Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionIeq Capital, Llc
Latest Disclosed Ownership29,300 shares
Latest Disclosed Value $ 7,154,622
Ieq Capital, Llc reports 1,593.64% increase in ownership of MPC / Marathon Petroleum Corporation

On May 14, 2026 - Ieq Capital, Llc filed a 13F-HR form disclosing ownership of 29,300 shares of Marathon Petroleum Corporation (MX:MPC) valued at $7,154,622 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,730 shares of Marathon Petroleum Corporation. This represents a change in shares of 1,593.64% 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)
2026-05-14 2026-03-31 13F MARATHON PETE COM 56585A102 29,300 27,570 1,593.64 7,155 2,445.91 0.0241
2026-02-13 2025-12-31 13F MARATHON PETE COM 56585A102 1,730 -22,239 -92.78 281 -93.92 0.0008
2025-11-14 2025-09-30 13F MARATHON PETE COM 56585A102 23,969 -13,621 -36.24 4,620 -26.02 0.0140
2025-08-14 2025-06-30 13F MARATHON PETE COM 56585A102 37,590 -18,650 -33.16 6,244 -23.79 0.0382
2025-05-14 2025-03-31 13F MARATHON PETE COM 56585A102 56,240 1,909 3.51 8,194 8.10 0.0652
2025-02-03 2024-12-31 13F MARATHON PETE COM 56585A102 54,331 31,463 137.59 7,579 103.46 0.0732
2024-11-14 2024-09-30 13F MARATHON PETE COM 56585A102 22,868 2,319 11.29 3,725 4.52 0.0457
2024-08-12 2024-06-30 13F MARATHON PETE COM 56585A102 20,549 2,039 11.02 3,565 -4.42 0.0480
2024-05-09 2024-03-31 13F MARATHON PETE COM 56585A102 18,510 1,152 6.64 3,730 44.82 0.0536
2024-02-07 2023-12-31 13F MARATHON PETE COM 56585A102 17,358 2,663 18.12 2,575 15.83 0.0428
2023-11-06 2023-09-30 13F MARATHON PETE COM 56585A102 14,695 -137 -0.92 2,224 28.57 0.0452
2023-08-08 2023-06-30 13F MARATHON PETE COM 56585A102 14,832 503 3.51 1,729 -10.51 0.0349
2023-05-02 2023-03-31 13F MARATHON PETE COM 56585A102 14,329 -1,937 -11.91 1,932 2.06 0.0448
2023-02-06 2022-12-31 13F MARATHON PETE COM 56585A102 16,266 -61 -0.37 1,893 16.71 0.0530
2022-11-04 2022-09-30 13F MARATHON PETE COM 56585A102 16,327 5,541 51.37 1,622 82.86 0.0445
2022-07-27 2022-06-30 13F MARATHON PETE COM 56585A102 10,786 -34 -0.31 887 -4.11 0.0269
2022-04-26 2022-03-31 13F MARATHON PETE COM 56585A102 10,820 1,904 21.35 925 62.00 0.0220
2022-01-31 2021-12-31 13F MARATHON PETE COM 56585A102 8,916 427 5.03 571 8.76 0.0132
2021-11-09 2021-09-30 13F MARATHON PETE COM 56585A102 8,489 3,288 63.22 525 67.20 0.0139
2021-07-29 2021-06-30 13F MARATHON PETE COM 56585A102 5,201 1,299 33.29 314 50.24 0.0092
2021-05-04 2021-03-31 13F MARATHON PETE COM 56585A102 3,902 3,902 209 0.0086
2020-05-07 2020-03-31 13F MARATHON PETE COM 56585A102 0 -7,385 -100.00 0 -100.00
2020-02-11 2019-12-31 13F/A-1 MARATHON PETE COM 56585A102 7,385 7,385 446 0.0391
2020-02-04 2019-12-31 13F MARATHON PETE COM 56585A102 8,289 405
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.