Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionNorinchukin Bank, The
Latest Disclosed Ownership19,484 shares
Latest Disclosed Value $ 4,757,603
Norinchukin Bank, The reports 2.14% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 15, 2026 - Norinchukin Bank, The filed a 13F-HR form disclosing ownership of 19,484 shares of Marathon Petroleum Corporation (MX:MPC) valued at $4,757,603 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 19,910 shares of Marathon Petroleum Corporation. This represents a change in shares of -2.14% 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)
2026-05-15 2026-03-31 13F MARATHON PETE COM 56585A102 19,484 -426 -2.14 4,758 46.96 0.0486
2026-02-17 2025-12-31 13F MARATHON PETE COM 56585A102 19,910 1,277 6.85 3,238 -9.86 0.0377
2025-11-14 2025-09-30 13F MARATHON PETE COM 56585A102 18,633 283 1.54 3,591 17.81 0.0482
2025-08-14 2025-06-30 13F MARATHON PETE COM 56585A102 18,350 -183 -0.99 3,048 12.89 0.0454
2025-05-14 2025-03-31 13F MARATHON PETE COM 56585A102 18,533 2,511 15.67 2,700 20.81 0.0497
2025-02-13 2024-12-31 13F MARATHON PETE COM 56585A102 16,022 1,502 10.34 2,235 -5.50 0.0472
2024-11-14 2024-09-30 13F MARATHON PETE COM 56585A102 14,520 1,773 13.91 2,365 6.97 0.0558
2024-08-14 2024-06-30 13F MARATHON PETE COM 56585A102 12,747 679 5.63 2,211 -9.05 0.0631
2024-05-14 2024-03-31 13F MARATHON PETE COM 56585A102 12,068 -533 -4.23 2,432 30.07 0.0728
2024-02-13 2023-12-31 13F MARATHON PETE COM 56585A102 12,601 -753 -5.64 1,869 -7.48 0.0438
2023-11-13 2023-09-30 13F MARATHON PETE COM 56585A102 13,354 -2,940 -18.04 2,021 6.37 0.0475
2023-08-14 2023-06-30 13F MARATHON PETE COM 56585A102 16,294 -13,152 -44.66 1,900 -52.17 0.0320
2023-05-12 2023-03-31 13F MARATHON PETE COM 56585A102 29,446 231 0.79 3,970 16.76 0.0782
2023-02-13 2022-12-31 13F MARATHON PETE COM 56585A102 29,215 -8,317 -22.16 3,400 -8.80 0.0733
2022-11-14 2022-09-30 13F MARATHON PETE COM 56585A102 37,532 2,156 6.09 3,728 28.20 0.0759
2022-08-10 2022-06-30 13F MARATHON PETE COM 56585A102 35,376 -17,890 -33.59 2,908 -36.14 0.0569
2022-05-12 2022-03-31 13F MARATHON PETE COM 56585A102 53,266 317 0.60 4,554 34.42 0.0607
2022-02-10 2021-12-31 13F MARATHON PETE COM 56585A102 52,949 -2,231 -4.04 3,388 -0.67 0.0427
2021-11-09 2021-09-30 13F MARATHON PETE COM 56585A102 55,180 1,285 2.38 3,411 4.76 0.0474
2021-08-11 2021-06-30 13F MARATHON PETE COM 56585A102 53,895 -259 -0.48 3,256 12.39 0.0471
2021-05-12 2021-03-31 13F MARATHON PETE COM 56585A102 54,154 902 1.69 2,897 31.50 0.0399
2021-02-12 2020-12-31 13F MARATHON PETE COM 56585A102 53,252 -1,335 -2.45 2,203 37.52 0.0314
2020-11-12 2020-09-30 13F MARATHON PETE COM 56585A102 54,587 -1,826 -3.24 1,602 -24.04 0.0253
2020-08-12 2020-06-30 13F MARATHON PETE COM 56585A102 56,413 -485 -0.85 2,109 56.92 0.0360
2020-05-13 2020-03-31 13F MARATHON PETE COM 56585A102 56,898 -30,450 -34.86 1,344 -74.46 0.0262
2020-02-12 2019-12-31 13F MARATHON PETE COM 56585A102 87,348 -9,631 -9.93 5,263 -10.66 0.0687
2019-11-12 2019-09-30 13F MARATHON PETE COM 56585A102 96,979 3,568 3.82 5,891 12.85 0.0832
2019-08-09 2019-06-30 13F MARATHON PETECORP COM 56585A102 93,411 -34,439 -26.94 5,220 -31.78 0.0802
2019-05-10 2019-03-31 13F MARATHON PETECORP COM 56585A102 127,850 1,292 1.02 7,652 2.46 0.0976
2019-02-08 2018-12-31 13F MARATHON PETECORP COM 56585A102 126,558 68,549 118.17 7,468 60.98 0.1045
2018-11-08 2018-09-30 13F MARATHON PETECORP COM 56585A102 58,009 4,508 8.43 4,639 23.57 0.0629
2018-08-10 2018-06-30 13F MARATHON PETECORP COM 56585A102 53,501 8,554 19.03 3,754 14.24 0.0560
2018-05-10 2018-03-31 13F MARATHON PETE COM 56585A102 44,947 -5,675 -11.21 3,286 -1.62 0.0550
2018-02-09 2017-12-31 13F MARATHON PETECORP COM 56585A102 50,622 12,120 31.48 3,340 54.70 0.0585
2017-11-08 2017-09-30 13F MARATHON PETECORP COM 56585A102 38,502 2,504 6.96 2,159 14.60 0.0418
2017-08-10 2017-06-30 13F MARATHON PETECORP COM 56585A102 35,998 1,701 4.96 1,884 8.71 0.0387
2017-05-08 2017-03-31 13F MARATHON PETECORP COM 56585A102 34,297 2,277 7.11 1,733 7.51 0.0373
2017-02-08 2016-12-31 13F MARATHON PETECORP COM 56585A102 32,020 3,712 13.11 1,612 40.30 0.0376
2016-11-08 2016-09-30 13F MARATHON PETECORP COM 56585A102 28,308 518 1.86 1,149 8.91 0.0276
2016-08-08 2016-06-30 13F MARATHON PETE COM 56585A102 27,790 -62,881 -69.35 1,055 -68.70 0.0257
2016-05-11 2016-03-31 13F MARATHON PETE COM 56585A102 90,671 -11,202 -11.00 3,371 -36.17 0.0818
2016-02-09 2015-12-31 13F MARATHON PETE COM 56585A102 101,873 555 0.55 5,281 12.51 0.1340
2015-11-09 2015-09-30 13F MARATHON PETE COM 56585A102 101,318 39,263 63.27 4,694 44.61 0.1224
2015-07-31 2015-06-30 13F MARATHON PETE COM 56585A102 62,055 30,902 99.19 3,246 1.76 0.0828
2015-05-08 2015-03-31 13F MARATHON PETE COM 56585A102 31,153 2,787 9.83 3,190 24.61 0.0772
2015-02-10 2014-12-31 13F MARATHON PETE COM 56585A102 28,366 14,254 101.01 2,560 114.23 0.0625
2014-10-31 2014-09-30 13F MARATHON PETE COM 56585A102 14,112 3,342 31.03 1,195 42.09 0.0341
2014-07-31 2014-06-30 13F MARATHON PETE COM 56585A102 10,770 -1,419 -11.64 841 -20.74 0.0248
2014-05-13 2014-03-31 13F MARATHON PETE COM 56585A102 12,189 944 8.39 1,061 2.81 0.0300
2014-02-14 2013-12-31 13F MARATHON PETE COM 56585A102 11,245 -514 -4.37 1,032 36.51 0.0278
2013-11-14 2013-09-30 13F MARATHON PETE COM 56585A102 11,759 510 4.53 756 -5.38 0.0216
2013-08-13 2013-06-30 13F MARATHON PETE COM 56585A102 11,249 11,249 799 0.0242
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.