Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionHaverford Trust Co
Latest Disclosed Ownership1,226 shares
Latest Disclosed Value $ 299,365
Haverford Trust Co ownership in MPC / Marathon Petroleum Corporation

On May 11, 2026 - Haverford Trust Co filed a 13F-HR form disclosing ownership of 1,226 shares of Marathon Petroleum Corporation (MX:MPC) valued at $299,365 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 0 shares of Marathon Petroleum Corporation.

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 MARATHON PETE COM 56585A102 1,226 1,226 299 0.0027
2026-02-13 2025-12-31 13F MARATHON PETE COM 56585A102 0 -1,522 -100.00 0 -100.00
2025-11-14 2025-09-30 13F MARATHON PETE COM 56585A102 1,522 290 23.54 293 43.63 0.0026
2025-08-13 2025-06-30 13F MARATHON PETE COM 56585A102 1,232 1,232 205 0.0019
2025-02-11 2024-12-31 13F MARATHON PETROLEUM COM 56585A102 0 -6,279 -100.00 0 -100.00
2024-11-05 2024-09-30 13F MARATHON PETROLEUM COM 56585A102 6,279 391 6.64 1,023 0.10 0.0100
2024-08-13 2024-06-30 13F MARATHON PETROLEUM COM 56585A102 5,888 85 1.46 1,021 -12.66 0.0108
2024-05-02 2024-03-31 13F MARATHON PETROLEUM COM 56585A102 5,803 0 0.00 1,169 35.93 0.0122
2024-02-08 2023-12-31 13F MARATHON PETROLEUM COM 56585A102 5,803 281 5.09 861 2.99 0.0096
2023-11-09 2023-09-30 13F MARATHON PETROLEUM COM 56585A102 5,522 51 0.93 836 31.08 0.0102
2023-08-08 2023-06-30 13F MARATHON PETROLEUM COM 56585A102 5,471 50 0.92 638 -12.74 0.0072
2023-05-12 2023-03-31 13F MARATHON PETROLEUM COM 56585A102 5,421 423 8.46 731 25.65 0.0087
2023-02-13 2022-12-31 13F MARATHON PETROLEUM COM 56585A102 4,998 0 0.00 582 17.14 0.0072
2022-11-14 2022-09-30 13F MARATHON PETROLEUM COM 56585A102 4,998 -1 -0.02 496 20.68 0.0068
2022-08-12 2022-06-30 13F MARATHON PETROLEUM COM 56585A102 4,999 0 0.00 411 -3.75 0.0054
2022-05-05 2022-03-31 13F MARATHON PETROLEUM COM 56585A102 4,999 -2,020 -28.78 427 -4.90 0.0049
2022-02-14 2021-12-31 13F MARATHON PETROLEUM COM 56585A102 7,019 1 0.01 449 3.46 0.0049
2021-11-12 2021-09-30 13F MARATHON PETROLEUM COM 56585A102 7,018 1,974 39.14 434 42.30 0.0052
2021-08-16 2021-06-30 13F/A-1 MARATHON PETROLEUM COM 56585A102 5,044 46 0.92 305 14.23 0.0036
2021-08-16 2021-06-30 13F MARATHON PETROLEUM COM 56585A102 305 -4,693 305 0.0036
2021-05-12 2021-03-31 13F MARATHON PETROLEUM COM 56585A102 4,998 0 0.00 267 28.99 0.0034
2021-02-05 2020-12-31 13F MARATHON PETE COM 56585A102 4,998 4,998 0.00 207 -22.47 0.0029
2020-05-11 2020-03-31 13F MARATHON PETROLEUM COM 56585A102 0 -4,998 -100.00 0 -100.00
2020-02-10 2019-12-31 13F MARATHON PETROLEUM COM 56585A102 4,998 0 0.00 301 -0.99 0.0049
2019-11-04 2019-09-30 13F MARATHON PETROLEUM COM 56585A102 4,998 0 0.00 304 8.96 0.0053
2019-08-13 2019-06-30 13F MARATHON PETROLEUM COM 56585A102 4,998 0 0.00 279 -6.69 0.0050
2019-05-09 2019-03-31 13F MARATHON PETROLEUM COM 56585A102 4,998 0 0.00 299 1.36 0.0055
2019-02-12 2018-12-31 13F MARATHON PETROLEUM COM 56585A102 4,998 0 0.00 295 -26.25 0.0063
2018-11-08 2018-09-30 13F MARATHON PETROLEUM COM 56585A102 4,998 0 0.00 400 13.96 0.0074
2018-08-10 2018-06-30 13F MARATHON PETROLEUM COM 56585A102 4,998 0 0.00 351 -3.84 0.0069
2018-05-09 2018-03-31 13F MARATHON PETROLEUM COM 56585A102 4,998 0 0.00 365 10.61 0.0073
2018-02-13 2017-12-31 13F MARATHON PETROLEUM COM 56585A102 4,998 0 0.00 330 17.86 0.0065
2017-11-09 2017-09-30 13F MARATHON PETROLEUM COM 56585A102 4,998 0 0.00 280 6.87 0.0058
2017-08-14 2017-06-30 13F MARATHON PETROLEUM COM 56585A102 4,998 -12 -0.24 262 3.56 0.0057
2017-05-05 2017-03-31 13F MARATHON PETROLEUM COM 56585A102 5,010 12 0.24 253 0.40 0.0058
2017-02-10 2016-12-31 13F MARATHON PETROLEUM COM 56585A102 4,998 0 0.00 252 24.14 0.0061
2016-11-14 2016-09-30 13F MARATHON PETROLEUM COM 56585A102 4,998 -2,054 -29.13 203 -24.25 0.0051
2016-08-04 2016-06-30 13F MARATHON PETROLEUM COM 56585A102 7,052 0 0.00 268 2.29 0.0067
2016-05-10 2016-03-31 13F MARATHON PETROLEUM COM 56585A102 7,052 -200 -2.76 262 -30.32 0.0068
2016-02-09 2015-12-31 13F MARATHON PETROLEUM COM 56585A102 7,252 0 0.00 376 11.90 0.0101
2015-11-10 2015-09-30 13F MARATHON PETROLEUM COM 56585A102 7,252 0 0.00 336 -11.35 0.0098
2015-07-30 2015-06-30 13F MARATHON PETROLEUM COM 56585A102 7,252 3,314 84.15 379 -5.96 0.0104
2015-05-05 2015-03-31 13F/A-1 MARATHON PETROLEUM COM 56585A102 3,938 -40 -1.01 403 12.26 0.0111
2015-05-04 2015-03-31 13F MARATHON PETROLEUM COM 56585A102 45,649 403
2015-02-09 2014-12-31 13F MARATHON PETROLEUM COM 56585A102 3,978 40 1.02 359 7.81 0.0101
2014-11-05 2014-09-30 13F MARATHON PETROLEUM COM 56585A102 3,938 0 0.00 333 8.47 0.0099
2014-08-01 2014-06-30 13F MARATHON PETROLEUM COM 56585A102 3,938 0 0.00 307 -10.50 0.0090
2014-05-08 2014-03-31 13F MARATHON PETROLEUM COM 56585A102 3,938 0 0.00 343 -4.99 0.0106
2014-01-31 2013-12-31 13F MARATHON PETROLEUM Common Stocks 56585A102 3,938 100 2.61 361 46.15 0.0101
2013-11-01 2013-09-30 13F MARATHON PETROLEUM Common Stocks 56585A102 3,838 0 0.00 247 -9.52 0.0090
2013-07-31 2013-06-30 13F MARATHON PETROLEUM Common Stocks 56585A102 3,838 3,838 273 0.0090
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.