Magnolia Oil & Gas Corporation
US ˙ NYSE ˙ US5596631094

SecurityMGY / Magnolia Oil & Gas Corporation
InstitutionCitigroup Inc
Latest Disclosed Ownership95,272 shares
Latest Disclosed Value $ 3,007,737
Citigroup Inc reports 0.10% decrease in ownership of MGY / Magnolia Oil & Gas Corporation

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 95,272 shares of Magnolia Oil & Gas Corporation (US:MGY) valued at $3,007,737 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 95,365 shares of Magnolia Oil & Gas Corporation. This represents a change in shares of -0.10% during the quarter. The current value of the position is $2,663,805 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)
2026-05-11 2026-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 95,272 -93 -0.10 3,008 44.08 0.0006
2026-02-13 2025-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 95,365 -101,439 -51.54 2,088 -55.57 0.0009
2025-11-10 2025-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 196,804 -153,243 -43.78 4,698 -40.31 0.0021
2025-08-11 2025-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 350,047 15,472 4.62 7,869 -6.89 0.0039
2025-05-12 2025-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 334,575 4,265 1.29 8,451 9.44 0.0043
2025-02-12 2024-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 330,310 16,532 5.27 7,723 0.78 0.0046
2024-11-12 2024-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 313,778 73,431 30.55 7,662 25.81 0.0044
2024-08-12 2024-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 240,347 -54,351 -18.44 6,090 -20.36 0.0039
2024-05-10 2024-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 294,698 -171,269 -36.76 7,647 -22.91 0.0050
2024-02-09 2023-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 465,967 276,324 145.71 9,920 128.36 0.0070
2023-12-06 2023-09-30 13F/A-1 MAGNOLIA OIL & GAS CL A 559663109 189,643 -20,597 -9.80 4,345 -1.14 0.0032
2023-11-09 2023-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 189,643 -20,597 4,345 0.0013
2023-08-10 2023-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 210,240 -11,061 -5.00 4,394 -9.25 0.0029
2023-05-11 2023-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 221,301 -126,388 -36.35 4,842 -40.61 0.0034
2023-02-09 2022-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 347,689 129,073 59.04 8,153 88.25 0.0065
2022-11-10 2022-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 218,616 39,849 22.29 4,331 15.40 0.0031
2022-08-10 2022-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 178,767 3,608 2.06 3,753 -9.39 0.0028
2022-05-12 2022-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 175,159 -1,914 -1.08 4,142 23.97 0.0025
2022-02-10 2021-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 177,073 78,137 78.98 3,341 89.83 0.0018
2021-11-10 2021-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 98,936 -57,348 -36.69 1,760 -27.96 0.0010
2021-08-10 2021-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 156,284 24,234 18.35 2,443 61.15 0.0015
2021-05-13 2021-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 132,050 86,785 191.73 1,516 373.75 0.0010
2021-02-11 2020-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 45,265 21,358 89.34 320 160.16 0.0002
2020-11-12 2020-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 23,907 -31,900 -57.16 123 -63.82 0.0001
2020-08-12 2020-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 55,807 2,437 4.57 340 59.62 0.0003
2020-05-12 2020-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 53,370 -12,573 -19.07 213 -74.31 0.0002
2020-02-12 2019-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 65,943 -31,901 -32.60 829 -23.66 0.0006
2019-11-08 2019-09-30 13F MAGNOLIA OIL & GAS CL A 559663109 97,844 -59,887 -37.97 1,086 -40.56 0.0009
2019-11-08 2019-09-30 13F TPG PACE HLDGS UNIT 99/99/9999 G89827102 37,023 0 401 0.0003
2019-08-12 2019-06-30 13F MAGNOLIA OIL & GAS CL A 559663109 157,731 -126,390 -44.48 1,827 -46.41 0.0015
2019-08-12 2019-06-30 13F TPG PACE HLDGS UNIT 99/99/9999 G89827102 37,023 0 404 0.0003
2019-05-13 2019-03-31 13F MAGNOLIA OIL & GAS CL A 559663109 284,121 38,814 15.82 3,409 23.96 0.0033
2019-05-13 2019-03-31 13F TPG PACE HLDGS UNIT 99/99/9999 G89827102 37,023 0 398 0.0004
2019-02-12 2018-12-31 13F MAGNOLIA OIL & GAS CL A 559663109 245,307 245,307 2,750 0.0028
2019-02-12 2018-12-31 13F TPG PACE HLDGS UNIT 99/99/9999 G89827102 37,023 37,023 386 0.0004
2018-11-13 2018-09-30 13F TPG PACE ENERGY HLDGS CL A 872656103 0 -100,000 -100.00 0 -100.00
2018-08-10 2018-06-30 13F TPG PACE ENERGY HLDGS CL A 872656103 100,000 -385,000 -79.38 1,087 -77.83 0.0010
2018-05-11 2018-03-31 13F TPG PACE ENERGY HLDGS CL A 872656103 485,000 485,000 4,903 0.0040
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.