Magnolia Oil & Gas Corporation
US ˙ NYSE ˙ US5596631094

SecurityMGY / Magnolia Oil & Gas Corporation
InstitutionMan Group plc
Latest Disclosed Ownership204,321 shares
Latest Disclosed Value $ 6,450,414
Man Group plc reports 48.78% decrease in ownership of MGY / Magnolia Oil & Gas Corporation

On May 15, 2026 - Man Group plc filed a 13F-HR form disclosing ownership of 204,321 shares of Magnolia Oil & Gas Corporation (US:MGY) valued at $6,450,414 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 398,944 shares of Magnolia Oil & Gas Corporation. This represents a change in shares of -48.78% during the quarter. The current value of the position is $5,620,871 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)
2026-05-15 2026-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 204,321 -194,623 -48.78 6,450 -26.13 0.0117
2026-02-17 2025-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 398,944 -74,388 -15.72 8,733 -22.71 0.0148
2025-11-14 2025-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 473,332 140,625 42.27 11,298 51.06 0.0196
2025-08-14 2025-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 332,707 -63,588 -16.05 7,479 -25.28 0.0142
2025-05-15 2025-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 396,295 74,786 23.26 10,010 33.18 0.0254
2025-02-14 2024-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 321,509 27,039 9.18 7,517 4.53 0.0198
2024-11-14 2024-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 294,470 294,470 7,191 0.0187
2024-08-14 2024-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 0 -30,747 -100.00 0 -100.00
2024-05-15 2024-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 30,747 3,794 14.08 798 39.09 0.0020
2024-02-14 2023-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 26,953 574 -44.80 0.0016
2023-11-14 2023-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 1,038 113.58 0.0032
2023-08-14 2023-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 23,275 23,275 486 0.0015
2023-05-15 2023-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 0 -31,100 -100.00 0 -100.00
2023-02-14 2022-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 31,100 -2,569 -7.63 729 9.30 0.0026
2022-11-14 2022-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 33,669 667 -8.13 0.0031
2022-08-15 2022-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 726 123.38 0.0031
2022-05-16 2022-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 13,730 721 5.54 325 32.65 0.0011
2022-02-14 2021-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 13,009 13,009 245 0.0008
2021-08-16 2021-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 0 -13,900 -100.00 0 -100.00
2021-05-17 2021-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 13,900 2,500 21.93 160 100.00 0.0007
2021-02-16 2020-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 11,400 11,400 80 0.0004
2020-11-16 2020-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 0 -181,601 -100.00 0 -100.00
2020-08-14 2020-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 181,601 -465,672 -71.94 1,100 -57.53 0.0055
2020-05-15 2020-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 647,273 -303,730 -31.94 2,590 -78.35 0.0168
2020-02-18 2019-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 951,003 135,404 16.60 11,964 32.16 0.0393
2019-11-14 2019-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 815,599 140,415 20.80 9,053 15.78 0.0336
2019-08-14 2019-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 675,184 324,501 92.53 7,819 85.81 0.0283
2019-05-15 2019-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 350,683 130,709 59.42 4,208 70.64 0.0160
2019-02-14 2018-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 219,974 219,974 2,466 0.0110
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.