Marathon Petroleum Corporation
US ˙ NYSE ˙ US56585A1025

SecurityMPC / Marathon Petroleum Corporation
InstitutionJacobi Capital Management LLC
Latest Disclosed Ownership2,686 shares
Latest Disclosed Value $ 655,767
Jacobi Capital Management LLC reports 6.63% increase in ownership of MPC / Marathon Petroleum Corporation

On May 14, 2026 - Jacobi Capital Management LLC filed a 13F-HR form disclosing ownership of 2,686 shares of Marathon Petroleum Corporation (US:MPC) valued at $655,867 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,519 shares of Marathon Petroleum Corporation. This represents a change in shares of 6.63% during the quarter. The current value of the position is $717,726 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)
2026-05-14 2026-03-31 13F MARATHON PETE COM 56585A102 2,686 167 6.63 656 60.15 0.0366
2026-02-13 2025-12-31 13F MARATHON PETE COM 56585A102 2,519 45 1.82 410 -14.08 0.0237
2025-11-07 2025-09-30 13F MARATHON PETE COM 56585A102 2,474 114 4.83 477 21.43 0.0290
2025-08-12 2025-06-30 13F MARATHON PETE COM 56585A102 2,360 388 19.68 392 36.59 0.0260
2025-05-27 2025-03-31 13F MARATHON PETE COM 56585A102 1,972 122 6.59 287 11.24 0.0212
2025-02-05 2024-12-31 13F MARATHON PETE COM 56585A102 1,850 -510 -21.61 258 -32.81 0.0193
2024-11-14 2024-09-30 13F MARATHON PETE COM 56585A102 2,360 352 17.53 384 10.34 0.0291
2024-08-09 2024-06-30 13F MARATHON PETE COM 56585A102 2,008 -10 -0.50 348 -14.29 0.0303
2024-05-10 2024-03-31 13F MARATHON PETE COM 56585A102 2,018 -612 -23.27 407 4.10 0.0376
2024-02-14 2023-12-31 13F MARATHON PETE COM 56585A102 2,630 73 2.85 390 0.78 0.0400
2023-11-13 2023-09-30 13F MARATHON PETE COM 56585A102 2,557 1 0.04 387 30.30 0.0438
2023-08-08 2023-06-30 13F MARATHON PETE COM 56585A102 2,556 -1,760 -40.78 298 -48.88 0.0333
2023-05-05 2023-03-31 13F MARATHON PETE COM 56585A102 4,316 119 2.84 582 19.06 0.0691
2023-02-13 2022-12-31 13F MARATHON PETE COM 56585A102 4,197 1,098 35.43 488 58.44 0.0611
2022-11-09 2022-09-30 13F MARATHON PETE COM 56585A102 3,099 3,099 308 0.0422
2022-02-14 2021-12-31 13F MARATHON PETE COM 56585A102 0 -465 -100.00 0 -100.00
2021-11-15 2021-09-30 13F MARATHON PETE COM 56585A102 465 3 0.65 29 3.57 0.0037
2021-08-12 2021-06-30 13F MARATHON PETE COM 56585A102 462 262 131.00 28 154.55 0.0037
2021-05-11 2021-03-31 13F MARATHON PETE COM 56585A102 200 -300 -60.00 11 -47.62 0.0016
2021-02-08 2020-12-31 13F MARATHON PETE COM 56585A102 500 -7 -1.38 21 40.00 0.0033
2020-10-30 2020-09-30 13F MARATHON PETE COM 56585A102 507 -140 -21.64 15 -37.50 0.0026
2020-08-04 2020-06-30 13F/A-1 MARATHON PETE COM 56585A102 647 -96 -12.92 24 33.33 0.0045
2020-07-27 2020-06-30 13F MARATHON PETE COM 56585A102 67 -676 24 4,486.9710
2020-04-24 2020-03-31 13F MARATHON PETE COM 56585A102 743 2 0.27 18 -60.00 0.0039
2020-02-03 2019-12-31 13F MARATHON PETE COM 56585A102 741 -199 -21.17 45 -21.05 0.0082
2019-11-12 2019-09-30 13F MARATHON PETE COM 56585A102 940 1 0.11 57 9.62 0.0113
2019-08-07 2019-06-30 13F MARATHON PETE COM 56585A102 939 1 0.11 52 -7.14 0.0106
2019-05-13 2019-03-31 13F MARATHON PETE COM 56585A102 938 -89 -8.67 56 -8.20 0.0143
2019-02-11 2018-12-31 13F MARATHON PETE COM 56585A102 1,027 180 21.25 61 -10.29 0.0167
2018-11-14 2018-09-30 13F MARATHON PETE COM 56585A102 847 0 0.00 68 15.25 0.0182
2018-08-14 2018-06-30 13F MARATHON PETE COM 56585A102 847 0 0.00 59 -3.28 0.0171
2018-05-03 2018-03-31 13F MARATHON PETE COM 56585A102 847 -193 -18.56 61 -15.28 0.0183
2018-02-05 2017-12-31 13F MARATHON PETE COM 56585A102 1,040 -800 -43.48 72 -30.10 0.0233
2017-11-02 2017-09-30 13F MARATHON PETE COM 56585A102 1,840 0 0.00 103 3.00 0.0349
2017-08-10 2017-06-30 13F MARATHON PETE COM 56585A102 1,840 -500 -21.37 100 -13.79 0.0387
2017-05-26 2017-03-31 13F MARATHON PETE COM 56585A102 2,340 570 32.20 116 31.82 0.0594
2017-02-08 2016-12-31 13F MARATHON PETE COM 56585A102 1,770 -640 -26.56 88 -12.00 0.0537
2016-11-14 2016-09-30 13F MARATHON PETE COM 56585A102 2,410 570 30.98 100 49.25 0.0473
2016-11-14 2016-06-30 13F MARATHON PETE COM 56585A102 1,840 1,840 67 0.0335
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.