Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionUmb Bank N A/mo
Latest Disclosed Ownership15,939 shares
Latest Disclosed Value $ 3,891,985
Umb Bank N A/mo reports 13.59% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 11, 2026 - Umb Bank N A/mo filed a 13F-HR form disclosing ownership of 15,939 shares of Marathon Petroleum Corporation (MX:MPC) valued at $3,891,985 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 18,446 shares of Marathon Petroleum Corporation. This represents a change in shares of -13.59% 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)
2026-05-11 2026-03-31 13F MARATHON PETE COM 56585A102 15,939 -2,507 -13.59 3,892 29.74 0.0543
2026-02-13 2025-12-31 13F MARATHON PETE COM 56585A102 18,446 -4,570 -19.86 3,000 -32.39 0.0399
2025-11-04 2025-09-30 13F MARATHON PETE COM 56585A102 23,016 -820 -3.44 4,436 12.05 0.0653
2025-07-11 2025-06-30 13F/A-01 MARATHON PETE COM 56585A102 23,836 876 3.82 3,959 18.36 0.0617
2025-07-10 2025-06-30 13F MARATHON PETE COM 56585A102 22,960 0 3,345 0.0485
2025-04-14 2025-03-31 13F MARATHON PETE COM 56585A102 22,960 -1,059 -4.41 3,345 -0.15 0.0551
2025-01-16 2024-12-31 13F Marathon Petroleum COM 56585A102 24,019 -31,701 -56.89 3,351 -63.09 0.0530
2024-10-09 2024-09-30 13F Marathon Petroleum COM 56585A102 55,720 -2,306 -3.97 9,077 -9.83 0.1413
2024-07-29 2024-06-30 13F Marathon Petroleum COM 56585A102 58,026 -19,862 -25.50 10,066 -35.86 0.1650
2024-04-26 2024-03-31 13F Marathon Petroleum COM 56585A102 77,888 54,959 239.69 15,694 361.45 0.2486
2024-01-23 2023-12-31 13F Marathon Petroleum COM 56585A102 22,929 -290 -1.25 3,402 -3.19 0.0497
2023-10-18 2023-09-30 13F Marathon Petroleum COM 56585A102 23,219 353 1.54 3,514 31.77 0.0564
2023-07-25 2023-06-30 13F Marathon Petroleum COM 56585A102 22,866 -518 -2.22 2,666 -15.42 0.0405
2023-04-11 2023-03-31 13F Marathon Petroleum COM 56585A102 23,384 -633 -2.64 3,153 157,500.00 0.0504
2023-01-10 2022-12-31 13F Marathon Petroleum COM 56585A102 24,017 -1,695 -6.59 3 -99.92 0.0442
2022-10-13 2022-09-30 13F Marathon Petroleum COM 56585A102 25,712 151 0.59 2,554 21.56 0.0431
2022-07-20 2022-06-30 13F Marathon Petroleum COM 56585A102 25,561 -3,340 -11.56 2,101 -14.97 0.0327
2022-04-22 2022-03-31 13F Marathon Petroleum COM 56585A102 28,901 -1,905 -6.18 2,471 25.37 0.0327
2022-02-09 2021-12-31 13F Marathon Petroleum COM 56585A102 30,806 2,545 9.01 1,971 12.82 0.0249
2021-10-18 2021-09-30 13F Marathon Petroleum COMMON 56585A102 28,261 0 0.00 1,747 2.28 0.0393
2021-07-26 2021-06-30 13F Marathon Petroleum COMMON 56585A102 28,261 11 0.04 1,708 13.04 0.0391
2021-04-15 2021-03-31 13F Marathon Petroleum COMMON 56585A102 28,250 0 0.00 1,511 29.26 0.0369
2021-02-04 2020-12-31 13F Marathon Petroleum COMMON 56585A102 28,250 110 0.39 1,169 11.12 0.0315
2020-10-16 2020-09-30 13F Marathon Petroleum COMMON 56585A102 28,140 0 0.00 1,052 0.00 0.0326
2020-07-16 2020-06-30 13F Marathon Petroleum COMMON 56585A102 28,140 233 0.83 1,052 59.64 0.0326
2020-05-26 2020-03-31 13F Marathon Petroleum COMMON 56585A102 27,907 -1,547 -5.25 659 -62.87 0.0236
2020-01-31 2019-12-31 13F Marathon Petroleum COMMON 56585A102 29,454 31 0.11 1,775 -0.67 0.0489
2019-10-30 2019-09-30 13F Marathon Petroleum COMMON 56585A102 29,423 269 0.92 1,787 9.70 0.0429
2019-07-30 2019-06-30 13F Marathon Petroleum COMMON 56585A102 29,154 -316 -1.07 1,629 -7.65 0.0400
2019-04-30 2019-03-31 13F Marathon Petroleum COMMON 56585A102 29,470 123 0.42 1,764 1.85 0.0538
2019-01-24 2018-12-31 13F Marathon Petroleum COMMON 56585A102 29,347 68 0.23 1,732 -26.05 0.0529
2018-10-22 2018-09-30 13F Marathon Petroleum COMMON 56585A102 29,279 0 0.00 2,342 13.97 0.0696
2018-07-31 2018-06-30 13F Marathon Petroleum COMMON 56585A102 29,279 1,250 4.46 2,055 0.29 0.0652
2018-04-25 2018-03-31 13F Marathon Petroleum COMMON 56585A102 28,029 250 0.90 2,049 11.84 0.0662
2018-01-22 2017-12-31 13F Marathon Petroleum COMMON 56585A102 27,779 -1,282 -4.41 1,832 12.39 0.0597
2017-10-11 2017-09-30 13F Marathon Petroleum COMMON 56585A102 29,061 40 0.14 1,630 7.31 0.0560
2017-08-02 2017-06-30 13F Marathon Petroleum COMMON 56585A102 29,021 -115 -0.39 1,519 3.12 0.0532
2017-04-24 2017-03-31 13F Marathon Petroleum COMMON 56585A102 29,136 900 3.19 1,473 3.66 0.0515
2017-01-18 2016-12-31 13F Marathon Petroleum COMMON 56585A102 28,236 -165 -0.58 1,421 23.24 0.0523
2016-10-28 2016-09-30 13F Marathon Petroleum COMMON 56585A102 28,401 133 0.47 1,153 7.46 0.0465
2016-07-26 2016-06-30 13F Marathon Petroleum COMMON 56585A102 28,268 32 0.11 1,073 2.19 0.0451
2016-04-20 2016-03-31 13F Marathon Petroleum COMMON 56585A102 28,236 -1,425 -4.80 1,050 -31.73 0.0448
2016-01-19 2015-12-31 13F Marathon Petroleum COMMON 56585A102 29,661 1,425 5.05 1,538 17.58 0.0670
2015-10-28 2015-09-30 13F Marathon Petroleum COMMON 56585A102 28,236 -1,825 -6.07 1,308 -16.85 0.0768
2015-07-20 2015-06-30 13F Marathon Petroleum COMMON 56585A102 30,061 14,658 95.16 1,573 -0.25 0.0720
2015-04-17 2015-03-31 13F Marathon Petroleum COMMON 56585A102 15,403 500 3.36 1,577 17.16 0.0711
2015-01-23 2014-12-31 13F Marathon Petroleum COMMON 56585A102 14,903 353 2.43 1,346 9.25 0.0602
2014-10-21 2014-09-30 13F Marathon Petroleum COMMON 56585A102 14,550 -550 -3.64 1,232 4.58 0.0601
2014-07-18 2014-06-30 13F Marathon Petroleum COMMON 56585A102 15,100 -1,260 -7.70 1,178 -17.28 0.0559
2014-04-30 2014-03-31 13F Marathon Petroleum COMMON 56585A102 16,360 19 0.12 1,424 -5.00 0.0798
2014-02-05 2013-12-31 13F Marathon Petroleum COMMON 56585A102 16,341 -327 -1.96 1,499 39.83 0.0822
2013-11-05 2013-09-30 13F/A-1 Marathon Petroleum COMMON 56585A102 16,668 0 0.00 1,072 -9.46 0.0619
2013-11-01 2013-09-30 13F Marathon Petroleum COMMON 56585A102 16,668 1,184
2013-08-13 2013-06-30 13F Marathon Petroleum COMMON 56585A102 16,668 16,668 1,184 0.0694
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.