MGY Magnolia Oil & Gas Corporation
Magnolia Oil & Gas Corporation (MGY) Institutional Ownership
What the institutions did with MGY last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 32.0M | 15.2% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 15.3M | 7.3% |
| AMERICAN CENTURY COMPANIES INC | 11.0M | 5.2% |
| STATE STREET CORP | 9.9M | 4.7% |
| VANGUARD CAPITAL MANAGEMENT LLC | 7.7M | 3.6% |
| DIMENSIONAL FUND ADVISORS LP | 7.1M | 3.4% |
| Jupiter Topco LLC | 6.4M | 3.1% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 5.5M | 2.6% |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | 5.5M | 2.6% |
| T. Rowe Price Investment Management, Inc. | 5.2M | 2.5% |
| GEODE CAPITAL MANAGEMENT, LLC | 4.8M | 2.3% |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 4.3M | 2.0% |
| BANK OF AMERICA CORP /DE/ | 4.3M | 2.0% |
| ALLIANCEBERNSTEIN L.P. | 4.1M | 2.0% |
| TD Asset Management Inc | 3.9M | 1.9% |
| Epoch Investment Partners, Inc. | 3.6M | 1.7% |
| MORGAN STANLEY | 3.4M | 1.6% |
| VICTORY CAPITAL MANAGEMENT INC | 3.0M | 1.4% |
| GW&K Investment Management, LLC | 2.9M | 1.4% |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | 2.8M | 1.3% |
| Allspring Global Investments Holdings, LLC | 2.7M | 1.3% |
| WESTWOOD HOLDINGS GROUP INC | 2.6M | 1.3% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.6M | 1.2% |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | 2.5M | 1.2% |
| GOLDMAN SACHS GROUP INC | 2.4M | 1.1% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | Increased | 211.5K | 5.5M | +5.2M |
| BlackRock, Inc. | Increased | 29.5M | 32.0M | +2.5M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 13.0M | 15.3M | +2.4M |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 244.3K | 1.7M | +1.5M |
| WESTWOOD HOLDINGS GROUP INC | Increased | 1.6M | 2.6M | +1.1M |
| FRED ALGER MANAGEMENT, LLC | Reduced | 1.2M | 171.1K | -1.0M |
| TD Asset Management Inc | Reduced | 4.9M | 3.9M | -1.0M |
| Conestoga Capital Advisors, LLC | New | 0 | 935.6K | +935.6K |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ | New | 0 | 870.9K | +870.9K |
| Boston Trust Walden Corp | Reduced | 3.2M | 2.4M | -843.1K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Reduced | 983.9K | 155.1K | -828.8K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | 6.3M | 5.5M | -800.3K |
| GOLDMAN SACHS GROUP INC | Reduced | 3.1M | 2.4M | -725.2K |
| Epoch Investment Partners, Inc. | Reduced | 4.3M | 3.6M | -705.5K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | Reduced | 5.0M | 4.3M | -660.3K |
| SIR Capital Management, L.P. | Reduced | 851.1K | 227.7K | -623.4K |
| HRT FINANCIAL LP | Increased | 273.4K | 787.7K | +514.3K |
| AMERICAN CENTURY COMPANIES INC | Increased | 10.5M | 11.0M | +502.2K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 7.2M | 7.7M | +474.8K |
| STATE STREET CORP | Increased | 9.5M | 9.9M | +445.2K |
| PRINCIPAL FINANCIAL GROUP INC | Reduced | 1.5M | 1.1M | -423.5K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 1.7M | 1.3M | -404.9K |
| MORGAN STANLEY | Increased | 3.0M | 3.4M | +401.5K |
| NEUBERGER BERMAN GROUP LLC | Reduced | 418.2K | 25.6K | -392.6K |
| BANK OF AMERICA CORP /DE/ | Increased | 3.9M | 4.3M | +376.0K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.