Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionHosking Partners LLP
Latest Disclosed Ownership210,273 shares
Latest Disclosed Value $ 51,344,461
Hosking Partners LLP reports 24.14% increase in ownership of MPC / Marathon Petroleum Corporation

On April 21, 2026 - Hosking Partners LLP filed a 13F-HR form disclosing ownership of 210,273 shares of Marathon Petroleum Corporation (MX:MPC) valued at $51,344,461 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 169,378 shares of Marathon Petroleum Corporation. This represents a change in shares of 24.14% 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)
2026-04-21 2026-03-31 13F Marathon Petroleum Common Stocks 56585A102 210,273 40,895 24.14 51,344 86.40 1.8390
2026-02-04 2025-12-31 13F Marathon Petroleum Common Stocks 56585A102 169,378 -491 -0.29 27,546 -15.87 0.9358
2025-10-23 2025-09-30 13F Marathon Petroleum Common Stocks 56585A102 169,869 89 0.05 32,741 16.09 1.1849
2025-08-07 2025-06-30 13F Marathon Petroleum Common Stocks 56585A102 169,780 -34,789 -17.01 28,202 -5.37 1.1236
2025-05-12 2025-03-31 13F Marathon Petroleum Common Stocks 56585A102 204,569 -23,942 -10.48 29,804 -6.51 1.2582
2025-02-05 2024-12-31 13F Marathon Petroleum Common Stocks 56585A102 228,511 -654 -0.29 31,877 -14.61 1.2468
2024-11-13 2024-09-30 13F Marathon Petroleum COM 56585A102 229,165 -8,161 -3.44 37,333 -9.32 1.4397
2024-07-29 2024-06-30 13F Marathon Petroleum COM 56585A102 237,326 16,285 7.37 41,171 -7.56 1.5239
2024-05-02 2024-03-31 13F Marathon Petroleum COM 56585A102 221,041 -672 -0.30 44,540 35.41 1.6429
2024-02-13 2023-12-31 13F Marathon Petroleum COM 56585A102 221,713 -15,800 -6.65 32,893 -8.49 1.3883
2023-11-08 2023-09-30 13F Marathon Petroleum COM 56585A102 237,513 39,823 20.14 35,945 55.94 1.5918
2023-08-02 2023-06-30 13F Marathon Petroleum COM 56585A102 197,690 17,541 9.74 23,051 -5.10 0.9739
2023-05-09 2023-03-31 13F Marathon Petroleum COM 56585A102 180,149 -36,309 -16.77 24,289 -3.59 1.1262
2023-02-13 2022-12-31 13F Marathon Petroleum COM 56585A102 216,458 25,855 13.56 25,194 33.06 1.0196
2022-11-14 2022-09-30 13F Marathon Petroleum COM 56585A102 190,603 -12,212 -6.02 18,933 13.55 0.8258
2022-08-04 2022-06-30 13F Marathon Petroleum COM 56585A102 202,815 -38,621 -16.00 16,673 -19.23 0.6580
2022-05-05 2022-03-31 13F Marathon Petroleum COM 56585A102 241,436 -5,519 -2.23 20,643 30.63 0.5334
2022-02-04 2021-12-31 13F Marathon Petroleum COM 56585A102 246,955 -4,711 -1.87 15,803 1.59 0.3817
2021-11-09 2021-09-30 13F Marathon Petroleum COM 56585A102 251,666 -27,542 -9.86 15,555 -7.79 0.3852
2021-08-03 2021-06-30 13F Marathon Petroleum COM 56585A102 279,208 -3,357 -1.19 16,870 11.62 0.3742
2021-05-10 2021-03-31 13F Marathon Petroleum COM 56585A102 282,565 -10,743 -3.66 15,114 24.59 0.3561
2021-02-05 2020-12-31 13F Marathon Petroleum COM 56585A102 293,308 -9,825 -3.24 12,131 36.40 0.3132
2020-11-09 2020-09-30 13F Marathon Petroleum COM 56585A102 303,133 -10,336 -3.30 8,894 -24.09 0.2734
2020-08-05 2020-06-30 13F Marathon Petroleum COM 56585A102 313,469 -22,596 -6.72 11,717 47.61 0.3606
2020-05-15 2020-03-31 13F Marathon Petroleum COM 56585A102 336,065 -9,911 -2.86 7,938 -61.92 0.2773
2020-02-06 2019-12-31 13F Marathon Petroleum COM 56585A102 345,976 50,525 17.10 20,845 16.13 0.5061
2019-11-13 2019-09-30 13F Marathon Petroleum COM 56585A102 295,451 -14,565 -4.70 17,949 3.61 0.4652
2019-08-13 2019-06-30 13F Marathon Petroleum COM 56585A102 310,016 3,343 1.09 17,324 -5.61 0.4225
2019-05-08 2019-03-31 13F Marathon Petroleum COM 56585A102 306,673 57,599 23.13 18,354 24.87 0.4646
2019-02-11 2018-12-31 13F Marathon Petroleum COM 56585A102 249,074 249,074 14,698 0.4178
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.