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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, Q2 2026

Institutional positions in Magnolia Oil & Gas Corp as of Jun 30, 2026. 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
411
+12 vs. Q1 2026
Shares held
205.5M
+8.50M (+4.3%) vs. Q1 2026
Total value
$5.28B
−$890.8M (−14.4%) vs. Q1 2026
New holders
59
161 more added
Sold out
47
142 more reduced

7 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2026: 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 holdersQ2 2026: 411 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 heldQ2 2026: $5.28B
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, Q2 2026

Shares, value and share of portfolio for each institution holding Magnolia Oil & Gas Corp; share changes are against Q1 2026.

Institutions holding MGY in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
FMR LLC25,878$662.0K0.00%+4,093+18.8%Added
Neuberger Berman Group LLC25,618$655.3K0.00%−392,629−93.9%Reduced
Evolve Private Wealth, LLC24,846$635.6K0.04%+391+1.6%Added
New Age Alpha Advisors, LLC24,496$626.6K0.03%−2,909−10.6%Reduced
MML Investors Services, LLC24,454$625.5K0.00%+9,491+63.4%Added
Fiduciary Trust Co24,152$617.8K0.01%−1,290−5.1%Reduced
James Investment Research Inc23,887$611.0K0.06%+151+0.6%Added
EntryPoint Capital, LLC23,498$601.1K0.15%00.0%Unchanged
CSS LLC23,350$597.3K0.03%+23,350New
Vise Technologies, Inc.23,084$590.5K0.01%+12,632+120.9%Added
Gallacher Capital Management LLC22,952$587.1K0.33%−12,431−35.1%Reduced
Axq Capital, LP22,843$584.3K0.06%+22,843New
CI Private Wealth, LLC22,789$582.9K0.00%−102,104−81.8%Reduced
Commonwealth Equity Services, LLC22,713$581.0K0.00%+60.0%Added
MQS Management LLC21,230$543.1K0.66%+21,230New
Mutual of America Capital Management LLC21,183$541.9K0.01%+483+2.3%Added
ExodusPoint Capital Management, LP20,862$533.6K0.00%+20,862New
M&T Bank Corp20,477$523.5K0.00%−96−0.5%Reduced
Swiss Life Asset Management Ltd20,408$522.0K0.00%+2,464+13.7%Added
Atria Investments LLC19,952$510.4K0.01%−4,520−18.5%Reduced
Keybank National Association18,766$480.0K0.00%+1,084+6.1%Added
Fieldview Capital Management, LLC18,697$478.3K0.14%+8,794+88.8%Added
Xponance, Inc.18,032$461.3K0.00%+1,363+8.2%Added
Sequoia Financial Advisors, LLC17,662$451.8K0.00%−6,204−26.0%Reduced
CIBC Bancorp USA Inc.17,652$451.5K0.00%+2,414+15.8%Added
CIBC Asset Management Inc17,201$440.0K0.00%00.0%Unchanged
Commerce Bank17,029$435.6K0.00%−37−0.2%Reduced
Vident Advisory, LLC16,956$433.7K0.00%−28,835−63.0%Reduced
Ameritas Investment Partners, Inc.16,888$432.0K0.01%+2,188+14.9%Added
Simplex Trading, LLC16,880$431.8K0.01%−96−0.6%Reduced
State of Wyoming16,273$416.3K0.04%+5,396+49.6%Added
Aviva PLC16,124$412.5K0.00%+16,124New
Ritholtz Wealth Management16,071$411.1K0.01%+77+0.5%Added
Hantz Financial Services, Inc.15,924$407.0K0.01%+3,759+30.9%Added
DnB Asset Management AS15,880$406.2K0.00%+5,751+56.8%Added
Regions Financial Corp15,873$406.0K0.00%−2,299−12.7%Reduced
Lido Advisors, LLC15,810$404.4K0.00%+80+0.5%Added
Tyche Wealth Partners LLC15,445$395.1K0.06%00.0%Unchanged
Amundi15,444$395.1K0.00%+15,444New
IMC-Chicago, LLC15,129$387.0K0.00%−1,829−10.8%Reduced
Guggenheim Capital LLC14,921$381.7K0.00%+34+0.2%Added
Resources Investment Advisors, LLC.14,746$377.2K0.00%+255+1.8%Added
AMG National Trust Bank14,357$367.3K0.01%+6,037+72.6%Added
Mitsubishi UFJ Trust & Banking Corp14,307$366.0K0.00%−75,879−84.1%Reduced
Fulton Bank, N.A.14,292$365.6K0.01%+2,923+25.7%Added
Schonfeld Strategic Advisors LLC14,282$365.3K0.00%−83,673−85.4%Reduced
Park Avenue Securities LLC14,171$362.0K0.00%00.0%Unchanged
Vestcor Inc13,974$357.0K0.01%00.0%Unchanged
STRS Ohio13,700$350.4K0.00%−600−4.2%Reduced
Sanctuary Advisors, LLC13,647$349.1K0.00%+903+7.1%Added
Ensign Peak Advisors, Inc13,559$346.8K0.00%−1,300−8.7%Reduced
Resonant Capital Advisors, LLC13,444$343.9K0.02%−68−0.5%Reduced
Ballentine Partners, LLC13,426$343.4K0.00%+5,695+73.7%Added
Sit Investment Associates Inc13,055$334.0K0.01%+13,055New
Coldstream Capital Management Inc12,771$326.7K0.00%−86−0.7%Reduced
Bokf, NA12,644$323.4K0.00%−1,344−9.6%Reduced
Savant Capital, LLC11,052$313.9K0.00%+11,052New
Bleakley Financial Group, LLC12,134$310.4K0.00%+277+2.3%Added
DRW Securities, LLC12,120$310.0K0.02%−2,416−16.6%Reduced
XTX Topco Ltd12,065$308.6K0.00%+12,065New
Virginia Retirement Systems Et Al11,700$299.3K0.00%+11,700New
Advisors Asset Management, Inc.11,428$292.3K0.00%−260−2.2%Reduced
Pacer Advisors, Inc.11,102$284.0K0.00%+1,499+15.6%Added
Callan Family Office, LLC11,045$282.5K0.01%+297+2.8%Added
Greenleaf Trust10,842$277.3K0.00%00.0%Unchanged
Wiley Bros.-Aintree Capital, LLC10,553$269.9K0.00%−432−3.9%Reduced
ZWJ Investment Counsel Inc10,459$267.5K0.01%+10,459New
JustInvest LLC10,454$267.4K0.00%+1,143+12.3%Added
Rockefeller Capital Management L.P.10,373$265.4K0.00%−456−4.2%Reduced
Isthmus Partners, LLC10,353$264.8K0.03%+744+7.7%Added
Brucke Financial, Inc.10,261$262.5K0.12%−612−5.6%Reduced
Public Employees Retirement Association of Colorado10,106$259.0K0.00%00.0%Unchanged
Ares Systematic Credit Ltd10,086$258.0K0.16%+10,086New
US Bancorp10,051$257.1K0.00%+219+2.2%Added
Marathon Capital Management10,000$255.8K0.05%00.0%Unchanged
Loring Wolcott & Coolidge Fiduciary Advisors LLP10,000$255.8K0.00%00.0%Unchanged
Stock Yards Bank & Trust Co9,883$252.8K0.01%00.0%Unchanged
Merit Financial Group, LLC9,631$246.4K0.00%+1,053+12.3%Added
Ethic Inc.9,521$243.5K0.00%+1,900+24.9%Added
Blackstone Group Inc.9,353$239.3K0.00%+9,353New
ISAM Funds (UK) Ltd9,285$237.5K0.17%+9,285New
Caitong International Asset Management Co., Ltd9,188$235.0K0.03%+6,267+214.5%Added
IFP Advisors, Inc9,180$234.8K0.00%+999+12.2%Added
Retirement Guys Formula LLC8,987$229.9K0.09%+11+0.1%Added
Profund Advisors LLC8,679$222.0K0.01%−1,276−12.8%Reduced
HB Wealth Management, LLC8,653$221.3K0.00%−3,658−29.7%Reduced
Fox Run Management, L.L.C.8,510$217.7K0.04%+8,510New
Jane Street Group, LLC8,349$213.6K0.00%−269,421−97.0%Reduced
Aquatic Capital Management LLC8,319$212.8K0.01%−45,300−84.5%Reduced
Vista Finance, LLC8,236$210.7K0.12%−414−4.8%Reduced
Revolve Wealth Partners, LLC8,213$210.1K0.02%+8,213New
GAMMA Investing LLC7,572$193.7K0.01%+697+10.1%Added
Virtus Investment Advisers, Inc.7,197$184.1K0.04%+1,107+18.2%Added
KBC Group NV6,583$168.0K0.00%00.0%Unchanged
Nisa Investment Advisors, LLC6,506$166.4K0.00%+3,608+124.5%Added
Signaturefd, LLC6,323$161.7K0.00%+1,958+44.9%Added
Central Pacific Bank - Trust Division5,820$148.9K0.02%+5,820New
Allworth Financial LP5,760$147.3K0.00%+571+11.0%Added
Advisor Group Holdings, Inc.5,098$130.4K0.00%−169−3.2%Reduced
Globeflex Capital L P4,725$120.9K0.02%+4,725New