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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, Q1 2026

Institutional positions in Magnolia Oil & Gas Corp as of Mar 31, 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
406
+37 vs. Q4 2025
Shares held
203.8M
+24.9M (+13.9%) vs. Q4 2025
Total value
$6.39B
+$2.47B (+62.9%) vs. Q4 2025
New holders
76
148 more added
Sold out
39
138 more reduced

10 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 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 holdersQ1 2026: 406 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 heldQ1 2026: $6.39B
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, Q1 2026

Shares, value and share of portfolio for each institution holding Magnolia Oil & Gas Corp; share changes are against Q4 2025.

Institutions holding MGY in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Evolve Private Wealth, LLC24,455$772.0K0.04%+1,742+7.7%Added
Atria Investments LLC24,472$772.6K0.01%−44−0.2%Reduced
Tower Research Capital LLC (TRC)24,803$783.0K0.02%+17,547+241.8%Added
Centiva Capital, LP25,152$794.0K0.04%+25,152New
Fiduciary Trust Co25,442$803.2K0.01%00.0%Unchanged
Teacher Retirement System of Texas25,664$810.2K0.00%−12,499−32.8%Reduced
Maryland State Retirement & Pension System26,363$832.3K0.02%−505−1.9%Reduced
New Age Alpha Advisors, LLC27,405$865.2K0.04%−667−2.4%Reduced
ProShare Advisors LLC28,169$889.3K0.00%−7,060−20.0%Reduced
O'Shaughnessy Asset Management, LLC30,386$959.3K0.00%−1,132−3.6%Reduced
Bank of Montreal30,587$965.6K0.00%+716+2.4%Added
Quantbot Technologies LP30,767$971.3K0.04%+30,767New
Pictet Asset Management Holding SA31,206$985.2K0.00%+2,225+7.7%Added
Unison Advisors LLC31,215$985.5K0.07%00.0%Unchanged
Skopos Labs, Inc.31,919$1.01M0.03%+10,419+48.5%Added
Glenmede Trust Co NA34,261$1.08M0.01%+1,049+3.2%Added
Gallacher Capital Management LLC35,383$1.12M0.43%+7,683+27.7%Added
Stifel Financial Corp35,996$1.14M0.00%−984−2.7%Reduced
Truist Financial Corp36,412$1.15M0.00%+2,259+6.6%Added
Voya Investment Management LLC36,491$1.15M0.00%+4,134+12.8%Added
Sterling Capital Management LLC37,994$1.20M0.02%−47,578−55.6%Reduced
FORA Capital, LLC38,653$1.22M0.09%+38,653New
Bosman Wealth Management, LLC39,039$1.23M1.08%−3,216−7.6%Reduced
D. E. Shaw & Co., Inc.39,058$1.23M0.00%−237,716−85.9%Reduced
Intech Investment Management LLC39,096$1.23M0.01%−24,840−38.9%Reduced
Jacobs Levy Equity Management, Inc39,286$1.24M0.01%+657+1.7%Added
The PNC Financial Services Group, Inc.41,283$1.30M0.00%−1,502−3.5%Reduced
Oregon Public Employees Retirement Fund41,353$1.31M0.02%−522−1.2%Reduced
SG Americas Securities, LLC43,348$1.37M0.00%−48,570−52.8%Reduced
Oppenheimer Asset Management Inc.44,314$1.40M0.02%+1,234+2.9%Added
Zurcher Kantonalbank (Zurich Cantonalbank)44,584$1.41M0.00%+9,080+25.6%Added
Commonwealth of Pennsylvania Public School Empls Retrmt Sys44,731$1.41M0.01%−612−1.3%Reduced
Dynamic Technology Lab Private Ltd44,972$1.42M0.23%−34,084−43.1%Reduced
Gabelli Funds LLC44,979$1.42M0.01%00.0%Unchanged
Hunter Perkins Capital Management, LLC45,226$1.43M0.33%+2,216+5.2%Added
Vident Advisory, LLC45,791$1.45M0.01%+45,791New
Oak Family Advisors, LLC45,920$1.45M0.45%−1,700−3.6%Reduced
Teachers Retirement System of the State of Kentucky46,062$1.45M0.01%−600−1.3%Reduced
Vanguard Investments Australia, Ltd.46,309$1.46M0.00%+46,309New
Arizona State Retirement System48,368$1.53M0.01%−366−0.8%Reduced
Yousif Capital Management, LLC48,825$1.54M0.02%−596−1.2%Reduced
Gsa Capital Partners LLP48,978$1.55M0.10%−27,694−36.1%Reduced
Police & Firemen's Retirement System of New Jersey49,372$1.56M0.01%00.0%Unchanged
Gotham Asset Management, LLC49,818$1.57M0.00%−2,401−4.6%Reduced
Mariner, LLC50,961$1.61M0.00%+17,583+52.7%Added
Amalgamated Bank51,894$1.64M0.01%−1,273−2.4%Reduced
Aquatic Capital Management LLC53,619$1.69M0.05%+31,972+147.7%Added
Federation des caisses Desjardins du Quebec54,169$1.71M0.01%−10,176−15.8%Reduced
KLP Kapitalforvaltning AS55,800$1.76M0.01%+1,400+2.6%Added
Canada Pension Plan Investment Board56,200$1.77M0.00%−1,000−1.7%Reduced
New York State Teachers Retirement System57,500$1.81M0.00%−6,303−9.9%Reduced
October Effect Ltd58,680$1.85M2.13%+58,680New
New York State Common Retirement Fund59,100$1.87M0.00%+59,100New
Wealth Enhancement Advisory Services, LLC61,864$1.92M0.00%+145+0.2%Added
GF Fund Management Co. Ltd.61,031$1.93M0.03%+7,416+13.8%Added
Albert D Mason Inc61,976$1.96M1.27%+373+0.6%Added
Argent Capital Management LLC63,895$2.02M0.06%+21,206+49.7%Added
Balyasny Asset Management LLC64,518$2.04M0.00%−743,470−92.0%Reduced
Public Employees Retirement System of Ohio68,470$2.16M0.01%+202+0.3%Added
Holocene Advisors, LP68,884$2.17M0.01%+68,884New
Toroso Investments, LLC69,550$2.20M0.01%−47,558−40.6%Reduced
CoreCommodity Management, LLC70,522$2.23M0.41%−12,900−15.5%Reduced
Hilton Capital Management, LLC70,828$2.24M0.17%+8,943+14.5%Added
Mitsubishi UFJ Asset Management (UK) Ltd.72,000$2.27M1.17%+72,000New
Fifth Third Bancorp72,696$2.29M0.00%+71,833+8,323.6%Added
Vanguard Global Advisers, LLC73,328$2.31M0.00%+73,328New
State of Tennessee, Treasury Department74,721$2.36M0.01%+26,600+55.3%Added
Castleark Management LLC74,790$2.36M0.08%00.0%Unchanged
Aster Capital Management (DIFC) Ltd95,544$2.41M0.79%+91,345+2,175.4%Added
Empowered Funds, LLC78,683$2.48M0.02%+78,683New
Louisiana State Employees Retirement System80,200$2.53M0.04%−3,700−4.4%Reduced
LPL Financial LLC80,613$2.54M0.00%+43,968+120.0%Added
Jones Financial Companies LLLP79,141$2.56M0.00%+78,100+7,502.4%Added
Entropy Technologies, LP81,810$2.58M0.12%+27,756+51.3%Added
Wesbanco Bank Inc82,138$2.59M0.07%00.0%Unchanged
State of New Jersey Common Pension Fund D83,048$2.62M0.01%−12,010−12.6%Reduced
Wedge Capital Management L L P85,925$2.71M0.05%+16,770+24.2%Added
Illinois Municipal Retirement Fund88,583$2.80M0.04%−182,309−67.3%Reduced
Mitsubishi UFJ Trust & Banking Corp90,186$2.85M0.01%+7,006+8.4%Added
Tudor Investment Corp Et Al93,600$2.95M0.02%−32,240−25.6%Reduced
Captrust Financial Advisors94,515$2.98M0.01%+35,370+59.8%Added
Citigroup Inc95,272$3.01M0.00%−93−0.1%Reduced
Brinker Capital Investments, LLC95,913$3.03M0.03%−23,263−19.5%Reduced
Campbell Newman Asset Management Inc96,831$3.06M0.25%+1,732+1.8%Added
Schonfeld Strategic Advisors LLC97,955$3.09M0.03%+97,955New
Oliver Luxxe Assets LLC98,414$3.11M0.47%−525−0.5%Reduced
MetLife Investment Management98,917$3.12M0.02%−897−0.9%Reduced
Horizon Investments, LLC100,482$3.15M0.04%+98,010+3,964.8%Added
Royal Bank of Canada100,559$3.17M0.00%−58,565−36.8%Reduced
Segall Bryant & Hamill, LLC108,247$3.42M0.05%−2,768−2.5%Reduced
Anchor Capital Advisors LLC108,471$3.42M0.10%−11,950−9.9%Reduced
Natixis Advisors, L.P.111,036$3.50M0.00%+13,051+13.3%Added
Bridgeway Capital Management, LLC112,500$3.55M0.07%−46,850−29.4%Reduced
Harbor Capital Advisors, Inc.113,121$3.57M0.29%+111,868+8,928.0%Added
State of Alaska, Department of Revenue116,266$3.67M0.04%−3,999−3.3%Reduced
Thrivent Financial for Lutherans120,734$3.81M0.01%−5,115−4.1%Reduced
Qsemble Capital Management, LP121,731$3.84M0.29%+121,731New
CI Private Wealth, LLC124,893$3.94M0.01%+92,265+282.8%Added
Brevan Howard Capital Management LP128,104$4.04M0.04%+95,577+293.8%Added
HSBC Holdings PLC132,456$4.20M0.00%+80,168+153.3%Added