Marathon Petroleum Corporation
US ˙ NYSE ˙ US56585A1025

SecurityMPC / Marathon Petroleum Corporation
InstitutionSalomon & Ludwin, LLC
Latest Disclosed Ownership450 shares
Latest Disclosed Value $ 108,779
Salomon & Ludwin, LLC reports 12.96% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 11, 2026 - Salomon & Ludwin, LLC filed a 13F-HR form disclosing ownership of 450 shares of Marathon Petroleum Corporation (US:MPC) valued at $109,881 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 517 shares of Marathon Petroleum Corporation. This represents a change in shares of -12.96% during the quarter. The current value of the position is $120,244 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)
2026-05-11 2026-03-31 13F MARATHON PETE COM 56585A102 450 -67 -12.96 109 20.00 0.0097
2026-01-28 2025-12-31 13F MARATHON PETE COM 56585A102 517 66 14.63 90 3.45 0.0080
2025-10-21 2025-09-30 13F MARATHON PETE COM 56585A102 451 -516 -53.36 87 -48.21 0.0078
2025-07-29 2025-06-30 13F MARATHON PETE COM 56585A102 967 253 35.43 169 61.54 0.0167
2025-04-28 2025-03-31 13F MARATHON PETE COM 56585A102 714 500 233.64 104 258.62 0.0111
2025-01-30 2024-12-31 13F MARATHON PETE COM 56585A102 214 0 0.00 30 -14.71 0.0032
2024-10-24 2024-09-30 13F MARATHON PETE COM 56585A102 214 0 0.00 35 -8.11 0.0036
2024-07-25 2024-06-30 13F MARATHON PETE COM 56585A102 214 -5,682 -96.37 37 -96.89 0.0041
2024-05-02 2024-03-31 13F MARATHON PETE COM 56585A102 5,896 377 6.83 1,188 42.28 0.1022
2024-02-07 2023-12-31 13F MARATHON PETE COM 56585A102 5,519 0 0.00 835 0.00 0.0872
2023-11-14 2023-09-30 13F MARATHON PETE COM 56585A102 5,519 0 0.00 835 29.86 0.0872
2023-07-24 2023-06-30 13F MARATHON PETE CORP COM Stock 56585A102 5,519 4 0.07 644 -13.46 0.0685
2023-04-28 2023-03-31 13F MARATHON PETE CORP COM Stock 56585A102 5,515 0 0.00 744 15.91 0.0887
2023-02-08 2022-12-31 13F MARATHON PETE CORP COM Stock 56585A102 5,515 637 13.06 642 32.16 0.0814
2022-11-03 2022-09-30 13F MARATHON PETE CORP COM Stock 56585A102 4,878 0 0.00 485 20.95 0.0727
2022-08-03 2022-06-30 13F MARATHON PETE CORP COM Stock 56585A102 4,878 -81 -1.63 401 -5.42 0.0620
2022-05-06 2022-03-31 13F MARATHON PETE CORP COM Stock 56585A102 4,959 81 1.66 424 35.90 0.0615
2022-02-04 2021-12-31 13F MARATHON PETE CORP COM Stock 56585A102 4,878 0 0.00 312 3.31 0.0442
2021-11-01 2021-09-30 13F MARATHON PETE CORP COM Stock 56585A102 4,878 4,878 302 0.0470
2020-07-17 2020-06-30 13F MARATHON PETE CORP COM Stock 56585A102 0 -214 -100.00 0 -100.00
2020-04-03 2020-03-31 13F MARATHON PETE CORP COM Stock 56585A102 214 0 0.00 5 -61.54 0.0013
2020-02-07 2019-12-31 13F MARATHON PETE CORP COM Stock 56585A102 214 0 0.00 13 0.00 0.0026
2019-11-06 2019-09-30 13F MARATHON PETE CORP COM Stock 56585A102 214 0 0.00 13 8.33 0.0026
2019-08-20 2019-06-30 13F MARATHON PETE CORP COM Stock 56585A102 214 0 0.00 12 -7.69 0.0024
2019-05-14 2019-03-31 13F MARATHON PETE CORP COM Stock 56585A102 214 0 0.00 13 0.00 0.0027
2019-02-13 2018-12-31 13F MARATHON PETE CORP COM Stock 56585A102 214 214 13 0.0030
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.