Marathon Petroleum Corporation
US ˙ NYSE ˙ US56585A1025

SecurityMPC / Marathon Petroleum Corporation
InstitutionUs Bancorp \de\
Latest Disclosed Ownership1,548,556 shares
Latest Disclosed Value $ 378,126,526
Us Bancorp \de\ reports 3.64% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 14, 2026 - Us Bancorp \de\ filed a 13F-HR form disclosing ownership of 1,548,556 shares of Marathon Petroleum Corporation (US:MPC) valued at $378,126,404 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 1,607,011 shares of Marathon Petroleum Corporation. This represents a change in shares of -3.64% during the quarter. The current value of the position is $413,789,649 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)
2026-05-14 2026-03-31 13F MARATHON PETE COM 56585A102 1,548,556 -58,455 -3.64 378,127 44.68 0.1415
2026-01-30 2025-12-31 13F MARATHON PETE COM 56585A102 1,607,011 -48,050 -2.90 261,348 -18.07 0.3062
2025-11-12 2025-09-30 13F MARATHON PETE COM 56585A102 1,655,061 -80,078 -4.62 318,996 10.68 0.3781
2025-07-24 2025-06-30 13F MARATHON PETE COM 56585A102 1,735,139 -136,832 -7.31 288,224 5.68 0.3628
2025-05-08 2025-03-31 13F MARATHON PETE COM 56585A102 1,871,971 -39,332 -2.06 272,728 2.29 0.3644
2025-02-05 2024-12-31 13F MARATHON PETE COM 56585A102 1,911,303 -37,967 -1.95 266,627 -16.04 0.3491
2024-10-28 2024-09-30 13F MARATHON PETE COM 56585A102 1,949,270 -30,996 -1.57 317,556 -7.56 0.4078
2024-08-07 2024-06-30 13F MARATHON PETE COM 56585A102 1,980,266 -40,164 -1.99 343,537 -15.62 0.4683
2024-05-08 2024-03-31 13F MARATHON PETE COM 56585A102 2,020,430 -207,676 -9.32 407,117 23.16 0.5674
2024-02-09 2023-12-31 13F MARATHON PETE COM 56585A102 2,228,106 -317,193 -12.46 330,562 -14.19 0.4891
2023-11-03 2023-09-30 13F MARATHON PETE COM 56585A102 2,545,299 -107,770 -4.06 385,206 24.52 0.6296
2023-08-10 2023-06-30 13F MARATHON PETE COM 56585A102 2,653,069 -41,675 -1.55 309,348 -14.86 0.4981
2023-05-09 2023-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,694,744 -121,464 -4.31 363,332 10.85 0.6138
2023-02-13 2022-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,816,208 -144,650 -4.89 327,778 11.45 0.5802
2022-10-27 2022-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,960,858 -191,310 -6.07 294,102 13.49 0.6070
2022-08-01 2022-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,152,168 -88,978 -2.75 259,141 -6.49 0.5023
2022-05-11 2022-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,241,146 -60,174 -1.82 277,117 31.18 0.4612
2022-02-11 2021-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,301,320 85,088 2.65 211,252 6.27 0.3331
2021-11-10 2021-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,216,232 172,759 5.68 198,797 8.11 0.3739
2021-08-05 2021-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,043,473 94,729 3.21 183,887 16.58 0.3444
2021-04-28 2021-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,948,744 195,103 7.09 157,728 38.49 0.3190
2021-02-04 2020-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,753,641 150,069 5.76 113,890 49.09 0.2453
2020-11-10 2020-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,603,572 105,677 4.23 76,389 -18.19 0.1863
2020-08-07 2020-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,497,895 253,851 11.31 93,372 76.16 0.2450
2020-05-13 2020-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,244,044 124,511 5.87 53,005 -58.49 0.1653
2020-02-04 2019-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,119,533 57,342 2.78 127,702 1.93 0.3265
2019-11-08 2019-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,062,191 84,152 4.25 125,278 13.34 0.3414
2019-08-13 2019-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 1,978,039 269,890 15.80 110,532 8.12 0.3081
2019-05-08 2019-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 1,708,149 191,835 12.65 102,233 14.26 0.2951
2019-02-13 2018-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 1,516,314 291,038 23.75 89,477 -8.68 0.2889
2018-10-31 2018-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 1,225,276 -996 -0.08 97,985 13.89 0.2836
2018-08-08 2018-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 1,226,272 12,784 1.05 86,036 -3.02 0.2636
2018-05-08 2018-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 1,213,488 -97,140 -7.41 88,719 2.59 0.2722
2018-02-02 2017-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 1,310,628 31,093 2.43 86,477 20.52 0.2644
2017-11-13 2017-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 1,279,535 87,718 7.36 71,756 15.05 0.2298
2017-07-19 2017-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 1,191,817 -44,690 -3.61 62,369 -0.20 0.2081
2017-05-03 2017-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 1,236,507 -269,919 -17.92 62,493 -17.61 0.2141
2017-02-08 2016-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 1,506,426 187,082 14.18 75,849 41.64 0.2729
2016-11-04 2016-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 1,319,344 359,754 37.49 53,552 47.02 0.1985
2016-08-10 2016-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 959,590 312,766 48.35 36,426 51.47 0.1385
2016-05-13 2016-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 646,824 160,730 33.07 24,049 -4.56 0.0945
2016-02-10 2015-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 486,094 44,334 10.04 25,199 23.12 0.1014
2015-11-16 2015-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 441,760 26,890 6.48 20,467 -5.69 0.0858
2015-08-10 2015-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 414,870 205,178 97.85 21,701 1.08 0.0841
2015-05-08 2015-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 209,692 -10,451 -4.75 21,470 8.06 0.0825
2015-02-13 2014-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 220,143 32,624 17.40 19,869 25.14 0.0768
2014-11-14 2014-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 187,519 11,675 6.64 15,877 15.65 0.0643
2014-08-14 2014-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 175,844 12,707 7.79 13,729 -3.31 0.0547
2014-05-14 2014-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 163,137 11,799 7.80 14,199 2.28 0.0582
2014-02-13 2013-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 151,338 -5,605 -3.57 13,882 37.51 0.0562
2013-11-07 2013-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 156,943 -10,404 -6.22 10,095 -15.10 0.0446
2013-08-09 2013-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 167,347 167,347 11,891 0.0543
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.