Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionPark National Corp /oh/
Latest Disclosed Ownership16,860 shares
Latest Disclosed Value $ 4,116,875
Park National Corp /oh/ reports 2.20% decrease in ownership of MPC / Marathon Petroleum Corporation

On April 16, 2026 - Park National Corp /oh/ filed a 13F-HR form disclosing ownership of 16,860 shares of Marathon Petroleum Corporation (MX:MPC) valued at $4,116,875 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 5, 2026 disclosing 17,239 shares of Marathon Petroleum Corporation. This represents a change in shares of -2.20% 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)
2026-04-16 2026-03-31 13F Marathon Petroleum Com 56585A102 16,860 -379 -2.20 4,117 46.84 0.1254
2026-01-05 2025-12-31 13F Marathon Petroleum Com 56585A102 17,239 171 1.00 2,804 -14.78 0.0874
2025-10-01 2025-09-30 13F Marathon Petroleum Com 56585A102 17,068 -45 -0.26 3,290 15.73 0.1029
2025-07-01 2025-06-30 13F Marathon Petroleum Com 56585A102 17,113 -553 -3.13 2,843 10.45 0.0938
2025-04-02 2025-03-31 13F Marathon Petroleum Com 56585A102 17,666 -15,444 -46.64 2,574 -44.28 0.0946
2025-01-08 2024-12-31 13F Marathon Petroleum Com 56585A102 33,110 -4,563 -12.11 4,619 -24.75 0.1692
2024-10-01 2024-09-30 13F Marathon Petroleum Com 56585A102 37,673 0 0.00 6,137 -6.09 0.2149
2024-07-15 2024-06-30 13F Marathon Petroleum Com 56585A102 37,673 7,567 25.13 6,536 7.73 0.2416
2024-04-01 2024-03-31 13F Marathon Petroleum Com 56585A102 30,106 1,989 7.07 6,066 45.43 0.2337
2024-01-02 2023-12-31 13F Marathon Petroleum Com 56585A102 28,117 5,830 26.16 4,171 23.70 0.1707
2023-10-02 2023-09-30 13F Marathon Petroleum Com 56585A102 22,287 6,907 44.91 3,373 88.06 0.1524
2023-07-03 2023-06-30 13F Marathon Petroleum Com 56585A102 15,380 88 0.58 1,793 -13.00 0.0781
2023-04-03 2023-03-31 13F Marathon Petroleum Com 56585A102 15,292 0 0.00 2,062 15.85 0.0918
2023-02-06 2022-12-31 13F Marathon Petroleum Com 56585A102 15,292 29 0.19 1,780 17.35 0.0793
2022-10-03 2022-09-30 13F Marathon Petroleum Com 56585A102 15,263 1,445 10.46 1,516 33.45 0.0761
2022-07-06 2022-06-30 13F/A-1 Marathon Petroleum Com 56585A102 13,818 55 0.40 1,136 -3.48 0.0547
2022-07-01 2022-06-30 13F Marathon Petroleum Com 56585A102 13,818 55 1,136 0.0287
2022-04-01 2022-03-31 13F Marathon Petroleum Com 56585A102 13,763 0 0.00 1,177 33.75 0.0489
2022-01-04 2021-12-31 13F Marathon Petroleum Com 56585A102 13,763 1,307 10.49 880 14.29 0.0343
2021-10-01 2021-09-30 13F Marathon Petroleum Com 56585A102 12,456 -2,250 -15.30 770 -13.29 0.0324
2021-07-01 2021-06-30 13F Marathon Petroleum Com 56585A102 14,706 -150 -1.01 888 11.70 0.0372
2021-04-01 2021-03-31 13F Marathon Petroleum Com 56585A102 14,856 -2,290 -13.36 795 12.13 0.0349
2021-01-04 2020-12-31 13F Marathon Petroleum Com 56585A102 17,146 -417 -2.37 709 37.67 0.0332
2020-10-01 2020-09-30 13F Marathon Petroleum Com 56585A102 17,563 545 3.20 515 -19.03 0.0270
2020-07-01 2020-06-30 13F Marathon Petroleum Com 56585A102 17,018 -240 -1.39 636 56.27 0.0356
2020-04-01 2020-03-31 13F Marathon Petroleum Com 56585A102 17,258 12,720 280.30 407 49.08 0.0258
2020-01-02 2019-12-31 13F Marathon Petroleum Com 56585A102 4,538 -200 -4.22 273 -4.88 0.0139
2019-10-01 2019-09-30 13F Marathon Petroleum Com 56585A102 4,738 -900 -15.96 287 -8.89 0.0156
2019-07-01 2019-06-30 13F Marathon Petroleum Com 56585A102 5,638 -723 -11.37 315 -17.11 0.0171
2019-04-01 2019-03-31 13F Marathon Petroleum Com 56585A102 6,361 -2,360 -27.06 380 -26.21 0.0214
2019-01-02 2018-12-31 13F Marathon Petroleum Com 56585A102 8,721 853 10.84 515 -18.25 0.0319
2018-10-02 2018-09-30 13F Marathon Petroleum Com 56585A102 7,868 -1,661 -17.43 630 -5.69 0.0346
2018-07-02 2018-06-30 13F Marathon Petroleum Com 56585A102 9,529 1,232 14.85 668 10.23 0.0383
2018-04-02 2018-03-31 13F Marathon Petroleum Com 56585A102 8,297 -70 -0.84 606 9.78 0.0352
2018-01-02 2017-12-31 13F Marathon Petroleum Com 56585A102 8,367 -548 -6.15 552 10.40 0.0309
2017-10-02 2017-09-30 13F Marathon Petroleum Com 56585A102 8,915 0 0.00 500 7.30 0.0287
2017-07-03 2017-06-30 13F Marathon Petroleum Com 56585A102 8,915 -374 -4.03 466 -0.64 0.0277
2017-04-03 2017-03-31 13F Marathon Petroleum Com 56585A102 9,289 -28 -0.30 469 0.00 0.0282
2017-01-03 2016-12-31 13F Marathon Petroleum Com 56585A102 9,317 -41 -0.44 469 23.42 0.0285
2016-10-03 2016-09-30 13F Marathon Petroleum Equity 56585A102 9,358 0 0.00 380 7.04 0.0242
2016-07-01 2016-06-30 13F Marathon Petroleum Equity 56585A102 9,358 -939 -9.12 355 -7.07 0.0227
2016-04-01 2016-03-31 13F Marathon Petroleum Equity 56585A102 10,297 -424 -3.95 382 -31.29 0.0253
2016-01-04 2015-12-31 13F Marathon Petroleum Equity 56585A102 10,721 -730 -6.37 556 4.91 0.0377
2015-10-01 2015-09-30 13F Marathon Petroleum Equity 56585A102 11,451 -331 -2.81 530 -14.10 0.0380
2015-07-01 2015-06-30 13F Marathon Petroleum Equity 56585A102 11,782 5,753 95.42 617 0.00 0.0423
2015-04-01 2015-03-31 13F Marathon Petroleum Equity 56585A102 6,029 231 3.98 617 17.97 0.0418
2015-01-02 2014-12-31 13F Marathon Petroleum Equity 56585A102 5,798 19 0.33 523 6.95 0.0346
2014-10-01 2014-09-30 13F Marathon Petroleum Equity 56585A102 5,779 -125 -2.12 489 6.30 0.0356
2014-07-01 2014-06-30 13F Marathon Petroleum Equity 56585A102 5,904 -325 -5.22 461 -15.13 0.0316
2014-04-01 2014-03-31 13F Marathon Petroleum Equity 56585A102 6,229 114 1.86 542 -99.90 0.0385
2014-01-03 2013-12-31 13F Marathon Petroleum Equity 56585A102 6,115 151 2.53 560,929 46.23 0.0399
2013-10-01 2013-09-30 13F Marathon Petroleum Equity 56585A102 5,964 0 0.00 383,604 -9.49 0.0293
2013-07-05 2013-06-30 13F Marathon Petroleum Equity 56585A102 5,964 5,964 423,802 0.0343
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.