Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionLegal & General Group Plc
Latest Disclosed Ownership1,661,076 shares
Latest Disclosed Value $ 405,601,533
Legal & General Group Plc reports 3.09% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 8, 2026 - Legal & General Group Plc filed a 13F-HR form disclosing ownership of 1,661,076 shares of Marathon Petroleum Corporation (MX:MPC) valued at $405,601,533 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 1,714,107 shares of Marathon Petroleum Corporation. This represents a change in shares of -3.09% 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)
2026-05-08 2026-03-31 13F MARATHON PETE COM 56585A102 1,661,076 -53,031 -3.09 405,602 45.50 0.0503
2026-02-09 2025-12-31 13F MARATHON PETE COM 56585A102 1,714,107 -146,913 -7.89 278,765 -22.28 0.0618
2025-11-13 2025-09-30 13F MARATHON PETE COM 56585A102 1,861,020 35,847 1.96 358,693 18.31 0.0805
2025-08-12 2025-06-30 13F MARATHON PETE COM 56585A102 1,825,173 -104,341 -5.41 303,179 7.85 0.0753
2025-05-15 2025-03-31 13F MARATHON PETE COM 56585A102 1,929,514 -10,490 -0.54 281,111 3.87 0.0765
2025-02-13 2024-12-31 13F MARATHON PETE COM 56585A102 1,940,004 -211,350 -9.82 270,631 -22.78 0.0716
2025-02-28 2024-09-30 13F/A-2 MARATHON PETE COM 56585A102 2,151,354 -158,361 -6.86 350,477 -12.53 0.0922
2024-11-14 2024-09-30 13F/A-1 MARATHON PETE COM 56585A102 2,900,769 -229,943 472,564 0.0985
2024-11-14 2024-09-30 13F MARATHON PETE COM 56585A102 2,900,769 -229,943 472,564 0.0497
2025-05-29 2024-06-30 13F/A-1 MARATHON PETE COM 56585A102 2,309,715 -314,211 -11.97 400,689 -24.22 0.1132
2024-08-14 2024-06-30 13F MARATHON PETE COM 56585A102 3,130,712 -59,470 543,116 0.1216
2025-05-29 2024-03-31 13F/A-2 MARATHON PETE COM 56585A102 2,623,926 -169,125 -6.06 528,721 27.59 0.1522
2024-07-01 2024-03-31 13F/A-1 MARATHON PETE COM 56585A102 3,190,182 -199,237 642,821 0.1501
2024-05-14 2024-03-31 13F MARATHON PETE COM 56585A102 3,190,182 -199,237 642,821 0.0773
2025-05-29 2023-12-31 13F/A-1 MARATHON PETE COM 56585A102 2,793,051 -69,015 -2.41 414,377 -4.33 0.1287
2024-02-15 2023-12-31 13F MARATHON PETE COM 56585A102 3,389,419 527,353 502,854 0.1290
2023-11-14 2023-09-30 13F MARATHON PETE COM 56585A102 2,862,066 -182,049 -5.98 433,146 22.03 0.1511
2023-08-14 2023-06-30 13F MARATHON PETE COM 56585A102 3,044,115 19,955 0.66 354,944 -12.95 0.1155
2023-05-15 2023-03-31 13F MARATHON PETE COM 56585A102 3,024,160 -122,129 -3.88 407,746 11.35 0.1458
2023-02-14 2022-12-31 13F MARATHON PETE COM 56585A102 3,146,289 -496,094 -13.62 366,197 1.22 0.1406
2022-11-14 2022-09-30 13F MARATHON PETE COM 56585A102 3,642,383 -202,235 -5.26 361,799 14.47 0.1413
2022-08-22 2022-06-30 13F MARATHON PETE COM 56585A102 3,844,618 98,903 2.64 316,065 -1.31 0.1118
2022-05-16 2022-03-31 13F MARATHON PETE COM 56585A102 3,745,715 -671,603 -15.20 320,259 13.30 0.0974
2022-02-14 2021-12-31 13F MARATHON PETE COM 56585A102 4,417,318 -367,895 -7.69 282,664 -4.43 0.0855
2021-11-15 2021-09-30 13F MARATHON PETE COM 56585A102 4,785,213 248,065 5.47 295,773 7.89 0.0961
2021-08-12 2021-06-30 13F MARATHON PETE COM 56585A102 4,537,148 305,427 7.22 274,134 21.11 0.0917
2021-05-17 2021-03-31 13F MARATHON PETE COM 56585A102 4,231,721 -98,906 -2.28 226,354 26.37 0.0843
2021-02-12 2020-12-31 13F MARATHON PETE COM 56585A102 4,330,627 55,930 1.31 179,114 42.81 0.0701
2020-11-13 2020-09-30 13F MARATHON PETE COM 56585A102 4,274,697 7,090 0.17 125,420 -21.38 0.0561
2020-08-14 2020-06-30 13F MARATHON PETE COM 56585A102 4,267,607 -37,029 -0.86 159,523 55.95 0.0771
2020-05-14 2020-03-31 13F MARATHON PETE COM 56585A102 4,304,636 118,084 2.82 102,291 -59.45 0.0598
2020-02-13 2019-12-31 13F MARATHON PETE COM 56585A102 4,186,552 -163,693 -3.76 252,238 3.77 0.1202
2019-08-14 2019-06-30 13F MARATHON PETE COM 56585A102 4,350,245 -51,386 -1.17 243,085 -7.73 0.1308
2019-05-15 2019-03-31 13F MARATHON PETE COM 56585A102 4,401,631 665,224 17.80 263,441 19.49 0.1504
2019-02-15 2018-12-31 13F MARATHON PETE COM 56585A102 3,736,407 1,222,648 48.64 220,466 9.62 0.1708
2018-11-20 2018-09-30 13F MARATHON PETE COM 56585A102 2,513,759 108,292 4.50 201,126 19.16 0.1440
2018-08-10 2018-06-30 13F MARATHON PETE COM 56585A102 2,405,467 -220,427 -8.39 168,785 -12.07 0.1302
2018-05-17 2018-03-31 13F MARATHON PETE COM 56585A102 2,625,894 -240,416 -8.39 191,958 1.49 0.1465
2018-02-13 2017-12-31 13F MARATHON PETE COM 56585A102 2,866,310 -113,810 -3.82 189,134 13.17 0.1369
2017-11-09 2017-09-30 13F MARATHON PETE COM 56585A102 2,980,120 -23,670 -0.79 167,120 6.33 0.1257
2017-08-03 2017-06-30 13F MARATHON PETE COM 56585A102 3,003,790 -16,133 -0.53 157,177 2.98 0.1270
2017-05-12 2017-03-31 13F MARATHON PETE COM 56585A102 3,019,923 45,538 1.53 152,623 1.91 0.1295
2017-02-13 2016-12-31 13F MARATHON PETE COM 56585A102 2,974,385 20,848 0.71 149,765 24.95 0.1397
2016-10-12 2016-09-30 13F MARATHON PETE COM 56585A102 2,953,537 73,597 2.56 119,864 9.71 0.1214
2016-08-16 2016-06-30 13F MARATHON PETE COM 56585A102 2,879,940 186,223 6.91 109,259 9.13 0.1151
2016-05-16 2016-03-31 13F MARATHON PETE COM 56585A102 2,693,717 167,259 6.62 100,120 -23.56 0.1109
2016-02-16 2015-12-31 13F MARATHON PETE COM 56585A102 2,526,458 -18,971 -0.75 130,982 11.06 0.1480
2015-11-13 2015-09-30 13F MARATHON PETE COM 56585A102 2,545,429 44,185 1.77 117,937 -9.86 0.1438
2015-07-31 2015-06-30 13F MARATHON PETE COM 56585A102 2,501,244 1,284,167 105.51 130,835 4.99 0.1537
2015-05-14 2015-03-31 13F MARATHON PETE COM 56585A102 1,217,077 -23,078 -1.86 124,619 11.32 0.1490
2015-02-20 2014-12-31 13F/A-1 MARATHON PETE COM 56585A102 1,240,155 -47,430 -3.68 111,948 2.69 0.1317
2015-02-17 2014-12-31 13F MARATHON PETE COM 56585A102 1,240,155 -47,430 111,948 0.1379
2014-11-14 2014-09-30 13F MARATHON PETE COM 56585A102 1,287,585 -25,238 -1.92 109,016 6.37 0.1307
2014-08-13 2014-06-30 13F MARATHON PETE COM 56585A102 1,312,823 -48,674 -3.58 102,492 -13.51 0.1194
2014-05-14 2014-03-31 13F MARATHON PETE COM 56585A102 1,361,497 -63,839 -4.48 118,505 -9.36 0.1439
2014-02-07 2013-12-31 13F MARATHON PETE COM 56585A102 1,425,336 -71,378 -4.77 130,746 35.81 0.1582
2013-11-12 2013-09-30 13F MARATHON PETE COM 56585A102 1,496,714 -62,774 -4.03 96,269 -13.13 0.1268
2013-08-01 2013-06-30 13F MARATHON PETE COM 56585A102 1,559,488 1,559,488 110,817 0.1531
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.