Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionHenshaw Capital LLC
Latest Disclosed Ownership78,589 shares
Latest Disclosed Value $ 19,189,932
Henshaw Capital LLC ownership in MPC / Marathon Petroleum Corporation

On May 28, 2026 - Henshaw Capital LLC filed a 13F-HR form disclosing ownership of 78,589 shares of Marathon Petroleum Corporation (MX:MPC) valued at $19,189,932 USD as of March 31, 2026. The entity filed a previous 13F-HR on May 28, 2026 disclosing 78,589 shares of Marathon Petroleum Corporation. This represents a change in shares of 0.00% 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)
2026-05-28 2026-03-31 13F MARATHON PETE COM 56585A102 78,589 0 0.00 19,190 50.15 0.7114
2026-05-28 2025-12-31 13F MARATHON PETE COM 56585A102 78,589 0 0.00 12,781 -15.63 0.4595
2026-05-28 2025-09-30 13F MARATHON PETE COM 56585A102 78,589 0 0.00 15,147 16.03 0.5646
2026-05-28 2025-06-30 13F MARATHON PETE COM 56585A102 78,589 0 0.00 13,054 14.02 0.5175
2026-05-28 2025-03-31 13F MARATHON PETE COM 56585A102 78,589 0 0.00 11,450 4.43 0.5042
2026-05-28 2024-12-31 13F MARATHON PETE COM 56585A102 78,589 0 0.00 10,963 -14.36 0.4566
2026-05-28 2024-09-30 13F MARATHON PETE COM 56585A102 78,589 0 0.00 12,803 -6.10 0.5364
2026-05-28 2024-06-30 13F MARATHON PETE COM 56585A102 78,589 0 0.00 13,634 -13.91 0.6153
2026-05-28 2024-03-31 13F MARATHON PETE COM 56585A102 78,589 0 0.00 15,836 35.82 0.7413
2026-05-28 2023-12-31 13F MARATHON PETE COM 56585A102 78,589 0 0.00 11,660 -1.97 0.6057
2026-05-28 2023-09-30 13F MARATHON PETE COM 56585A102 78,589 0 0.00 11,894 29.79 0.6880
2026-05-28 2023-06-30 13F MARATHON PETE COM 56585A102 78,589 0 0.00 9,164 -13.52 0.5260
2026-05-28 2023-03-31 13F MARATHON PETE COM 56585A102 78,589 0 0.00 10,596 15.84 0.6528
2026-05-28 2022-12-31 13F MARATHON PETE COM 56585A102 78,589 0 0.00 9,147 17.18 0.6084
2026-05-28 2022-09-30 13F MARATHON PETE COM 56585A102 78,589 0 0.00 7,806 20.84 0.5767
2026-05-28 2022-06-30 13F MARATHON PETE COM 56585A102 78,589 0 0.00 6,461 -3.85 0.4477
2026-05-28 2022-03-31 13F MARATHON PETE COM 56585A102 78,589 0 0.00 6,719 33.63 0.3931
2026-05-28 2021-12-31 13F MARATHON PETE COM 56585A102 78,589 0 0.00 5,029 3.52 0.2812
2026-05-28 2021-09-30 13F MARATHON PETE COM 56585A102 78,589 0 0.00 4,858 2.30 0.3036
2026-05-28 2021-06-30 13F MARATHON PETE COM 56585A102 78,589 0 0.00 4,748 12.97 0.2988
2026-05-28 2021-03-31 13F MARATHON PETE COM 56585A102 78,589 0 0.00 4,204 29.32 0.2812
2026-05-28 2020-12-31 13F MARATHON PETE COM 56585A102 78,589 0 0.00 3,250 41.00 0.2448
2026-05-28 2020-09-30 13F MARATHON PETE COM 56585A102 78,589 0 0.00 2,306 -21.52 0.1785
2026-05-28 2020-06-30 13F MARATHON PETE COM 56585A102 78,589 0 0.00 2,938 58.24 0.2487
2026-05-28 2020-03-31 13F MARATHON PETE COM 56585A102 78,589 -29,000 -26.95 1,856 -71.37 0.1863
2026-05-28 2019-12-31 13F MARATHON PETE COM 56585A102 107,589 36,000 50.29 6,482 49.05 0.5093
2026-05-28 2019-09-30 13F MARATHON PETE COM 56585A102 71,589 0 0.00 4,349 8.73 0.3681
2026-05-28 2019-06-30 13F MARATHON PETE COM 56585A102 71,589 0 0.00 4,000 -6.63 0.3403
2026-05-28 2019-03-31 13F MARATHON PETE COM 56585A102 71,589 0 0.00 4,285 1.42 0.3749
2026-05-28 2018-12-31 13F MARATHON PETE COM 56585A102 71,589 0 0.00 4,224 -26.21 0.4153
2026-05-28 2018-09-30 13F MARATHON PETE COM 56585A102 71,589 0 0.00 5,725 13.98 0.4819
2026-05-28 2018-06-30 13F MARATHON PETE COM 56585A102 71,589 0 0.00 5,023 -4.03 0.4560
2026-05-28 2018-03-31 13F MARATHON PETE COM 56585A102 71,589 0 0.00 5,234 10.80 0.4880
2026-05-28 2017-12-31 13F MARATHON PETE COM 56585A102 71,589 0 0.00 4,723 17.66 0.4508
2026-05-28 2017-09-30 13F MARATHON PETE COM 56585A102 71,589 527 0.74 4,015 7.96 0.4111
2026-05-28 2017-06-30 13F MARATHON PETE COM 56585A102 71,062 0 0.00 3,719 3.54 0.3892
2026-05-28 2017-03-31 13F MARATHON PETE COM 56585A102 71,062 0 0.00 3,591 0.39 0.3928
2026-05-28 2016-12-31 13F MARATHON PETE COM 56585A102 71,062 0 0.00 3,578 24.03 0.4226
2026-05-28 2016-09-30 13F MARATHON PETE COM 56585A102 71,062 0 0.00 2,884 6.93 0.3560
2026-05-28 2016-06-30 13F MARATHON PETE COM 56585A102 71,062 0 0.00 2,698 2.08 0.3512
2026-05-28 2016-03-31 13F MARATHON PETE COM 56585A102 71,062 71,062 2,642 0.3508
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.