Magnolia Oil & Gas Corporation
US ˙ NYSE ˙ US5596631094

SecurityMGY / Magnolia Oil & Gas Corporation
InstitutionAmalgamated Bank
Latest Disclosed Ownership51,894 shares
Latest Disclosed Value $ 1,638
Amalgamated Bank reports 2.39% decrease in ownership of MGY / Magnolia Oil & Gas Corporation

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 51,894 shares of Magnolia Oil & Gas Corporation (US:MGY) valued at $1,638,294 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 53,167 shares of Magnolia Oil & Gas Corporation. This represents a change in shares of -2.39% during the quarter. The current value of the position is $1,450,956 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)
2026-05-08 2026-03-31 13F MAGNOLIA OIL GAS COM 559663109 51,894 -1,273 -2.39 2 0.00 0.0125
2026-02-05 2025-12-31 13F MAGNOLIA OIL GAS COM 559663109 53,167 -140 -0.26 1 0.00 0.0084
2025-10-29 2025-09-30 13F MAGNOLIA OIL GAS COM 559663109 53,307 552 1.05 1 0.00 0.0091
2025-08-04 2025-06-30 13F MAGNOLIA OIL GAS COM 559663109 52,755 -1,068 -1.98 1 0.00 0.0092
2025-04-25 2025-03-31 13F MAGNOLIA OIL GAS COM 559663109 53,823 -1,758 -3.16 1 0.00 0.0116
2025-02-04 2024-12-31 13F MAGNOLIA OIL GAS COM 559663109 55,581 704 1.28 1 0.00 0.0107
2024-10-30 2024-09-30 13F MAGNOLIA OIL GAS COM 559663109 54,877 -265 -0.48 1 0.00 0.0110
2024-08-12 2024-06-30 13F MAGNOLIA OIL GAS COM 559663109 55,142 -3,133 -5.38 1 0.00 0.0119
2024-04-23 2024-03-31 13F MAGNOLIA OIL GAS COM 559663109 58,275 33,315 133.47 2 0.0129
2024-02-06 2023-12-31 13F MAGNOLIA OIL GAS COM 559663109 24,960 -2,195 -8.08 1 0.0042
2023-11-08 2023-09-30 13F MAGNOLIA OIL GAS COM 559663109 27,155 257 0.96 1 0.0053
2023-08-11 2023-06-30 13F MAGNOLIA OIL GAS COM 559663109 26,898 2,247 9.12 1 0.0045
2023-05-02 2023-03-31 13F MAGNOLIA OIL GAS COM 559663109 24,651 -4,253 -14.71 1 0.0046
2023-02-10 2022-12-31 13F MAGNOLIA OIL GAS COM 559663109 28,904 1,905 7.06 1 -100.00 0.0060
2022-11-09 2022-09-30 13F MAGNOLIA OIL GAS COM 559663109 26,999 641 2.43 535 -3.25 0.0052
2022-08-15 2022-06-30 13F MAGNOLIA OIL GAS COM 559663109 26,358 2,749 11.64 553 -0.90 0.0052
2022-08-25 2022-03-31 13F/A-1 MAGNOLIA OIL & GAS COM 559663109 23,609 -1,756 -6.92 558 16.49 0.0043
2022-06-30 2022-03-31 13F MAGNOLIA OIL GAS COM 559663109 23,609 -1,756 558 0.0044
2022-02-15 2021-12-31 13F/A-1 MAGNOLIA OIL GAS COM 559663109 25,365 594 2.40 479 8.62 0.0035
2022-02-15 2021-12-31 13F MAGNOLIA OIL GAS COM 559663109 25,365 594 479 0.0035
2021-10-29 2021-09-30 13F MAGNOLIA OIL GAS COM 559663109 24,771 -1,524 -5.80 441 7.30 0.0037
2021-08-16 2021-06-30 13F MAGNOLIA OIL GAS COM 559663109 26,295 9,259 54.35 411 109.69 0.0033
2021-05-13 2021-03-31 13F MAGNOLIA OIL GAS COM 559663109 17,036 -1,605 -8.61 196 48.48 0.0073
2021-02-12 2020-12-31 13F MAGNOLIA OIL GAS COM 559663109 18,641 102 0.55 132 37.50 0.0050
2020-10-30 2020-09-30 13F MAGNOLIA OIL GAS COM 559663109 18,539 -663 -3.45 96 -17.24 0.0042
2020-08-10 2020-06-30 13F MAGNOLIA OIL GAS COM 559663109 19,202 3,600 23.07 116 87.10 0.0054
2020-05-13 2020-03-31 13F MAGNOLIA OIL GAS COM 559663109 15,602 -522 -3.24 62 -69.46 0.0015
2020-02-13 2019-12-31 13F MAGNOLIA OIL GAS COM 559663109 16,124 1,214 8.14 203 22.29 0.0037
2019-11-13 2019-09-30 13F MAGNOLIA OIL GAS COM 559663109 14,910 -148 -0.98 166 -4.60 0.0035
2019-08-14 2019-06-30 13F MAGNOLIA OIL GAS COM 559663109 15,058 15,058 174 0.0041
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.