Magnolia Oil & Gas Corporation
US ˙ NYSE ˙ US5596631094

SecurityMGY / Magnolia Oil & Gas Corporation
InstitutionEntropy Technologies, LP
Latest Disclosed Ownership81,810 shares
Latest Disclosed Value $ 2,582,742
Entropy Technologies, LP reports 51.35% increase in ownership of MGY / Magnolia Oil & Gas Corporation

On May 14, 2026 - Entropy Technologies, LP filed a 13F-HR form disclosing ownership of 81,810 shares of Magnolia Oil & Gas Corporation (US:MGY) valued at $2,582,742 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 54,054 shares of Magnolia Oil & Gas Corporation. This represents a change in shares of 51.35% during the quarter. The current value of the position is $2,287,408 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F MAGNOLIA OIL GAS CL A ORD CL A 559663109 81,810 27,756 51.35 2,583 118.26 0.1191
2026-02-13 2025-12-31 13F MAGNOLIA OIL GAS CL A ORD CL A 559663109 54,054 54,054 1,183 0.0642
2025-08-12 2025-06-30 13F MAGNOLIA OIL GAS CL A ORD CL A 559663109 0 -11,900 -100.00 0 -100.00
2025-05-12 2025-03-31 13F MAGNOLIA OIL GAS CL A ORD CL A 559663109 11,900 -14,603 -55.10 301 -51.53 0.0293
2025-01-28 2024-12-31 13F MAGNOLIA OIL GAS CL A ORD CL A 559663109 26,503 14,365 118.35 620 109.12 0.0638
2024-11-04 2024-09-30 13F MAGNOLIA OIL GAS CL A ORD CL A 559663109 12,138 -8,387 -40.86 296 -43.08 0.0311
2024-08-12 2024-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 20,525 -41,525 -66.92 520 -67.70 0.0562
2024-05-08 2024-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 62,050 5,946 10.60 1,610 34.84 0.1717
2024-02-14 2023-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 56,104 56,104 1,194 0.2214
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.