Marathon Petroleum Corporation
US ˙ NYSE ˙ US56585A1025

SecurityMPC / Marathon Petroleum Corporation
InstitutionOne Wealth Advisors, LLC
Latest Disclosed Ownership2,453 shares
Latest Disclosed Value $ 598,974
One Wealth Advisors, LLC ownership in MPC / Marathon Petroleum Corporation

On April 21, 2026 - One Wealth Advisors, LLC filed a 13F-HR form disclosing ownership of 2,453 shares of Marathon Petroleum Corporation (US:MPC) valued at $598,974 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 2,453 shares of Marathon Petroleum Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $655,466 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)
2026-04-21 2026-03-31 13F MARATHON PETE COM 56585A102 2,453 0 0.00 599 50.25 0.0746
2026-02-02 2025-12-31 13F MARATHON PETE COM 56585A102 2,453 19 0.78 399 -15.14 0.0487
2025-11-03 2025-09-30 13F MARATHON PETE COM 56585A102 2,434 -809 -24.95 469 -12.83 0.0589
2025-07-17 2025-06-30 13F MARATHON PETE COM 56585A102 3,243 22 0.68 539 14.71 0.0749
2025-05-06 2025-03-31 13F MARATHON PETE COM 56585A102 3,221 -1,145 -26.23 469 -22.99 0.0700
2025-01-24 2024-12-31 13F MARATHON PETE COM 56585A102 4,366 -631 -12.63 609 -25.18 0.0904
2024-10-16 2024-09-30 13F MARATHON PETE COM 56585A102 4,997 -36 -0.72 814 -7.92 0.1249
2024-08-13 2024-06-30 13F MARATHON PETE COM 56585A102 5,033 -386 -7.12 885 -18.97 0.1896
2024-04-15 2024-03-31 13F MARATHON PETE COM 56585A102 5,419 725 15.45 1,092 56.75 0.1900
2024-02-13 2023-12-31 13F MARATHON PETE COM 56585A102 4,694 -145 -3.00 696 -4.92 0.1341
2023-11-01 2023-09-30 13F MARATHON PETE COM 56585A102 4,839 44 0.92 732 30.95 0.1628
2023-08-14 2023-06-30 13F MARATHON PETE COM 56585A102 4,795 -209 -4.18 559 -17.06 0.1178
2023-05-15 2023-03-31 13F MARATHON PETE COM 56585A102 5,004 422 9.21 675 26.45 0.1559
2023-02-14 2022-12-31 13F Marathon Petroleum Common Stock 56585A102 4,582 -1,319 -22.35 533 -9.04 0.1218
2022-11-14 2022-09-30 13F Marathon Petroleum Common Stock 56585A102 5,901 -173 -2.85 586 17.43 0.1918
2022-08-15 2022-06-30 13F Marathon Petroleum Common Stock 56585A102 6,074 -69 -1.12 499 -4.95 0.1336
2022-05-16 2022-03-31 13F Marathon Petroleum Common Stock 56585A102 6,143 84 1.39 525 35.31 0.1285
2022-02-14 2021-12-31 13F Marathon Petroleum Common Stock 56585A102 6,059 29 0.48 388 4.02 0.0984
2021-11-15 2021-09-30 13F Marathon Petroleum Common Stock 56585A102 6,030 6,030 373 0.1094
2019-08-14 2019-06-30 13F Marathon Petroleum Common Stock 56585A102 0 -3,305 -100.00 0 -100.00
2019-05-15 2019-03-31 13F Marathon Petroleum Common Stock 56585A102 3,305 3,305 198 0.1617
2019-02-15 2018-12-31 13F Marathon Petroleum Common Stock 56585A102 0 -8,489 -100.00 0 -100.00
2018-11-14 2018-09-30 13F Marathon Petroleum Common Stock 56585A102 8,489 -310 -3.52 679 10.05 0.5196
2018-08-14 2018-06-30 13F Marathon Petroleum Common Stock 56585A102 8,799 -691 -7.28 617 -11.10 0.4927
2018-05-15 2018-03-31 13F Marathon Petroleum Corp Total Common Stock 56585A102 9,490 -855 -8.26 694 1.61 0.6122
2018-02-14 2017-12-31 13F Marathon Petroleum Common Stock 56585A102 10,345 10,345 683 0.5550
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.