,139 | $4.4M |
| Barclays PLC | 0.00% | Reduce -9.1% | 169,430 | $4.3M |
| Moody Aldrich Partners LLC | 0.77% | Reduce -13.3% | 167,040 | $4.3M |
| Fifth Third Bancorp | 0.01% | Add +127.6% | 165,467 | $4.2M |
| Lazard Asset Management LLC | 0.01% | New | 163,263 | $4.2M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | Add +7.8% | 155,158 | $4.0M |
| Voloridge Investment Management, LLC | 0.02% | Reduce -84.2% | 155,059 | $4.0M |
| Empowered Funds, LLC | 0.02% | Add +93.0% | 151,858 | $3.9M |
| Van Eck Associates Corp. | 0.00% | New | 149,697 | $3.8M |
| CANADA LIFE ASSURANCE Co | 0.01% | Reduce -1.4% | 147,914 | $3.8M |
| Cerity Partners LLC | 0.00% | Add +2.3% | 142,648 | $3.6M |
| Rafferty Asset Management, LLC | 0.01% | Reduce -40.9% | 141,860 | $3.6M |
"% 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.