Latest Period
Q2 2026
Security Snapshot
Magnolia Oil & Gas Corp - Common Stock (MGY) Institutional Ownership
CUSIP: 559663109
13F Institutional Holders and Ownership History from Q2 2018 to Q2 2026
Institutions Reporting
404
Shares (Excl. Options)
205,266,861
Price
$25.58
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- Security type / class
- Equity / Common Stock
- Symbol
- MGY on NYSE
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 205,266,861
- Total 13F value
- $5,274,765,933
- Portfolio coverage rank
- 0%
- Share change
- +2,186,526
- Value change
- +$43,675,277
- Number of holders
- 404
- Shares outstanding
- 184,949,154
- SEC-reported price per share
- $26.70
- Insider filing price
- $26.70
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- MGY - Magnolia Oil & Gas Corp - Common Stock is tracked under CUSIP 559663109.
- 404 institutions reported positions in Q2 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 405 to 404 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $6,385,789,951 to $5,274,765,933.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 404 institutions filings for Q2 2026.
Security key
559663109
Latest holder period
Q2 2026
13F holders
404
13D/G owners
4
CIK / CUSIP context first
Open Q2 2026 holders
MGY full holder history
Magnolia Oil & Gas Corp SEC filings
Magnolia Oil & Gas Corp company facts
Magnolia Oil & Gas Corp insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 559663109:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
MGY
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 14% | $589,581,498 | 27,207,268 | BlackRock, Inc. | 31 Mar 2025 | |||
| VANGUARD PORTFOLIO MANAGEMENT LLC | 8.4% | +19% | $414,310,148 | +$65,324,914 | 15,517,234 | +19% | Vanguard Portfolio Management | 30 Jun 2026 |
| STATE STREET CORP | 5.1% | +8% | $281,944,405 | +$24,380,686 | 9,496,275 | +9.5% | STATE STREET CORPORATION | 31 Mar 2026 |
| FIRST TRUST PORTFOLIOS LP | 1.8% | -82% | $73,923,001 | -$335,308,470 | 3,411,306 | -82% | First Trust Portfolios L.P. | 31 Mar 2025 |
As of 30 Jun 2026, 404 institutional investors reported holding 205,266,861 shares of Magnolia Oil & Gas Corp - Common Stock (MGY). This represents 111% of the company’s total 184,949,154 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
82%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 17% | 31,972,219 | +8.4% | 0.01% | $817,849,380 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 8.3% | 15,341,201 | +18% | 0.02% | $392,427,922 |
| AMERICAN CENTURY COMPANIES INC | 6% | 11,011,458 | +4.8% | 0.12% | $281,673,112 |
| STATE STREET CORP | 5.4% | 9,941,466 | +4.7% | 0.01% | $254,302,700 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.1% | 7,663,263 | +6.6% | 0% | $196,026,268 |
| DIMENSIONAL FUND ADVISORS LP | 3.8% | 7,117,449 | +1.3% | 0.03% | $182,067,476 |
| Jupiter Topco LLC | 3.5% | 6,427,893 | 0% | 0.07% | $164,426,683 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 3% | 5,463,526 | -13% | 0.06% | $139,756,995 |
| T. Rowe Price Investment Management, Inc. | 2.8% | 5,180,518 | -0.26% | 0.09% | $132,518,000 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.6% | 4,802,973 | +5.8% | 0.01% | $122,888,774 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 2.3% | 4,311,973 | -13% | 0.17% | $110,300,000 |
| BANK OF AMERICA CORP /DE/ | 2.3% | 4,253,346 | +9.7% | 0.01% | $108,800,587 |
| ALLIANCEBERNSTEIN L.P. | 2.2% | 4,122,434 | -7.4% | 0.05% | $130,145,241 |
| TD Asset Management Inc | 2.1% | 3,934,160 | -20% | 0.09% | $100,635,813 |
| Epoch Investment Partners, Inc. | 1.9% | 3,569,975 | -17% | 0.52% | $91,319,961 |
| MORGAN STANLEY | 1.9% | 3,429,471 | +13% | 0% | $87,725,923 |
| VICTORY CAPITAL MANAGEMENT INC | 1.6% | 2,982,883 | -3.5% | 0.04% | $76,302,147 |
| GW&K Investment Management, LLC | 1.6% | 2,917,419 | -5.3% | 0.58% | $74,627,000 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP | 1.5% | 2,777,352 | -1.3% | 1.4% | $71,044,695 |
| Allspring Global Investments Holdings, LLC | 1.4% | 2,667,136 | -1.2% | 0.1% | $66,625,062 |
| WESTWOOD HOLDINGS GROUP INC | 1.4% | 2,642,440 | +66% | 0.51% | $67,593,615 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.4% | 2,618,204 | +0.18% | 0.01% | $66,973,658 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | 1.4% | 2,537,333 | -4.8% | 0.43% | $64,905,029 |
| GOLDMAN SACHS GROUP INC | 1.3% | 2,406,168 | -23% | 0.01% | $61,549,772 |
| Boston Trust Walden Corp | 1.3% | 2,384,760 | -26% | 0.46% | $61,002,161 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
33
Latest
Q2 2026
Rows shown
1-25 of 33
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 205,266,861 | $5,274,765,933 | +$43,675,277 | $25.58 | 404 |
| 2026 Q1 | 203,791,520 | $6,385,789,951 | +$182,953,906 | $31.57 | 405 |
| 2025 Q4 | 199,459,155 | $4,368,411,012 | -$227,369,483 | $21.89 | 378 |
| 2025 Q3 | 206,135,836 | $4,920,930,206 | -$224,803,628 | $23.87 | 370 |
| 2025 Q2 | 215,861,849 | $4,854,938,422 | -$54,932,193 | $22.48 | 383 |
| 2025 Q1 | 218,110,272 | $5,507,771,915 | -$46,450,645 | $25.26 | 405 |
| 2024 Q4 | 220,096,327 | $5,148,510,013 | -$75,415,520 | $23.38 | 381 |
| 2024 Q3 | 222,505,962 | $5,435,336,507 | +$37,225,141 | $24.42 | 365 |
| 2024 Q2 | 220,880,533 | $5,597,593,861 | -$28,819,580 | $25.34 | 344 |
| 2024 Q1 | 222,730,960 | $5,778,914,554 | +$698,644,961 | $25.95 | 322 |
| 2023 Q4 | 196,802,406 | $4,191,458,298 | +$90,269,529 | $21.29 | 294 |
| 2023 Q3 | 192,221,395 | $4,405,495,370 | -$137,915,292 | $22.91 | 287 |
| 2023 Q2 | 198,150,169 | $4,141,407,611 | -$32,609,394 | $20.90 | 278 |
| 2023 Q1 | 199,712,268 | $4,369,557,710 | +$118,575,344 | $21.88 | 272 |
| 2022 Q4 | 194,730,823 | $4,566,050,509 | +$54,079,784 | $23.45 | 291 |
| 2022 Q3 | 193,273,415 | $3,828,674,932 | -$398,040,849 | $19.81 | 273 |
| 2022 Q2 | 197,339,370 | $4,143,564,800 | +$199,308,095 | $20.99 | 273 |
| 2022 Q1 | 189,020,463 | $4,472,219,389 | +$35,077,659 | $23.65 | 243 |
| 2021 Q4 | 187,930,864 | $3,546,224,428 | +$32,547,837 | $18.87 | 227 |
| 2021 Q3 | 181,395,785 | $3,227,396,703 | +$18,816,498 | $17.79 | 235 |
| 2021 Q2 | 180,478,579 | $2,819,994,590 | +$30,552,184 | $15.63 | 203 |
| 2021 Q1 | 180,082,550 | $2,067,269,372 | +$77,051,237 | $11.48 | 187 |
| 2020 Q4 | 177,129,033 | $1,250,600,458 | +$12,882,730 | $7.06 | 169 |
| 2020 Q3 | 175,169,573 | $905,937,397 | +$4,387,772 | $5.17 | 170 |
| 2020 Q2 | 173,885,044 | $1,054,009,520 | -$1,632,850 | $6.06 | 170 |