Marathon Petroleum Corporation
US ˙ NYSE ˙ US56585A1025

SecurityMPC / Marathon Petroleum Corporation
InstitutionHunter Associates Investment Management Llc
Latest Disclosed Ownership3,220 shares
Latest Disclosed Value $ 786
Hunter Associates Investment Management Llc reports 1.58% increase in ownership of MPC / Marathon Petroleum Corporation

On April 27, 2026 - Hunter Associates Investment Management Llc filed a 13F-HR form disclosing ownership of 3,220 shares of Marathon Petroleum Corporation (US:MPC) valued at $786,260 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 3,170 shares of Marathon Petroleum Corporation. The current value of the position is $860,416 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)
2026-04-27 2026-03-31 13F MARATHON PETE CORP COM COM 56585A102 3,220 50 1.58 1 0.1040
2026-01-21 2025-12-31 13F MARATHON PETE CORP COM COM 56585A102 3,170 -30 -0.94 1 0.0690
2025-10-30 2025-09-30 13F MARATHON PETE CORP COM COM 56585A102 3,200 400 14.29 1 0.0859
2025-08-05 2025-06-30 13F MARATHON PETE CORP COM COM 56585A102 2,800 0 0.00 0 0.0691
2025-04-30 2025-03-31 13F MARATHON PETE CORP COM COM 56585A102 2,800 0 0.00 0 0.0628
2025-01-23 2024-12-31 13F MARATHON PETE CORP COM COM 56585A102 2,800 -205 -6.82 0 0.0595
2024-10-24 2024-09-30 13F MARATHON PETE CORP COM COM 56585A102 3,005 287 10.56 0 0.0760
2024-08-01 2024-06-30 13F MARATHON PETE CORP COM COM 56585A102 2,718 185 7.30 0 0.0792
2024-05-01 2024-03-31 13F MARATHON PETE CORP COM COM 56585A102 2,533 0 0.00 1 0.0858
2024-01-31 2023-12-31 13F MARATHON PETE CORP COM COM 56585A102 2,533 0 0.00 0 0.0688
2023-11-09 2023-09-30 13F MARATHON PETE CORP COM COM 56585A102 2,533 -45 -1.75 0 0.0778
2023-08-03 2023-06-30 13F MARATHON PETE CORP COM COM 56585A102 2,578 0 0.00 0 0.0586
2023-05-02 2023-03-31 13F MARATHON PETE CORP COM COM 56585A102 2,578 -700 -21.35 0 0.0743
2023-02-01 2022-12-31 13F MARATHON PETE CORP COM COM 56585A102 3,278 250 8.26 0 -100.00 0.0913
2022-11-02 2022-09-30 13F MARATHON PETE CORP COM COM 56585A102 3,028 0 0.00 300 21.46 0.0777
2022-08-10 2022-06-30 13F MARATHON PETE CORP COM COM 56585A102 3,028 3,028 247 0.0610
2020-08-13 2020-06-30 13F MARATHON PETE CORP COM COM 56585A102 0 -8,653 -100.00 0 -100.00
2020-05-11 2020-03-31 13F MARATHON PETE CORP COM COM 56585A102 8,653 -5,025 -36.74 204 -75.24 0.0791
2020-02-07 2019-12-31 13F MARATHON PETE CORP COM COM 56585A102 13,678 400 3.01 824 2.11 0.2558
2019-11-08 2019-09-30 13F MARATHON PETE CORP COM COM 56585A102 13,278 0 0.00 807 8.76 0.2774
2019-08-08 2019-06-30 13F MARATHON PETE CORP COM COM 56585A102 13,278 1,700 14.68 742 7.07 0.2553
2019-05-10 2019-03-31 13F MARATHON PETE CORP COM COM 56585A102 11,578 925 8.68 693 10.17 0.2426
2019-02-11 2018-12-31 13F MARATHON PETE CORP COM COM 56585A102 10,653 1,388 14.98 629 -15.11 0.2559
2018-11-09 2018-09-30 13F MARATHON PETE CORP COM COM 56585A102 9,265 15 0.16 741 14.18 0.2555
2018-08-10 2018-06-30 13F MARATHON PETE CORP COM COM 56585A102 9,250 -298 -3.12 649 -7.02 0.2344
2018-05-15 2018-03-31 13F/A-1 MARATHON PETE CORP COM COM 56585A102 9,548 500 5.53 698 16.92 0.2606
2018-05-14 2018-03-31 13F MARATHON PETE CORP COM COM 56585A102 9,048 597
2018-02-15 2017-12-31 13F MARATHON PETE CORP COM COM 56585A102 9,048 -500 -5.24 597 11.59 0.2199
2017-11-13 2017-09-30 13F MARATHON PETE CORP COM COM 56585A102 9,548 0 0.00 535 7.00 0.2085
2017-08-11 2017-06-30 13F MARATHON PETE CORP COM COM 56585A102 9,548 0 0.00 500 3.52 0.2033
2017-05-10 2017-03-31 13F MARATHON PETE CORP COM COM 56585A102 9,548 400 4.37 483 4.77 0.2032
2017-02-10 2016-12-31 13F MARATHON PETE CORP COM COM 56585A102 9,148 1,300 16.56 461 44.51 0.1967
2016-11-10 2016-09-30 13F MARATHON PETE CORP COM COM 56585A102 7,848 1,100 16.30 319 24.61 0.1370
2016-08-15 2016-06-30 13F MARATHON PETE CORP COM COM 56585A102 6,748 900 15.39 256 17.97 0.1109
2016-05-13 2016-03-31 13F MARATHON PETE CORP COM COM 56585A102 5,848 5,848 217 0.0991
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.