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MGY in the 13F filings

Magnolia Oil & Gas Corp · CUSIP 559663109

Sector · EnergyTheme · Energy and power infrastructure· L3VLUP-definedTheme · Oil and gas
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 10 Feb 2026
Managers listing it
27
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 5 listed it in both
Shares listed
24,453,092
combined, among listed positions
Reported value
$535m
combined, at the quarter end

Among the 92 comparable managers: 13 buyers (opened or added shares) and 17 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -1,409,699.

Managers listing MGY in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

27 of 27 holders

ActionFiling
Janus Henderson Group Ltd6,109,462$134m0.06%Trimmed-245,75717 Feb 2026 (the filing on sec.gov)
Wellington Management Group LLP5,206,612$114munder 0.1%Trimmed-18,55617 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP4,747,597$104munder 0.1%Added+88,93017 Feb 2026 (the filing on sec.gov)
Renaissance Technologies LLC1,184,302$26munder 0.1%Added+67,99112 Feb 2026 (the filing on sec.gov)
Voloridge Investment Management LLC969,487$21m0.07%Added+521,45917 Feb 2026 (the filing on sec.gov)
Balyasny Asset Management LLC807,988$18munder 0.1%Trimmed-969,16117 Feb 2026 (the filing on sec.gov)
Invesco Ltd715,497$16munder 0.1%Trimmed-42,51219 Feb 2026 (the filing on sec.gov)
Arrowstreet Capital LP703,189$15munder 0.1%Trimmed-698,09013 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP426,009$9.3munder 0.1%Trimmed-278,86117 Feb 2026 (the filing on sec.gov)
Man Group PLC398,944$8.7munder 0.1%Trimmed-74,38817 Feb 2026 (the filing on sec.gov)
Millennium Management LLC371,528$8.1munder 0.1%Added+344,06917 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC361,863$7.9munder 0.1%Trimmed-227,16212 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC349,964$7.7munder 0.1%Added+225,96917 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC318,574$7.0munder 0.1%Added+40,08617 Feb 2026 (the filing on sec.gov)
Point72 Asset Management LP302,124$6.6munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP283,431$6.2munder 0.1%Added+244,83117 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.276,774$6.1munder 0.1%Added+214,89717 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc205,480$4.5munder 0.1%Added+4,54117 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP171,100$3.7munder 0.1%Trimmed-383,40017 Feb 2026 (the filing on sec.gov)
Woodline Partners LP169,213$3.7munder 0.1%Trimmed-473,97117 Feb 2026 (the filing on sec.gov)
Tudor Investment Corp125,840$2.8munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC124,875$2.7munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP32,527$712kunder 0.1%Trimmed-8,30617 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP29,915$655kunder 0.1%Trimmed-13,96617 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)21,459$470kunder 0.1%Trimmed-1,89217 Feb 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (3)

Exited (3)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
11 in Q3 2024 to 5 in Q2 2026

Tracked managers listing it, at least.

05101520192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
MGY by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20181$2.1mn.a.n.a.
Q3 20188$322mn.a.n.a.
Q4 20189$528mn.a.n.a.
Q1 20197$545mn.a.n.a.
Q2 20193$185mn.a.n.a.
Q3 20194$419mn.a.n.a.
Q4 20195$472mn.a.n.a.
Q1 20202$8.5mn.a.n.a.
Q2 20202$13mn.a.n.a.
Q1 20214$118mn.a.n.a.
Q2 20214$442mn.a.n.a.
Q3 20217$506mn.a.n.a.
Q4 20215$618mn.a.n.a.
Q1 20227$1.0bnn.a.n.a.
Q2 20227$1.1bnn.a.n.a.
Q3 20228$727mn.a.n.a.
Q4 20228$871mn.a.n.a.
Q1 20239$588mn.a.n.a.
Q2 20238$490mn.a.n.a.
Q3 20238$503mn.a.n.a.
Q4 20237$461m43
Q1 20248$585m62
Q2 202411$570m56
Q3 202411$520m56
Q4 202410$464m57
Q1 202513$591m85
Q2 20257$491m44
Q3 20256$337m06
Q4 20255$291m1317
Q1 20267$636m2011
Q2 20265$469m1219

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

MGY and GEV →MGY and XOM →MGY and CVX →Choose a stock to compare with MGY →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own MGY, latest filings →Back to the 13F Explorer →