Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionRockefeller Capital Management L.P.
Latest Disclosed Ownership250,288 shares
Latest Disclosed Value $ 61,115,615
Rockefeller Capital Management L.P. reports 12.14% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 14, 2026 - Rockefeller Capital Management L.P. filed a 13F-HR form disclosing ownership of 250,288 shares of Marathon Petroleum Corporation (MX:MPC) valued at $61,115,615 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 16, 2026 disclosing 284,863 shares of Marathon Petroleum Corporation. This represents a change in shares of -12.14% 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)
2026-05-14 2026-03-31 13F MARATHON PETE COM 56585A102 250,288 -34,575 -12.14 61,116 31.92 0.1084
2026-03-16 2025-12-31 13F/A-1 MARATHON PETE COM 56585A102 284,863 38,504 15.63 46,328 -2.43 0.0834
2026-02-14 2025-12-31 13F MARATHON PETE COM 56585A102 284,874 38,515 46,348 0.0423
2025-11-14 2025-09-30 13F MARATHON PETE COM 56585A102 246,359 3,002 1.23 47,483 17.46 0.0929
2025-08-14 2025-06-30 13F/A-1 MARATHON PETE COM 56585A102 243,357 7,963 3.38 40,424 17.87 0.0886
2025-08-08 2025-06-30 13F MARATHON PETE COM 56585A102 243,357 7,963 40,424 0.0510
2025-05-14 2025-03-31 13F MARATHON PETE COM 56585A102 235,394 15,250 6.93 34,295 11.58 0.0846
2025-02-13 2024-12-31 13F MARATHON PETE COM 56585A102 220,144 10,663 5.09 30,736 -9.98 0.0796
2024-11-14 2024-09-30 13F MARATHON PETE COM 56585A102 209,481 -15,091 -6.72 34,143 -12.39 0.0919
2024-08-12 2024-06-30 13F MARATHON PETE COM 56585A102 224,572 30,874 15.94 38,970 -0.15 0.1108
2024-05-14 2024-03-31 13F MARATHON PETE COM 56585A102 193,698 11,042 6.05 39,030 44.03 0.1139
2024-02-14 2023-12-31 13F MARATHON PETE COM 56585A102 182,656 -372 -0.20 27,099 -2.17 0.0905
2023-11-14 2023-09-30 13F MARATHON PETE COM 56585A102 183,028 -18,153 -9.02 27,700 18.91 0.1068
2023-08-14 2023-06-30 13F MARATHON PETE COM 56585A102 201,181 35,271 21.26 23,295 105,781.82 0.0902
2023-05-16 2023-03-31 13F MARATHON PETE COM 56585A102 165,910 -88,045 -34.67 22 -99.93 0.0962
2023-03-06 2022-12-31 13F MARATHON PETE COM 56585A102 253,955 -6,007 -2.31 29,556 14.47 0.1485
2022-11-02 2022-09-30 13F MARATHON PETE COM 56585A102 259,962 20,579 8.60 25,820 31.21 0.1335
2022-08-12 2022-06-30 13F MARATHON PETE COM 56585A102 239,383 66,932 38.81 19,679 33.47 0.1046
2022-05-13 2022-03-31 13F MARATHON PETE COM 56585A102 172,451 -38,082 -18.09 14,744 9.45 0.0711
2022-02-14 2021-12-31 13F MARATHON PETE COM 56585A102 210,533 -24,693 -10.50 13,471 -7.35 0.0629
2021-11-12 2021-09-30 13F MARATHON PETE COM 56585A102 235,226 34,468 17.17 14,539 19.88 0.0764
2021-08-10 2021-06-30 13F MARATHON PETE COM 56585A102 200,758 188,599 1,551.11 12,128 1,765.85 0.0683
2021-05-11 2021-03-31 13F MARATHON PETE COM 56585A102 12,159 421 3.59 650 34.30 0.0044
2021-02-12 2020-12-31 13F MARATHON PETE COM 56585A102 11,738 988 9.19 484 53.65 0.0037
2020-11-13 2020-09-30 13F MARATHON PETE COM 56585A102 10,750 -10,442 -49.27 315 -60.23 0.0030
2020-08-12 2020-06-30 13F MARATHON PETE COM 56585A102 21,192 889 4.38 792 65.34 0.0083
2020-05-12 2020-03-31 13F MARATHON PETE COM 56585A102 20,303 -6,834 -25.18 479 -70.70 0.0063
2020-02-07 2019-12-31 13F MARATHON PETE COM 56585A102 27,137 13,034 92.42 1,635 90.78 0.0204
2019-11-12 2019-09-30 13F MARATHON PETE COM 56585A102 14,103 240 1.73 857 10.58 0.0116
2019-08-09 2019-06-30 13F MARATHON PETE COM 56585A102 13,863 -2,594 -15.76 775 -21.32 0.0108
2019-05-10 2019-03-31 13F MARATHON PETE COM 56585A102 16,457 8,397 104.18 985 106.93 0.0140
2019-02-12 2018-12-31 13F MARATHON PETE COM 56585A102 8,060 7,737 2,395.36 476 1,730.77 0.0083
2018-11-02 2018-09-30 13F Marathon Petroleum Common 56585A102 323 0 0.00 26 13.04 0.0004
2018-07-31 2018-06-30 13F Marathon Petroleum Common 56585A102 323 -9 -2.71 23 -4.17 0.0004
2018-05-09 2018-03-31 13F Marathon Petroleum Common 56585A102 332 332 24 0.0004
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.