Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionBancorpSouth Bank
Latest Disclosed Ownership8,828 shares
Latest Disclosed Value $ 1,435,697
BancorpSouth Bank reports 3.86% increase in ownership of MPC / Marathon Petroleum Corporation

On January 30, 2026 - BancorpSouth Bank filed a 13F-HR form disclosing ownership of 8,828 shares of Marathon Petroleum Corporation (MX:MPC) valued at $1,435,697 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 8,500 shares of Marathon Petroleum Corporation. This represents a change in shares of 3.86% during the quarter.

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)
2026-01-30 2025-12-31 13F MARATHON PETE COM 56585A102 8,828 328 3.86 1,436 -12.39 0.0840
2025-11-13 2025-09-30 13F MARATHON PETE COM 56585A102 8,500 413 5.11 1,638 21.97 0.0994
2025-08-14 2025-06-30 13F MARATHON PETE COM 56585A102 8,087 -109 -1.33 1,343 12.48 0.0884
2025-05-14 2025-03-31 13F MARATHON PETE COM 56585A102 8,196 115 1.42 1,194 5.94 0.0853
2025-02-13 2024-12-31 13F MARATHON PETE COM 56585A102 8,081 -225 -2.71 1,127 -16.70 0.0764
2024-11-13 2024-09-30 13F MARATHON PETE COM 56585A102 8,306 28 0.34 1,353 -5.78 0.0932
2024-08-13 2024-06-30 13F MARATHON PETE COM 56585A102 8,278 0 0.00 1,436 -13.91 0.1077
2024-05-14 2024-03-31 13F MARATHON PETE COM 56585A102 8,278 55 0.67 1,668 36.83 0.1215
2024-02-13 2023-12-31 13F MARATHON PETE COM 56585A102 8,223 0 0.00 1,220 -2.01 0.0991
2023-11-13 2023-09-30 13F MARATHON PETE COM 56585A102 8,223 212 2.65 1,244 33.19 0.1094
2023-08-14 2023-06-30 13F MARATHON PETE COM 56585A102 8,011 -97 -1.20 934 -14.55 0.0814
2023-05-12 2023-03-31 13F MARATHON PETE COM 56585A102 8,108 -98 -1.19 1,093 14.45 0.1007
2023-02-13 2022-12-31 13F MARATHON PETE COM 56585A102 8,206 -280 -3.30 955 13.29 0.0882
2022-11-10 2022-09-30 13F MARATHON PETE COM 56585A102 8,486 0 0.00 843 20.77 0.0873
2022-08-12 2022-06-30 13F MARATHON PETE COM 56585A102 8,486 -260 -2.97 698 -6.68 0.1003
2022-05-13 2022-03-31 13F MARATHON PETE COM 56585A102 8,746 -338 -3.72 748 28.74 0.0931
2022-02-11 2021-12-31 13F MARATHON PETE COM 56585A102 9,084 23 0.25 581 3.75 0.0724
2021-11-10 2021-09-30 13F MARATHON PETE COM 56585A102 9,061 2,707 42.60 560 45.83 0.0781
2021-08-13 2021-06-30 13F MARATHON PETE COM 56585A102 6,354 203 3.30 384 16.72 0.0558
2021-05-11 2021-03-31 13F MARATHON PETE COM 56585A102 6,151 -2,817 -31.41 329 -11.32 0.0499
2021-02-04 2020-12-31 13F MARATHON PETE COM 56585A102 8,968 57 0.64 371 41.60 0.0582
2020-11-09 2020-09-30 13F MARATHON PETE COM 56585A102 8,911 -22 -0.25 262 -21.56 0.0515
2020-07-27 2020-06-30 13F MARATHON PETE COM 56585A102 8,933 57 0.64 334 59.05 0.0689
2020-04-30 2020-03-31 13F MARATHON PETE COM 56585A102 8,876 318 3.72 210 -59.30 0.0529
2020-02-04 2019-12-31 13F MARATHON PETE COM 56585A102 8,558 738 9.44 516 8.63 0.0954
2019-11-06 2019-09-30 13F MARATHON PETE COM 56585A102 7,820 -44 -0.56 475 8.20 0.0447
2019-07-30 2019-06-30 13F MARATHON PETE COM 56585A102 7,864 -2,640 -25.13 439 -30.21 0.0425
2019-05-02 2019-03-31 13F MARATHON PETE COM 56585A102 10,504 1,011 10.65 629 12.12 0.0633
2019-02-07 2018-12-31 13F MARATHON PETE COM 56585A102 9,493 440 4.86 561 -22.41 0.0660
2018-10-25 2018-09-30 13F MARATHON PETE COM 56585A102 9,053 1,330 17.22 723 33.39 0.0674
2018-08-09 2018-06-30 13F MARATHON PETE COM 56585A102 7,723 855 12.45 542 7.97 0.0491
2018-05-03 2018-03-31 13F MARATHON PETE COM 56585A102 6,868 6,868 502 0.0481
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.