Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionRehmann Capital Advisory Group
Latest Disclosed Ownership4,638 shares
Latest Disclosed Value $ 1,132,626
Rehmann Capital Advisory Group reports 30.69% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 15, 2026 - Rehmann Capital Advisory Group filed a 13F-HR form disclosing ownership of 4,638 shares of Marathon Petroleum Corporation (MX:MPC) valued at $1,132,626 USD as of March 31, 2026. The entity filed a previous 13F-HR on March 4, 2026 disclosing 6,692 shares of Marathon Petroleum Corporation. This represents a change in shares of -30.69% 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 4,638 -2,054 -30.69 1,133 4.04 0.0590
2026-03-04 2025-12-31 13F MARATHON PETE COM 56585A102 6,692 958 16.71 1,088 -1.54 0.0567
2025-11-13 2025-09-30 13F MARATHON PETE COM 56585A102 5,734 -2,102 -26.82 1,105 -15.07 0.0605
2025-07-30 2025-06-30 13F MARATHON PETE COM 56585A102 7,836 -2,239 -22.22 1,302 -11.32 0.0788
2025-04-30 2025-03-31 13F MARATHON PETE COM 56585A102 10,075 -2,970 -22.77 1,468 -19.35 0.0924
2025-02-14 2024-12-31 13F MARATHON PETE COM 56585A102 13,045 7,251 125.15 1,820 92.69 0.1153
2024-11-18 2024-09-30 13F MARATHON PETE COM 56585A102 5,794 39 0.68 944 -5.41 0.0617
2024-08-12 2024-06-30 13F MARATHON PETE COM 56585A102 5,755 2,080 56.60 998 34.86 0.0715
2024-05-03 2024-03-31 13F MARATHON PETE COM 56585A102 3,675 -213 -5.48 741 28.47 0.0552
2024-02-13 2023-12-31 13F MARATHON PETE COM 56585A102 3,888 -18 -0.46 577 -2.54 0.0478
2023-11-14 2023-09-30 13F MARATHON PETE COM 56585A102 3,906 182 4.89 591 36.18 0.0551
2023-08-23 2023-06-30 13F/A-1 MARATHONPETECORP COM 56585A102 3,724 -239 -6.03 434 -18.73 0.0389
2023-08-15 2023-06-30 13F MARATHON PETE COM 56585A102 3,963 0 534 0.0503
2023-05-12 2023-03-31 13F MARATHON PETE COM 56585A102 3,963 -933 -19.06 534 -6.15 0.0503
2023-02-10 2022-12-31 13F MARATHON PETE COM 56585A102 4,896 -100 -2.00 570 14.72 0.0584
2022-11-14 2022-09-30 13F MARATHON PETE COM 56585A102 4,996 -12 -0.24 496 20.68 0.0550
2022-08-12 2022-06-30 13F MARATHON PETE COM 56585A102 5,008 167 3.45 412 -0.48 0.0453
2022-06-03 2022-03-31 13F MARATHON PETE COM 56585A102 4,841 -36 -0.74 414 32.37 0.0393
2022-03-02 2021-12-31 13F MARATHON PETE MPC 56585A102 4,877 6 0.12 312 3.65 0.0290
2021-11-16 2021-09-30 13F MARATHON PETE COM 56585A102 4,871 -599 -10.95 301 -8.79 0.0285
2021-08-13 2021-06-30 13F MARATHON PETE COM 56585A102 5,470 -499 -8.36 331 3.45 0.0320
2021-05-26 2021-03-31 13F MARATHON PETE COM 56585A102 5,969 5,969 319 0.0326
2020-11-19 2020-09-30 13F MARATHON PETE COM 56585A102 0 -6,068 -100.00 0 -100.00
2020-11-20 2020-06-30 13F/A-1 MARATHON PETE COM 56585A102 6,068 -2,711 -30.88 227 9.18 0.0310
2020-11-20 2020-03-31 13F/A-1 MARATHON PETE COM 56585A102 8,779 -7,016 -44.42 207 -78.42 0.0338
2020-01-02 2019-09-30 13F MARATHON PETE COM 56585A102 15,795 9,690 158.72 960 181.23 0.1161
2019-08-27 2019-06-30 13F MARATHON PETE COM 56585A102 6,105 -1,085 -15.09 341 -20.70 0.0420
2019-05-22 2019-03-31 13F MARATHON PETE COM 56585A102 7,190 -1,762 -19.68 430 -18.56 0.0583
2019-02-12 2018-12-31 13F MARATHON PETE COM 56585A102 8,952 -1,178 -11.63 528 -34.81 0.0793
2018-12-07 2018-09-30 13F/A-1 MARATHONPETECORP COM 56585A102 10,130 495 5.14 810 19.82 0.1117
2018-11-20 2018-09-30 13F MARATHONPETECORP COM 56585A102 810,102 800,467 10
2018-09-20 2018-06-30 13F MARATHON PETE COM 56585A102 9,635 390 4.22 676 0.00 0.0981
2018-04-24 2018-03-31 13F MARATHON PETE COM 56585A102 9,245 2,654 40.27 676 55.40 0.1052
2018-02-22 2017-12-31 13F MARATHON PETE COM 56585A102 6,591 27 0.41 435 18.21 0.0734
2017-10-25 2017-09-30 13F MARATHON PETE COM 56585A102 6,564 208 3.27 368 10.51 0.0663
2017-07-19 2017-06-30 13F MARATHON PETE COM 56585A102 6,356 93 1.48 333 5.05 0.0636
2017-04-24 2017-03-31 13F MARATHON PETE COM 56585A102 6,263 -516 -7.61 317 -7.04 0.0529
2017-02-13 2016-12-31 13F MARATHON PETE COM 56585A102 6,779 656 10.71 341 36.95 0.0624
2016-10-26 2016-09-30 13F MARATHON PETE COM 56585A102 6,123 -1,165 -15.99 249 -10.11 0.0482
2016-07-25 2016-06-30 13F MARATHON PETE COM 56585A102 7,288 98 1.36 277 3.75 0.0519
2016-05-09 2016-03-31 13F MARATHON PETE COM 56585A102 7,190 -1,645 -18.62 267 -41.70 0.0520
2016-02-11 2015-12-31 13F MARATHON PETE COM 56585A102 8,835 -36 -0.41 458 11.44 0.0962
2015-11-12 2015-09-30 13F MARATHON PETE COM 56585A102 8,871 123 1.41 411 -10.26 0.0930
2015-07-08 2015-06-30 13F MARATHON PETE COM 56585A102 8,748 4,249 94.44 458 -0.65 0.1045
2015-04-14 2015-03-31 13F MARATHON PETE COM 56585A102 4,499 -254 -5.34 461 7.46 0.1046
2015-03-09 2014-12-31 13F/A-1 MARATHON PETE COM 56585A102 4,753 -1,622 -25.44 429 -20.56 0.0987
2015-09-01 2014-09-30 13F MARATHON PETE COM 56585A102 6,375 -785 -10.96 540 -3.40 0.1279
2015-09-01 2014-06-30 13F MARATHON PETE COM 56585A102 7,160 365 5.37 559 -5.41 0.1335
2015-08-31 2014-03-31 13F MARATHON PETE COM 56585A102 6,795 1,042 18.11 591 11.93 0.1597
2015-08-31 2013-12-31 13F MARATHON PETE COM 56585A102 5,753 298 5.46 528 50.43 0.1597
2015-08-31 2013-09-30 13F MARATHON PETE COM 56585A102 5,455 -982 -15.26 351 -23.19 0.1135
2015-08-31 2013-06-30 13F MARATHON PETE COM 56585A102 6,437 2,455 61.65 457 28.01 0.1586
2015-08-31 2013-03-31 13F MARATHON PETE COM 56585A102 3,982 787 24.63 357 77.61 0.1277
2015-08-31 2012-12-31 13F MARATHON PETE COM 56585A102 3,195 3,195 201 0.0801
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.