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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, Q4 2025

Institutional positions in Magnolia Oil & Gas Corp as of Dec 31, 2025. 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
379
+13 vs. Q3 2025
Shares held
199.5M
−4.55M (−2.2%) vs. Q3 2025
Total value
$4.37B
−$501.6M (−10.3%) vs. Q3 2025
New holders
61
124 more added
Sold out
48
152 more reduced

7 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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.

Institutional holdersQ4 2025: 379 institutions
Q1 2021: 190 institutionsQ2 2021: 206 institutionsQ3 2021: 240 institutionsQ4 2021: 234 institutionsQ1 2022: 251 institutionsQ2 2022: 283 institutionsQ3 2022: 280 institutionsQ4 2022: 295 institutionsQ1 2023: 276 institutionsQ2 2023: 281 institutionsQ3 2023: 288 institutionsQ4 2023: 297 institutionsQ1 2024: 323 institutionsQ2 2024: 347 institutionsQ3 2024: 367 institutionsQ4 2024: 383 institutionsQ1 2025: 407 institutionsQ2 2025: 385 institutionsQ3 2025: 373 institutionsQ4 2025: 379 institutionsQ1 2026: 406 institutionsQ2 2026: 411 institutions
Value heldQ4 2025: $4.37B
Q1 2021: $2.07BQ2 2021: $2.83BQ3 2021: $3.23BQ4 2021: $3.55BQ1 2022: $4.47BQ2 2022: $4.14BQ3 2022: $3.83BQ4 2022: $4.56BQ1 2023: $4.37BQ2 2023: $4.14BQ3 2023: $4.41BQ4 2023: $4.19BQ1 2024: $5.78BQ2 2024: $5.60BQ3 2024: $5.44BQ4 2024: $5.15BQ1 2025: $5.51BQ2 2025: $4.85BQ3 2025: $4.92BQ4 2025: $4.37BQ1 2026: $6.39BQ2 2026: $5.28B
Institutions holding MGY and their total value by quarter
QuarterHoldersValue
Q2 2026411$5.28B
Q1 2026406$6.39B
Q4 2025379$4.37B
Q3 2025373$4.92B
Q2 2025385$4.85B
Q1 2025407$5.51B
Q4 2024383$5.15B
Q3 2024367$5.44B
Q2 2024347$5.60B
Q1 2024323$5.78B
Q4 2023297$4.19B
Q3 2023288$4.41B
Q2 2023281$4.14B
Q1 2023276$4.37B
Q4 2022295$4.56B
Q3 2022280$3.83B
Q2 2022283$4.14B
Q1 2022251$4.47B
Q4 2021234$3.55B
Q3 2021240$3.23B
Q2 2021206$2.83B
Q1 2021190$2.07B

Institutions, Q4 2025

Shares, value and share of portfolio for each institution holding Magnolia Oil & Gas Corp; share changes are against Q3 2025.

Institutions holding MGY in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Allworth Financial LP4,623$101.2K0.00%−75−1.6%Reduced
Smartleaf Asset Management LLC4,624$102.1K0.00%+422+10.0%Added
KBC Group NV5,105$112.0K0.00%00.0%Unchanged
Farther Finance Advisors, LLC5,163$113.0K0.00%+879+20.5%Added
Quarry LP5,475$119.8K0.02%+5,332+3,728.7%Added
SBI Okasan Asset Management Co.Ltd.5,600$122.9K0.01%+5,600New
GAMMA Investing LLC6,130$134.2K0.01%+453+8.0%Added
CIBC Private Wealth Group, LLC6,218$136.1K0.00%+44+0.7%Added
Tower Research Capital LLC (TRC)7,256$158.8K0.00%+689+10.5%Added
Virtus Investment Advisers, Inc.7,459$163.3K0.04%+7,459New
Rockefeller Capital Management L.P.7,869$172.3K0.00%+1,449+22.6%Added
IFP Advisors, Inc8,185$179.2K0.00%+254+3.2%Added
State of Wyoming8,689$190.2K0.02%+8,689New
Coldstream Capital Management Inc9,179$200.9K0.00%−6,758−42.4%Reduced
BTG Pactual Asset Management US LLC9,427$206.4K0.02%+9,427New
JustInvest LLC9,463$207.1K0.00%−743−7.3%Reduced
Isthmus Partners, LLC9,617$210.5K0.02%+79+0.8%Added
Canandaigua National Bank & Trust Co9,988$218.6K0.02%−548−5.2%Reduced
Marathon Capital Management10,000$218.9K0.05%00.0%Unchanged
Public Employees Retirement Association of Colorado10,106$221.0K0.00%00.0%Unchanged
Fieldview Capital Management, LLC10,213$223.6K0.04%+10,213New
Vise Technologies, Inc.10,452$228.8K0.00%+10,452New
HB Wealth Management, LLC10,789$236.2K0.00%+1,277+13.4%Added
Greenleaf Trust10,863$237.8K0.00%+10,863New
Callan Family Office, LLC11,144$243.9K0.01%+11,144New
Loring Wolcott & Coolidge Fiduciary Advisors LLP10,000$247.0K0.00%00.0%Unchanged
DRW Securities, LLC11,416$249.9K0.02%+11,416New
Fulton Bank, N.A.11,483$251.4K0.01%+321+2.9%Added
Oxford Asset Management LLP11,588$253.7K0.09%+11,588New
Sequoia Financial Advisors, LLC11,692$255.9K0.00%−8,307−41.5%Reduced
Peirce Capital Management, LLC11,731$256.8K0.10%00.0%Unchanged
Mackenzie Financial Corp11,665$256.9K0.00%−17,171−59.5%Reduced
Sanctuary Advisors, LLC11,876$260.0K0.00%−6,638−35.9%Reduced
Mercer Global Advisors Inc11,886$260.2K0.00%+11,886New
Ritholtz Wealth Management11,956$261.7K0.00%−5,566−31.8%Reduced
CIBC World Markets Corp11,981$262.3K0.00%+11,981New
MML Investors Services, LLC12,186$266.7K0.00%+1,680+16.0%Added
Stock Yards Bank & Trust Co12,568$275.1K0.01%−32−0.3%Reduced
Park Avenue Securities LLC12,712$278.0K0.00%−402−3.1%Reduced
PharVision Advisers, LLC12,753$279.2K0.14%+12,753New
Advisors Asset Management, Inc.13,069$286.1K0.00%−1,804−12.1%Reduced
CWM, LLC13,110$287.0K0.00%−1,080−7.6%Reduced
Wiley Bros.-Aintree Capital, LLC14,186$297.0K0.00%−1,981−12.3%Reduced
Resonant Capital Advisors, LLC13,657$299.0K0.02%+13,657New
Hantz Financial Services, Inc.13,849$303.0K0.00%+6,281+83.0%Added
Vestcor Inc13,974$306.0K0.01%−27,302−66.1%Reduced
Xponance, Inc.14,095$308.5K0.00%−438−3.0%Reduced
Ameritas Investment Partners, Inc.14,700$321.8K0.01%−873−5.6%Reduced
Buckingham Strategic Partners14,852$325.1K0.00%+14,852New
Ensign Peak Advisors, Inc14,859$325.3K0.00%−28,700−65.9%Reduced
Caitlin John, LLC15,041$329.2K0.22%+15,041New
Bokf, NA15,054$329.5K0.01%−253−1.7%Reduced
Tyche Wealth Partners LLC15,445$338.1K0.05%00.0%Unchanged
Resources Investment Advisors, LLC.15,982$349.8K0.00%−844−5.0%Reduced
Jackson Creek Investment Advisors LLC16,472$361.0K0.11%−236−1.4%Reduced
Cetera Investment Advisers16,682$365.2K0.00%+621+3.9%Added
Nomura Holdings Inc16,708$365.7K0.00%−2,901−14.8%Reduced
Commerce Bank17,417$381.3K0.00%+135+0.8%Added
Lido Advisors, LLC16,197$381.5K0.00%+387+2.4%Added
CIBC Asset Management Inc17,823$390.1K0.00%+7,885+79.3%Added
Verition Fund Management LLC18,368$402.1K0.00%−145,117−88.8%Reduced
Regions Financial Corp18,882$413.3K0.00%+871+4.8%Added
Keybank National Association19,115$418.4K0.00%−359−1.8%Reduced
M&T Bank Corp20,749$454.1K0.00%−4,474−17.7%Reduced
Mutual of America Capital Management LLC20,933$458.2K0.00%+177+0.9%Added
BNP Paribas Arbitrage, SA20,959$458.8K0.00%−22,804−52.1%Reduced
Neuberger Berman Group LLC20,970$459.0K0.00%+219+1.1%Added
Aviva PLC21,447$469.5K0.00%+1,981+10.2%Added
FMR LLC21,459$469.7K0.00%−1,892−8.1%Reduced
Skopos Labs, Inc.21,500$471.9K0.02%+21,500New
Aquatic Capital Management LLC21,647$473.9K0.01%−46,660−68.3%Reduced
Profund Advisors LLC22,360$489.5K0.01%+13,902+164.4%Added
Evolve Private Wealth, LLC22,713$497.2K0.03%+22,713New
Jennison Associates LLC22,806$499.2K0.00%−1,069−4.5%Reduced
EntryPoint Capital, LLC23,498$514.4K0.20%00.0%Unchanged
James Investment Research Inc23,659$517.9K0.06%+13+0.1%Added
Royce & Associates LP24,090$527.3K0.01%+24,090New
Commonwealth Equity Services, LLC24,106$527.7K0.00%−4,236−14.9%Reduced
Atria Investments LLC24,516$536.7K0.01%−381−1.5%Reduced
Fiduciary Trust Co25,442$556.9K0.01%+1,116+4.6%Added
Y-Intercept (Hong Kong) Ltd26,368$577.2K0.01%+26,368New
Maryland State Retirement & Pension System26,868$588.1K0.01%+230+0.9%Added
Gallacher Capital Management LLC27,700$606.4K0.23%−4,465−13.9%Reduced
New Age Alpha Advisors, LLC28,072$614.5K0.03%+22,631+415.9%Added
CWA Asset Management Group, LLC28,867$631.9K0.02%+28,867New
Pictet Asset Management Holding SA28,981$634.4K0.00%+2,194+8.2%Added
Penserra Capital Management LLC29,631$648.0K0.01%+7,612+34.6%Added
Quantinno Capital Management LP29,697$650.1K0.00%+3,508+13.4%Added
Bank of Montreal29,871$653.9K0.00%−432−1.4%Reduced
Susquehanna International Group, LLP29,915$654.8K0.00%−13,966−31.8%Reduced
Laurion Capital Management LP30,845$675.2K0.05%+30,845New
Unison Advisors LLC31,215$683.3K0.06%+31,215New
O'Shaughnessy Asset Management, LLC31,518$689.9K0.00%−13,200−29.5%Reduced
Voya Investment Management LLC32,357$708.3K0.00%−798−2.4%Reduced
Brevan Howard Capital Management LP32,527$712.0K0.01%−8,306−20.3%Reduced
CI Private Wealth, LLC32,628$714.2K0.00%+311+1.0%Added
Glenmede Trust Co NA33,212$727.0K0.00%+33,212New
Mariner, LLC33,378$731.3K0.00%−4,390−11.6%Reduced
Fox Run Management, L.L.C.33,844$740.8K0.11%+25,195+291.3%Added
Truist Financial Corp34,153$747.6K0.00%−68,768−66.8%Reduced