Marathon Petroleum Corporation
US ˙ NYSE ˙ US56585A1025

SecurityMPC / Marathon Petroleum Corporation
InstitutionIntrust Bank Na
Latest Disclosed Ownership5,603 shares
Latest Disclosed Value $ 1,368,139
Intrust Bank Na reports 1.81% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 6, 2026 - Intrust Bank Na filed a 13F-HR form disclosing ownership of 5,603 shares of Marathon Petroleum Corporation (US:MPC) valued at $1,368,141 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 5,706 shares of Marathon Petroleum Corporation. This represents a change in shares of -1.81% during the quarter. The current value of the position is $1,497,178 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)
2026-05-06 2026-03-31 13F MARATHON PETE COM 56585A102 5,603 -103 -1.81 1,368 47.57 0.1115
2026-02-06 2025-12-31 13F MARATHON PETE COM 56585A102 5,706 -65 -1.13 928 -16.64 0.0769
2025-11-10 2025-09-30 13F MARATHON PETE COM 56585A102 5,771 -25 -0.43 1,112 15.59 0.0925
2025-08-11 2025-06-30 13F MARATHON PETE COM 56585A102 5,796 258 4.66 963 19.35 0.0853
2025-05-09 2025-03-31 13F MARATHON PETE COM 56585A102 5,538 -76 -1.35 807 2.94 0.0798
2025-02-12 2024-12-31 13F MARATHON PETE COM 56585A102 5,614 -101 -1.77 783 -15.90 0.0794
2024-11-12 2024-09-30 13F MARATHON PETE COM 56585A102 5,715 -155 -2.64 931 -8.55 0.0931
2024-08-08 2024-06-30 13F MARATHON PETE COM 56585A102 5,870 174 3.05 1,018 -11.25 0.1083
2024-05-09 2024-03-31 13F MARATHON PETE COM 56585A102 5,696 -90 -1.56 1,148 33.68 0.1230
2024-02-05 2023-12-31 13F MARATHON PETE COM 56585A102 5,786 98 1.72 858 -0.23 0.0996
2023-11-13 2023-09-30 13F MARATHON PETE COM 56585A102 5,688 85 1.52 861 31.70 0.1098
2023-08-10 2023-06-30 13F MARATHON PETE COM 56585A102 5,603 -46 -0.81 653 -14.19 0.0792
2023-05-04 2023-03-31 13F MARATHON PETE COM 56585A102 5,649 11 0.20 762 16.01 0.0975
2023-02-10 2022-12-31 13F MARATHON PETE COM 56585A102 5,638 -335 -5.61 656 10.62 0.0910
2022-11-09 2022-09-30 13F MARATHON PETE COM 56585A102 5,973 67 1.13 593 22.02 0.0914
2022-08-16 2022-06-30 13F MARATHON PETE COM 56585A102 5,906 5,715 2,992.15 486 2,937.50 0.0702
2022-05-10 2022-03-31 13F MARATHON PETE COM 56585A102 191 -5,389 -96.58 16 -95.52 0.0014
2022-05-10 2022-03-31 13F MARATHON PETE COM 56585A102 5,742 491
2022-02-03 2021-12-31 13F MARATHON PETE COM 56585A102 5,580 -18 -0.32 357 3.18 0.0430
2021-11-04 2021-09-30 13F MARATHON PETE COM 56585A102 5,598 -37 -0.66 346 1.47 0.0458
2021-08-05 2021-06-30 13F MARATHON PETE COM 56585A102 5,635 -369 -6.15 341 6.23 0.0460
2021-06-02 2021-03-31 13F MARATHON PETE COM 56585A102 6,004 -20 -0.33 321 28.92 0.0462
2021-02-10 2020-12-31 13F MARATHON PETE COM 56585A102 6,024 6,024 249 0.0377
2020-11-05 2020-09-30 13F MARATHON PETE COM 56585A102 0 -8,377 -100.00 0 -100.00
2020-08-05 2020-06-30 13F MARATHON PETE COM 56585A102 8,377 8,377 313 0.0622
2020-05-06 2020-03-31 13F MARATHON PETE COM 56585A102 0 -10,770 -100.00 0 -100.00
2020-02-07 2019-12-31 13F MARATHON PETE COM 56585A102 10,770 1,090 11.26 649 10.37 0.1480
2019-11-12 2019-09-30 13F MARATHON PETE COM 56585A102 9,680 -720 -6.92 588 1.20 0.1472
2019-08-12 2019-06-30 13F MARATHON PETE COM 56585A102 10,400 -2,055 -16.50 581 -22.12 0.1415
2019-05-10 2019-03-31 13F MARATHON PETE COM 56585A102 12,455 685 5.82 746 7.34 0.1900
2019-02-06 2018-12-31 13F MARATHON PETE COM 56585A102 11,770 -1,132 -8.77 695 -32.59 0.2018
2018-11-09 2018-09-30 13F MARATHON PETE COM 56585A102 12,902 -441 -3.31 1,031 10.15 0.2617
2018-08-08 2018-06-30 13F MARATHON PETE COM 56585A102 13,343 336 2.58 936 -1.47 0.2590
2018-05-03 2018-03-31 13F MARATHON PETE COM 56585A102 13,007 407 3.23 950 14.32 0.2739
2018-02-08 2017-12-31 13F MARATHON PETE COM 56585A102 12,600 259 2.10 831 20.09 0.2476
2017-11-06 2017-09-30 13F MARATHON PETE COM 56585A102 12,341 0 0.00 692 7.12 0.2262
2017-08-07 2017-06-30 13F MARATHON PETE COM 56585A102 12,341 3,651 42.01 646 47.15 0.2202
2017-05-04 2017-03-31 13F MARATHON PETE COM 56585A102 8,690 1,214 16.24 439 16.45 0.1552
2017-02-08 2016-12-31 13F MARATHON PETE COM 56585A102 7,476 1,052 16.38 377 44.44 0.1429
2016-11-07 2016-09-30 13F MARATHON PETE COM 56585A102 6,424 591 10.13 261 18.10 0.1040
2016-08-03 2016-06-30 13F MARATHON PETE COM 56585A102 5,833 5,833 221 0.0892
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.