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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
Salomon & Ludwin, LLC1,344$29.3K0.00%+760+130.1%Added
Harbor Capital Advisors, Inc.1,253$27.0K0.00%−21−1.6%Reduced
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.1,190$26.8K0.00%00.0%Unchanged
Umb Bank N A1,065$23.3K0.00%+488+84.6%Added
Jones Financial Companies LLLP1,041$22.8K0.00%+754+262.7%Added
Maseco LLP1,004$22.0K0.00%+1,004New
ORG Partners LLC1,000$21.9K0.00%+1,000New
Wellington-Altus USA Inc.998$21.8K0.02%+998New
Huntington National Bank974$21.3K0.00%−17−1.7%Reduced
Financial Management Professionals, Inc.972$21.3K0.00%00.0%Unchanged
Nomura Asset Management Co Ltd950$20.8K0.00%00.0%Unchanged
Los Angeles Capital Management LLC901$20.2K0.00%+901New
Fifth Third Bancorp863$18.9K0.00%+20+2.4%Added
Y.D. More Investments Ltd750$16.6K0.00%00.0%Unchanged
Ronald Blue Trust, Inc.718$15.7K0.00%−260−26.6%Reduced
Brown Brothers Harriman & Co716$15.7K0.00%+716New
Basecamp Wealth Advisors LLC644$14.1K0.00%+644New
TD Private Client Wealth LLC600$13.1K0.00%+69+13.0%Added
DV Trading LLC600$13.1K0.00%+600New
Center for Financial Planning, Inc.566$12.4K0.00%00.0%Unchanged
Key Financial Inc560$12.3K0.00%00.0%Unchanged
Root Financial Partners, LLC512$11.2K0.00%+33+6.9%Added
Wall Street Access Asset Management, LLC507$11.1K0.00%+134+35.9%Added
Your Advocates Ltd., LLP500$10.9K0.00%+500New
GWM Advisors LLC489$10.7K0.00%+205+72.2%Added
Kemnay Advisory Services Inc.445$9.74K0.00%+445New
Bayforest Capital Ltd408$8.93K0.01%−420−50.7%Reduced
Accent Capital Management, LLC393$8.60K0.00%00.0%Unchanged
Ares Financial Consulting, LLC390$8.54K0.01%+390New
Trust Co of Vermont382$8.36K0.00%00.0%Unchanged
Massmutual Trust Co FSB379$8.30K0.00%−5−1.3%Reduced
Bogart Wealth, LLC364$7.97K0.00%−14−3.7%Reduced
Northwestern Mutual Wealth Management Co355$7.77K0.00%−2−0.6%Reduced
Bryn Mawr Trust Co350$7.66K0.00%00.0%Unchanged
Private Wealth Management Group, LLC341$7.46K0.00%00.0%Unchanged
Park Place Capital Corp339$7.42K0.00%00.0%Unchanged
Global Retirement Partners, LLC328$7.18K0.00%+328New
Truvestments Capital LLC327$7.16K0.00%00.0%Unchanged
SJS Investment Consulting Inc.319$6.98K0.00%+295+1,229.2%Added
Essential Partners LLC317$6.94K0.00%+102+47.4%Added
Optiver Holding B.V.279$6.11K0.00%−426−60.4%Reduced
Bare Financial Services, Inc277$6.06K0.00%00.0%Unchanged
Whittier Trust Co of Nevada Inc259$5.57K0.00%−2−0.8%Reduced
LRI Investments, LLC250$5.47K0.00%00.0%Unchanged
MAI Capital Management242$5.30K0.00%+58+31.5%Added
Basepoint Wealth LLC214$4.70K0.00%+214New
Parkside Financial Bank & Trust176$3.85K0.00%−620−77.9%Reduced
Rothschild Investment LLC155$3.39K0.00%−50−24.4%Reduced
JFS Wealth Advisors, LLC135$2.96K0.00%+83+159.6%Added
Keating Financial Advisory Services, Inc.132$2.89K0.00%+132New
SRS Capital Advisors, Inc.128$2.80K0.00%−876−87.3%Reduced
Sunrise Financial Services, LLC123$2.69K0.00%+123New
Farmers & Merchants Investments Inc100$2.19K0.00%00.0%Unchanged
SageView Advisory Group, LLC85$1.86K0.00%+85New
Annis Gardner Whiting Capital Advisors, LLC80$1.75K0.00%00.0%Unchanged
Fortitude Family Office, LLC76$1.66K0.00%+11+16.9%Added
SBI Securities Co., Ltd.75$1.64K0.00%+7+10.3%Added
Westfuller Advisors, LLC72$1.57K0.00%+1+1.4%Added
Steward Partners Investment Advisory, LLC71$1.55K0.00%00.0%Unchanged
Central Trust Co53$1.16K0.00%00.0%Unchanged
Cornerstone Planning Group LLC45$1.13K0.00%00.0%Unchanged
Larson Financial Group LLC48$1.05K0.00%−15−23.8%Reduced
Picton Mahoney Asset Management48$1.05K0.00%00.0%Unchanged
Legacy Wealth Managment, LLC47$1.03K0.00%00.0%Unchanged
Ankerstar Wealth, LLC46$1.01K0.00%+46New
Glen Eagle Advisors, LLC42$9120.00%+1+2.4%Added
Kilter Group LLC32$7010.00%+32New
WPG Advisers, LLC31$6790.00%00.0%Unchanged
DiNuzzo Private Wealth, Inc.26$5700.00%+3+13.0%Added
Clearstead Advisors, LLC22$4820.00%−280−92.7%Reduced
Rialto Wealth Management, LLC19$4160.00%+2+11.8%Added
Gilpin Wealth Management, LLC19$4160.00%+19New
Prestige Wealth Management Group LLC18$3950.00%00.0%Unchanged
Bay Harbor Wealth Management, LLC15$3280.00%+4+36.4%Added
HFM Investment Advisors, LLC14$3070.00%−1−6.7%Reduced
Abound Wealth Management7$1540.00%00.0%Unchanged
Nemes Rush Group LLC7$1530.00%+7New
Dunhill Financial, LLC4$880.00%+4New
Hughes Financial Services, LLC2$440.00%+2New
Macquarie Group Ltd0$00.00%−5,381,675−100.0%Sold out
Encompass Capital Advisors LLC0$00.00%−2,182,088−100.0%Sold out
Aventail Capital Group, LP0$00.00%−400,928−100.0%Sold out
Nicholas Investment Partners, LP0$00.00%−165,899−100.0%Sold out
Lazard Asset Management LLC0$00.00%−163,392−100.0%Sold out
Quantbot Technologies LP0$00.00%−115,254−100.0%Sold out
Empowered Funds, LLC0$00.00%−69,161−100.0%Sold out
Mitsubishi UFJ Asset Management (UK) Ltd.0$00.00%−68,000−100.0%Sold out
CBOE Vest Financial, LLC0$00.00%−47,930−100.0%Sold out
Susquehanna Fundamental Investments, LLC0$00.00%−34,637−100.0%Sold out
Doheny Asset Management0$00.00%−34,250−100.0%Sold out
Group One Trading, L.P.0$00.00%−32,727−100.0%Sold out
Inceptionr LLC0$00.00%−28,655−100.0%Sold out
Semanteon Capital Management, LP0$00.00%−23,771−100.0%Sold out
Henshaw Capital LLC0$00.00%−21,905−100.0%Sold out
GTS Securities LLC0$00.00%−20,378−100.0%Sold out
Cynosure Management, LLC0$00.00%−19,242−100.0%Sold out
Graham Capital Management, L.P.0$00.00%−14,342−100.0%Sold out
Simplex Trading, LLC0$00.00%−12,053−100.0%Sold out
Legato Capital Management LLC0$00.00%−11,497−100.0%Sold out
Quantedge Capital Pte Ltd0$00.00%−10,600−100.0%Sold out