Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionPeterson Wealth Services
Latest Disclosed Ownership18,430 shares
Latest Disclosed Value $ 4,500,171
Peterson Wealth Services reports 2.57% decrease in ownership of MPC / Marathon Petroleum Corporation

On April 30, 2026 - Peterson Wealth Services filed a 13F-HR form disclosing ownership of 18,430 shares of Marathon Petroleum Corporation (MX:MPC) valued at $4,500,171 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 18,917 shares of Marathon Petroleum Corporation. This represents a change in shares of -2.57% 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)
2026-04-30 2026-03-31 13F MARATHON PETE COM 56585A102 18,430 -487 -2.57 4,500 46.29 1.1119
2026-02-12 2025-12-31 13F MARATHON PETE COM 56585A102 18,917 -41,827 -68.86 3,077 -17.31 0.7867
2025-11-04 2025-09-30 13F MARATHON PETE COM 56585A102 60,744 41,327 212.84 3,720 15.35 0.9180
2025-07-31 2025-06-30 13F MARATHON PETE COM 56585A102 19,417 442 2.33 3,225 16.68 0.8836
2025-05-05 2025-03-31 13F MARATHON PETE COM 56585A102 18,975 1,458 8.32 2,764 13.14 0.8564
2025-01-29 2024-12-31 13F MARATHON PETE COM 56585A102 17,517 887 5.33 2,444 -9.82 0.7336
2024-11-07 2024-09-30 13F MARATHON PETE COM 56585A102 16,630 1,614 10.75 2,709 4.03 0.8653
2024-07-30 2024-06-30 13F MARATHON PETE COM 56585A102 15,016 347 2.37 2,605 -11.88 0.9104
2024-05-01 2024-03-31 13F MARATHON PETE COM 56585A102 14,669 674 4.82 2,956 42.34 1.0764
2024-01-31 2023-12-31 13F MARATHON PETE COM 56585A102 13,995 3,176 29.36 2,076 26.82 0.8902
2023-11-14 2023-09-30 13F MARATHON PETE COM 56585A102 10,819 126 1.18 1,637 31.38 1.2250
2023-07-13 2023-06-30 13F MARATHON PETE COM 56585A102 10,693 -334 -3.03 1,247 -16.15 0.5986
2023-04-06 2023-03-31 13F MARATHON PETE COM 56585A102 11,027 1,531 16.12 1,487 34.48 0.7651
2023-01-20 2022-12-31 13F MARATHON PETE COM 56585A102 9,496 767 8.79 1,105 27.45 0.6330
2022-11-09 2022-09-30 13F MARATHON PETE COM 56585A102 8,729 1,206 16.03 867 40.29 0.6147
2022-07-11 2022-06-30 13F MARATHON PETE COM 56585A102 7,523 931 14.12 618 9.57 0.4454
2022-04-18 2022-03-31 13F MARATHON PETE COM 56585A102 6,592 155 2.41 564 36.89 0.3467
2022-01-31 2021-12-31 13F MARATHON PETE COM 56585A102 6,437 6,437 412 0.2733
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.