Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionWesbanco Bank Inc
Latest Disclosed Ownership20,409 shares
Latest Disclosed Value $ 4,983,470
Wesbanco Bank Inc reports 1.96% increase in ownership of MPC / Marathon Petroleum Corporation

On April 21, 2026 - Wesbanco Bank Inc filed a 13F-HR form disclosing ownership of 20,409 shares of Marathon Petroleum Corporation (MX:MPC) valued at $4,983,470 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 20,017 shares of Marathon Petroleum Corporation. This represents a change in shares of 1.96% 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)
2026-04-21 2026-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 20,409 392 1.96 4,983 53.09 0.0670
2026-02-03 2025-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 20,017 -2,685 -11.83 3,255 -25.60 0.0440
2025-11-06 2025-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 22,702 -4,262 -15.81 4,376 -2.30 0.1217
2025-07-07 2025-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 26,964 5,922 28.14 4,479 46.10 0.1329
2025-04-14 2025-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 21,042 -181 -0.85 3,066 3.55 0.1064
2025-01-17 2024-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 21,223 101 0.48 2,961 -13.95 0.1011
2024-10-11 2024-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 21,122 -927 -4.20 3,441 -10.07 0.1167
2024-07-11 2024-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 22,049 -1,591 -6.73 3,825 -19.69 0.1428
2024-04-23 2024-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 23,640 8,188 52.99 4,763 107.81 0.1797
2024-02-16 2023-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 15,452 -9,679 -38.51 2,292 -39.73 0.1298
2023-12-11 2023-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 25,131 775 3.18 3,803 190,050.00 0.1659
2023-07-13 2023-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 24,356 -671 -2.68 3 -33.33 0.1194
2023-04-21 2023-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 25,027 -491 -1.92 3 50.00 0.1463
2023-01-18 2022-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 25,518 7,596 42.38 3 -99.89 0.1325
2022-10-13 2022-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 17,922 -18,542 -50.85 1,780 -40.63 0.1203
2022-07-18 2022-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 36,464 -420 -1.14 2,998 -4.95 0.1322
2022-04-25 2022-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 36,884 -1,463 -3.82 3,154 28.58 0.1194
2022-02-02 2021-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 38,347 -1,883 -4.68 2,453 -1.37 0.0884
2021-10-12 2021-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 40,230 385 0.97 2,487 3.32 0.0954
2021-08-09 2021-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 39,845 -3,235 -7.51 2,407 4.47 0.0897
2021-05-06 2021-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 43,080 2,814 6.99 2,304 95.09 0.0910
2020-11-13 2020-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 40,266 -85,908 -68.09 1,181 -74.96 0.0547
2020-07-14 2020-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 126,174 -3,346 -2.58 4,717 54.15 0.2322
2020-05-12 2020-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 129,520 25,053 23.98 3,060 -51.38 0.1774
2020-02-13 2019-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 104,467 -2,859 -2.66 6,294 -3.47 0.2877
2019-11-07 2019-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 107,326 3,707 3.58 6,520 12.61 0.3242
2019-08-13 2019-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 103,619 1,713 1.68 5,790 -5.07 0.2824
2019-05-09 2019-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 101,906 17,161 20.25 6,099 21.96 0.3044
2019-02-05 2018-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 84,745 -1,235 -1.44 5,001 -27.27 0.2976
2018-11-09 2018-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 85,980 -3,113 -3.49 6,876 10.02 0.3392
2018-08-08 2018-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 89,093 -4,664 -4.97 6,250 -8.83 0.3233
2018-05-18 2018-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 93,757 1,154 1.25 6,855 12.19 0.3500
2018-02-01 2017-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 92,603 -11,346 -10.91 6,110 4.82 0.4140
2017-11-02 2017-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 103,949 -11,302 -9.81 5,829 -3.37 0.3039
2017-08-08 2017-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 115,251 -2,164 -1.84 6,032 1.63 0.3286
2017-04-27 2017-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 117,415 -5,226 -4.26 5,935 -3.89 0.3290
2017-02-02 2016-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 122,641 -25,854 -17.41 6,175 2.46 0.3525
2016-11-09 2016-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 148,495 1,407 0.96 6,027 7.95 0.3559
2016-08-09 2016-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 147,088 1,721 1.18 5,583 3.31 0.3327
2016-05-12 2016-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 145,367 -50,692 -25.86 5,404 -46.83 0.3210
2016-02-04 2015-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 196,059 -10,453 -5.06 10,164 6.23 0.6008
2015-11-03 2015-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 206,512 -20,211 -8.91 9,568 -19.33 0.5801
2015-08-05 2015-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 226,723 111,561 96.87 11,860 0.59 0.6599
2015-05-04 2015-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 115,162 115,162 0.00 11,791 0.6503
2015-02-03 2014-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 0 -107,569 -100.00 0 -100.00
2014-11-06 2014-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 107,569 16,865 18.59 9,108 28.63 0.5116
2014-07-14 2014-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 90,704 20,645 29.47 7,081 16.12 0.3951
2014-05-02 2014-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 70,059 64,765 1,223.37 6,098 1,154.73 0.3469
2014-02-03 2013-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 5,294 100 1.93 486 45.51 0.0277
2013-11-05 2013-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 5,194 -100 -1.89 334 -11.17 0.0207
2013-08-14 2013-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 5,294 5,294 376 0.0246
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.