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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 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
27
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 4 listed it in both
Shares listed
26,592,230
combined, among listed positions
Reported value
$796m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 20 buyers (opened or added shares) and 11 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +2,310,238.

Managers listing MGY in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 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 Ltd6,279,636$198m0.09%Added+170,17418 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP6,263,808$198m0.11%Added+5,560,61914 May 2026 (the filing on sec.gov)
AllianceBernstein LP4,451,242$97munder 0.1%Trimmed-296,35515 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC1,701,802$54m0.08%Added+517,50014 May 2026 (the filing on sec.gov)
Two Sigma Investments LP1,693,795$53munder 0.1%Added+1,267,78615 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC983,876$31m0.12%Added+14,38915 May 2026 (the filing on sec.gov)
Invesco Ltd704,724$22munder 0.1%Trimmed-10,77312 May 2026 (the filing on sec.gov)
Point72 Asset Management LP692,589$22munder 0.1%Added+390,46515 May 2026 (the filing on sec.gov)
Millennium Management LLC599,017$19munder 0.1%Added+227,48915 May 2026 (the filing on sec.gov)
AQR Capital Management LLC497,885$16munder 0.1%Added+179,31115 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC454,853$14munder 0.1%Added+329,97815 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC418,247$13munder 0.1%Added+397,27727 Oct 2026 (the filing on sec.gov)
Citadel Advisors LLC364,172$11munder 0.1%Added+14,20815 May 2026 (the filing on sec.gov)
Jane Street Group LLC277,770$8.8munder 0.1%Trimmed-84,09312 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc244,319$7.7munder 0.1%Added+38,83915 May 2026 (the filing on sec.gov)
Man Group PLC204,321$6.5munder 0.1%Trimmed-194,62315 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP192,140$6.1munder 0.1%Added+162,22515 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP128,104$4.0munder 0.1%Added+95,57715 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC97,955$3.1munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Tudor Investment Corp93,600$3.0munder 0.1%Trimmed-32,24015 May 2026 (the filing on sec.gov)
Holocene Advisors LP68,884$2.2munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC64,518$2.0munder 0.1%Trimmed-743,47015 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.39,058$1.2munder 0.1%Trimmed-237,71615 May 2026 (the filing on sec.gov)
Quantbot Technologies LP30,767$971kunder 0.1%Newnew13 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)21,785$688kunder 0.1%Added+32615 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, 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 (5)

Exited (4)

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 →