Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionCresset Asset Management, LLC
Latest Disclosed Ownership12,691 shares
Latest Disclosed Value $ 3,098,909
Cresset Asset Management, LLC reports 6.26% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 15, 2026 - Cresset Asset Management, LLC filed a 13F-HR form disclosing ownership of 12,691 shares of Marathon Petroleum Corporation (MX:MPC) valued at $3,098,909 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,538 shares of Marathon Petroleum Corporation. This represents a change in shares of -6.26% 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)
2026-05-15 2026-03-31 13F MARATHON PETE COM 56585A102 12,691 -847 -6.26 3,099 40.75 0.0134
2026-02-17 2025-12-31 13F MARATHON PETE COM 56585A102 13,538 4,179 44.65 2,202 22.07 0.0093
2026-01-22 2025-09-30 13F/A-1 MARATHON PETE COM 56585A102 9,359 3,593 62.31 1,804 88.40 0.0079
2025-11-12 2025-09-30 13F MARATHON PETE COM 56585A102 11,011 5,245 2,122 0.0080
2026-01-22 2025-06-30 13F/A-1 MARATHON PETE COM 56585A102 5,766 -1,642 -22.17 958 -11.31 0.0048
2025-08-13 2025-06-30 13F MARATHON PETE COM 56585A102 6,817 -591 1,133 0.0049
2025-05-13 2025-03-31 13F MARATHON PETE COM 56585A102 7,408 -386 -4.95 1,079 -0.74 0.0054
2025-02-14 2024-12-31 13F MARATHON PETE COM 56585A102 7,794 -25,933 -76.89 1,087 -80.21 0.0052
2024-11-14 2024-09-30 13F MARATHON PETE COM 56585A102 33,727 -97 -0.29 5,494 -6.36 0.0211
2024-08-14 2024-06-30 13F MARATHON PETE COM 56585A102 33,824 8,291 32.47 5,868 14.03 0.0246
2024-05-15 2024-03-31 13F MARATHON PETE COM 56585A102 25,533 1,647 6.90 5,145 45.22 0.0248
2024-02-14 2023-12-31 13F MARATHON PETE COM 56585A102 23,886 232 0.98 3,544 -1.01 0.0212
2023-11-14 2023-09-30 13F MARATHON PETE COM 56585A102 23,654 1,230 5.49 3,580 36.92 0.0138
2023-08-14 2023-06-30 13F MARATHON PETE COM 56585A102 22,424 19,625 701.14 2,615 593.37 0.0032
2023-05-12 2023-03-31 13F MARATHON PETE COM 56585A102 2,799 232 9.04 377 47.84 0.0076
2023-02-14 2022-12-31 13F MARATHON PETE COM 56585A102 2,567 -1,419 -35.60 255 -35.44 0.0032
2022-11-14 2022-09-30 13F MARATHON PETE COM 56585A102 3,986 122 3.16 395 25.40 0.0050
2022-08-15 2022-06-30 13F MARATHON PETE COM 56585A102 3,864 -6,085 -61.16 315 -62.98 0.0039
2022-05-16 2022-03-31 13F MARATHON PETE COM 56585A102 9,949 1,170 13.33 851 51.42 0.0088
2022-02-10 2021-12-31 13F MARATHON PETE COM 56585A102 8,779 1,885 27.34 562 31.92 0.0054
2021-11-15 2021-09-30 13F MARATHON PETE COM 56585A102 6,894 1,355 24.46 426 27.54 0.0057
2021-08-10 2021-06-30 13F MARATHON PETE COM 56585A102 5,539 872 18.68 334 34.14 0.0047
2021-05-12 2021-03-31 13F MARATHON PETE COM 56585A102 4,667 4,667 249 0.0039
2020-05-15 2020-03-31 13F MARATHON PETE COM 56585A102 0 -3,871 -100.00 0 -100.00
2020-02-10 2019-12-31 13F MARATHON PETE COM 56585A102 3,871 3,871 233 0.0063
2019-08-20 2019-06-30 13F/A-1 MARATHON PETE COM 56585A102 0 -1,826 -100.00 0 -100.00
2019-05-15 2019-03-31 13F MARATHON PETE COM 56585A102 1,826 290 18.88 109 19.78 0.0042
2019-05-21 2018-12-31 13F/A-1 MARATHON PETE COM 56585A102 1,536 1,536 91 0.0054
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.