Marathon Petroleum Corporation
US ˙ NYSE ˙ US56585A1025

SecurityMPC / Marathon Petroleum Corporation
InstitutionHancock Whitney Corp
Latest Disclosed Ownership18,324 shares
Latest Disclosed Value $ 4,549,379
Hancock Whitney Corp reports 4.79% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 15, 2026 - Hancock Whitney Corp filed a 13F-HR form disclosing ownership of 18,324 shares of Marathon Petroleum Corporation (US:MPC) valued at $4,474,354 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 19,245 shares of Marathon Petroleum Corporation. This represents a change in shares of -4.79% during the quarter. The current value of the position is $4,896,356 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)
2026-05-15 2026-03-31 13F MARATHON PETE COM 56585A102 18,324 -921 -4.79 4,549 45.38 0.0755
2026-02-17 2025-12-31 13F MARATHON PETE C COM 56585A102 19,245 -198 -1.02 3,130 -16.49 0.0564
2025-11-17 2025-09-30 13F MARATHON PETE COM 56585A102 19,443 -180 -0.92 3,747 14.97 0.0682
2025-08-14 2025-06-30 13F MARATHON PETE COM 56585A102 19,623 -62 -0.31 3,260 13.67 0.0623
2025-05-15 2025-03-31 13F MARATHON PETE COM 56585A102 19,685 -238 -1.19 2,868 3.17 0.0936
2025-02-14 2024-12-31 13F MARATHON PETE COM 56585A102 19,923 -378 -1.86 2,779 -15.97 0.0880
2024-11-13 2024-09-30 13F MARATHON PETE COM 56585A102 20,301 126 0.62 3,307 -5.49 0.1066
2024-08-13 2024-06-30 13F MARATHON PETE COMMON STOCK 56585A102 20,175 49 0.24 3,500 -13.71 0.1188
2024-05-16 2024-03-31 13F MARATHON PETE COMMON STOCK 56585A102 20,126 -349 -1.70 4,055 33.52 0.1400
2024-02-14 2023-12-31 13F MARATHON PETE COM 56585A102 20,475 -596 -2.83 3,038 -4.74 0.1127
2023-11-13 2023-09-30 13F MARATHON PETE COM 56585A102 21,071 -1,818 -7.94 3,189 19.45 0.1315
2023-11-13 2023-06-30 13F/A-1 MARATHON PETE COM 56585A102 22,889 -699 -2.96 2,669 -16.10 0.1049
2023-08-10 2023-06-30 13F MARATHON PETE COM 56585A102 22,889 -699 3 0.1049
2023-11-13 2023-03-31 13F/A-2 MARATHON PETE COM 56585A102 23,588 -5,913 -20.04 3,181 -7.34 0.1276
2023-05-16 2023-03-31 13F/A-1 MARATHON PETE COM 56585A102 23,588 -5,913 3 0.0680
2023-05-15 2023-03-31 13F MARATHON PETE COM 56585A102 29,501 0 3 0.0712
2023-11-13 2022-12-31 13F/A-1 MARATHON PETE COM 56585A102 29,501 -480 -1.60 3,433 15.24 0.1325
2023-02-03 2022-12-31 13F MARATHON PETE COM 56585A102 29,501 -480 3 0.1325
2022-10-26 2022-09-30 13F MARATHON PETE COM 56585A102 29,981 -4,346 -12.66 2,979 5.56 0.1274
2022-08-08 2022-06-30 13F MARATHON PETE COM 56585A102 34,327 -1,873 -5.17 2,822 -8.82 0.1129
2022-05-12 2022-03-31 13F MARATHON PETE COM 56585A102 36,200 -33,486 -48.05 3,095 -30.59 0.1053
2022-01-25 2021-12-31 13F MARATHON PETE COM 56585A102 69,686 -324 -0.46 4,459 3.05 0.1402
2021-11-04 2021-09-30 13F #REF! COM 56585A102 70,010 -11,323 -13.92 4,327 -11.95 0.1513
2021-08-09 2021-06-30 13F MARATHON PETE COM 56585A102 81,333 -2,720 -3.24 4,914 9.30 0.1568
2021-05-14 2021-03-31 13F MARATHON PETE COM 56585A102 84,053 -6,294 -6.97 4,496 20.31 0.1526
2021-02-09 2020-12-31 13F MARATHON PETE COM 56585A102 90,347 -7,600 -7.76 3,737 30.03 0.1248
2020-11-05 2020-09-30 13F MARATHON PETE COM 56585A102 97,947 -3,344 -3.30 2,874 -24.09 0.1061
2020-07-30 2020-06-30 13F MARATHON PETE COM 56585A102 101,291 -51,836 -33.85 3,786 4.67 0.1451
2020-05-08 2020-03-31 13F MARATHON PETE COM 56585A102 153,127 -10,631 -6.49 3,617 -63.34 0.1418
2020-02-06 2019-12-31 13F MARATHON PETE COM 56585A102 163,758 255 0.16 9,866 -0.66 0.3179
2019-10-29 2019-09-30 13F MARATHON PETE COM 56585A102 163,503 -9,479 -5.48 9,932 2.75 0.3256
2019-08-29 2019-06-30 13F MARATHON PETE COM 56585A102 172,982 -10,882 -5.92 9,666 -12.16 0.3094
2019-05-13 2019-03-31 13F MARATHON PETE COM 56585A102 183,864 -18,544 -9.16 11,004 -7.87 0.3529
2019-02-14 2018-12-31 13F MARATHON PETE COM 56585A102 202,408 -3,723 -1.81 11,944 -27.54 0.4036
2018-11-14 2018-09-30 13F MARATHON PETE COM 56585A102 206,131 -28,695 -12.22 16,484 0.05 0.4666
2018-08-14 2018-06-30 13F MARATHON PETE COMMON STOCK 56585A102 234,826 -13,960 -5.61 16,476 -9.41 0.7587
2018-05-15 2018-03-31 13F MARATHON PETE COMMON STOCK 56585A102 248,786 -16,617 -6.26 18,188 3.87 0.8153
2018-02-12 2017-12-31 13F MARATHON PETE COM 56585A102 265,403 -2,092 -0.78 17,511 16.73 0.7250
2017-11-14 2017-09-30 13F MARATHON PETE COM 56585A102 267,495 -6,264 -2.29 15,001 4.71 0.6356
2017-08-11 2017-06-30 13F MARATHON PETE COM 56585A102 273,759 2,227 0.82 14,326 4.39 0.6056
2017-05-09 2017-03-31 13F MARATHON PETE COM 56585A102 271,532 -37,649 -12.18 13,723 -11.85 0.5721
2017-02-14 2016-12-31 13F MARATHON PETE COM 56585A102 309,181 -1,955 -0.63 15,568 23.27 0.5789
2016-11-08 2016-09-30 13F MARATHON PETE COM 56585A102 311,136 8,395 2.77 12,629 9.82 0.4997
2016-08-09 2016-06-30 13F MARATHON PETE COM 56585A102 302,741 -1,489 -0.49 11,500 1.67 0.4795
2016-06-07 2016-03-31 13F/A-1 MARATHON PETE COM 56585A102 304,230 1,425 0.47 11,311 -27.95 0.4751
2016-05-13 2016-03-31 13F MARATHON PETE COM 56585A102 304,230 11,311
2016-02-12 2015-12-31 13F MARATHON PETE COM 56585A102 302,805 -83,926 -21.70 15,698 -12.38 0.6577
2015-11-16 2015-09-30 13F MARATHON PETE COM 56585A102 386,731 182,780 89.62 17,917 -14.20 0.7478
2015-08-13 2015-06-30 13F MARATHON PETE COM 56585A102 203,951 0 0.00 20,882 0.00 0.7971
2015-05-14 2015-03-31 13F MARATHON PETE COM 56585A102 203,951 -5,251 -2.51 20,882 10.59 0.7971
2015-02-17 2014-12-31 13F MARATHON PETE COM 56585A102 209,202 -8,508 -3.91 18,883 2.44 0.7174
2014-11-13 2014-09-30 13F MARATHON PETE COM 56585A102 217,710 1,861 0.86 18,434 8.35 0.7015
2014-08-14 2014-06-30 13F MARATHON PETE COM 56585A102 215,849 5,211 2.47 17,013 -7.21 0.6164
2014-05-15 2014-03-31 13F MARATHON PETE COM 56585A102 210,638 -2,134 -1.00 18,334 -6.06 0.7149
2014-02-14 2013-12-31 13F MARATHON PETE COM 56585A102 212,772 -1,967 -0.92 19,517 41.30 0.8016
2013-11-14 2013-09-30 13F MARATHON PETE COM 56585A102 214,739 12,937 6.41 13,812 -3.68 0.6356
2013-08-06 2013-06-30 13F MARATHON PETE COM 56585A102 201,802 201,802 14,340 0.7145
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.