Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionStandard Life Aberdeen plc
Latest Disclosed Ownership110,299 shares
Latest Disclosed Value $ 26,932,810
Standard Life Aberdeen plc reports 3.91% increase in ownership of MPC / Marathon Petroleum Corporation

On April 29, 2026 - Standard Life Aberdeen plc filed a 13F-HR form disclosing ownership of 110,299 shares of Marathon Petroleum Corporation (MX:MPC) valued at $26,932,810 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 106,145 shares of Marathon Petroleum Corporation. This represents a change in shares of 3.91% 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)
2026-04-29 2026-03-31 13F MARATHON PETE COM 56585A102 110,299 4,154 3.91 26,933 56.02 0.0236
2026-01-16 2025-12-31 13F MARATHON PETE COM 56585A102 106,145 -789 -0.74 17,262 -17.84 0.0267
2025-11-07 2025-09-30 13F MARATHON PETE COM 56585A102 106,934 -38,908 -26.68 21,009 -13.57 0.0332
2025-07-24 2025-06-30 13F MARATHON PETE COM 56585A102 145,842 6,083 4.35 24,307 19.96 0.0413
2025-05-13 2025-03-31 13F MARATHON PETE COM 56585A102 139,759 62,880 81.79 20,262 90.29 0.0395
2025-01-24 2024-12-31 13F MARATHON PETE COM 56585A102 76,879 -5,115 -6.24 10,649 -19.84 0.0200
2024-10-25 2024-09-30 13F MARATHON PETE COM 56585A102 81,994 -30,617 -27.19 13,283 -32.00 0.0244
2024-08-09 2024-06-30 13F MARATHON PETE COM 56585A102 112,611 -69,273 -38.09 19,536 -46.70 0.0374
2024-05-09 2024-03-31 13F MARATHON PETE COM 56585A102 181,884 -203,438 -52.80 36,650 -35.89 0.0719
2024-01-31 2023-12-31 13F MARATHON PETE COM 56585A102 385,322 71,364 22.73 57,166 20.31 0.1239
2023-11-07 2023-09-30 13F MARATHON PETE COM 56585A102 313,958 -53,466 -14.55 47,514 10.91 0.1212
2024-06-20 2023-06-30 13F/A-1 MARATHON PETE COM 56585A102 367,424 23,122 6.72 42,842 -7.71 0.0997
2023-08-04 2023-06-30 13F MARATHON PETE COM 56585A102 367,424 23,122 42,842 0.0997
2024-06-20 2023-03-31 13F/A-1 MARATHON PETE COM 56585A102 344,302 17,624 5.39 46,422 22.09 0.1162
2023-04-28 2023-03-31 13F MARATHON PETE COM 56585A102 344,302 17,624 46,422 0.1162
2024-06-20 2022-12-31 13F/A-1 MARATHON PETE COM 56585A102 326,678 25,799 8.57 38,022 27.22 0.1034
2023-02-10 2022-12-31 13F MARATHON PETE COM 56585A102 326,678 25,799 38,022 0.1034
2022-11-10 2022-09-30 13F MARATHON PETE COM 56585A102 300,879 102,988 52.04 29,887 82.66 0.0890
2022-08-05 2022-06-30 13F MARATHON PETE COM 56585A102 197,891 -248 -0.13 16,362 -4.72 0.0514
2022-05-04 2022-03-31 13F MARATHON PETE COM 56585A102 198,139 -141,273 -41.62 17,173 -20.93 0.0439
2022-02-10 2021-12-31 13F/A-1 MARATHON PETE COM 56585A102 339,412 -41,534 -10.90 21,720 -8.95 0.0477
2022-02-08 2021-12-31 13F MARATHON PETE COM 56585A102 339,412 -41,534 21,720 0.0156
2021-11-15 2021-09-30 13F MARATHON PETE COM 56585A102 380,946 -40,961 -9.71 23,856 -6.41 0.0538
2021-08-10 2021-06-30 13F MARATHON PETE COM 56585A102 421,907 -38,775 -8.42 25,491 3.45 0.0558
2021-05-06 2021-03-31 13F MARATHON PETE COM 56585A102 460,682 10,483 2.33 24,642 32.34 0.0560
2021-02-10 2020-12-31 13F MARATHON PETE COM 56585A102 450,199 7,136 1.61 18,620 43.23 0.0454
2020-10-21 2020-09-30 13F MARATHON PETE COM 56585A102 443,063 -33,159 -6.96 13,000 -26.97 0.0347
2020-08-10 2020-06-30 13F MARATHON PETE COM 56585A102 476,222 -35,386 -6.92 17,801 47.31 0.0482
2020-05-13 2020-03-31 13F MARATHON PETE COM 56585A102 511,608 97,767 23.62 12,084 -51.54 0.0384
2020-02-18 2019-12-31 13F MARATHON PETE COM 56585A102 413,841 -29,972 -6.75 24,935 -7.51 0.0603
2019-11-13 2019-09-30 13F MARATHON PETE COM 56585A102 443,813 -189,945 -29.97 26,961 -23.88 0.0672
2019-08-13 2019-06-30 13F MARATHON PETE COM 56585A102 633,758 -181,331 -22.25 35,417 -27.40 0.0786
2019-05-14 2019-03-31 13F MARATHON PETE COM 56585A102 815,089 -492,262 -37.65 48,787 -36.87 0.1057
2019-02-12 2018-12-31 13F MARATHON PETE COM 56585A102 1,307,351 138,958 11.89 77,285 -17.92 0.1835
2018-11-20 2018-09-30 13F/A-1 MARATHON PETE COM 56585A102 1,168,393 487,626 71.63 94,156 97.09 0.1755
2018-11-13 2018-09-30 13F MARATHON PETE COM 56585A102 1,168,393 487,626 94,156
2018-08-09 2018-06-30 13F MARATHON PETE COM 56585A102 680,767 132,739 24.22 47,773 19.19 0.0918
2018-05-15 2018-03-31 13F MARATHON PETE COM 56585A102 548,028 87,447 18.99 40,081 31.88 0.0795
2018-02-12 2017-12-31 13F MARATHON PETE COM 56585A102 460,581 92,329 25.07 30,391 47.14 0.0581
2017-11-14 2017-09-30 13F MARATHON PETE COM 56585A102 368,252 368,252 20,654 0.0377
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.