Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionPrivate Trust Co Na
Latest Disclosed Ownership2,920 shares
Latest Disclosed Value $ 713,006
Private Trust Co Na reports 5.96% decrease in ownership of MPC / Marathon Petroleum Corporation

On April 30, 2026 - Private Trust Co Na filed a 13F-HR form disclosing ownership of 2,920 shares of Marathon Petroleum Corporation (MX:MPC) valued at $713,006 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 3,105 shares of Marathon Petroleum Corporation. This represents a change in shares of -5.96% 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)
2026-04-30 2026-03-31 13F Marathon Petroleum Com 56585A102 2,920 -185 -5.96 713 41.47 0.0637
2026-01-26 2025-12-31 13F Marathon Petroleum Com 56585A102 3,105 262 9.22 505 -7.86 0.0442
2025-10-15 2025-09-30 13F Marathon Petroleum Com 56585A102 2,843 -1 -0.04 548 15.89 0.0483
2025-07-29 2025-06-30 13F Marathon Petroleum Com 56585A102 2,844 -441 -13.42 472 -1.26 0.0450
2025-04-28 2025-03-31 13F Marathon Petroleum Com 56585A102 3,285 96 3.01 479 7.66 0.0492
2025-02-05 2024-12-31 13F Marathon Petroleum Com 56585A102 3,189 -2,038 -38.99 445 -47.83 0.0457
2024-11-13 2024-09-30 13F Marathon Petroleum Com 56585A102 5,227 53 1.02 852 -5.13 0.0858
2024-07-23 2024-06-30 13F Marathon Petroleum Com 56585A102 5,174 -9 -0.17 898 -14.08 0.0967
2024-04-24 2024-03-31 13F Marathon Petroleum Com 56585A102 5,183 85 1.67 1,044 38.10 0.1128
2024-01-24 2023-12-31 13F Marathon Petroleum Com 56585A102 5,098 -64 -1.24 756 -3.20 0.0889
2023-10-18 2023-09-30 13F Marathon Petroleum Com 56585A102 5,162 -627 -10.83 781 15.88 0.1031
2023-07-28 2023-06-30 13F Marathon Petroleum Com 56585A102 5,789 366 6.75 675 -7.80 0.0851
2023-04-12 2023-03-31 13F Marathon Petroleum Com 56585A102 5,423 -415 -7.11 731 0.0997
2023-01-18 2022-12-31 13F Marathon Petroleum Com 56585A102 5,838 -237 -3.90 1 -100.00 0.1008
2022-10-17 2022-09-30 13F Marathon Petroleum Com 56585A102 6,075 -232 -3.68 603 16.41 0.0979
2022-09-16 2022-06-30 13F/A-1 Marathon Petroleum Com 56585A102 6,307 -1,881 -22.97 518 -26.00 0.0804
2022-07-13 2022-06-30 13F Marathon Petroleum Equities 56585A102 8,188 0 700 0.1093
2022-04-12 2022-03-31 13F Marathon Petroleum Equities 56585A102 8,188 99 1.22 700 35.14 0.1093
2022-01-10 2021-12-31 13F Marathon Petroleum Equities 56585A102 8,089 382 4.96 518 8.82 0.0715
2021-10-06 2021-09-30 13F Marathon Petroleum Equities 56585A102 7,707 -14 -0.18 476 2.15 0.0693
2021-07-07 2021-06-30 13F Marathon Petroleum Equities 56585A102 7,721 84 1.10 466 14.22 0.0706
2021-04-06 2021-03-31 13F Marathon Petroleum Equities 56585A102 7,637 7,637 408 0.0663
2018-10-09 2018-09-30 13F Marathon Petroleum Equities 56585A102 0 -2,932 -100.00 0 -100.00
2018-07-03 2018-06-30 13F Marathon Petroleum Equities 56585A102 2,932 -125 -4.09 205 -8.07 0.0444
2018-04-03 2018-03-31 13F Marathon Petroleum Equities 56585A102 3,057 3,057 223 0.0487
2015-01-28 2014-12-31 13F Marathon Petroleum Com 56585A102 0 -23 -100.00 0 -100.00
2014-10-09 2014-09-30 13F Marathon Petroleum Com 56585A102 23 -402 -94.59 2 -93.94 0.0007
2014-07-22 2014-06-30 13F Marathon Petroleum Com 56585A102 425 40 10.39 33 -2.94 0.0107
2014-04-07 2014-03-31 13F Marathon Petroleum Com 56585A102 385 -20 -4.94 34 -8.11 0.0128
2014-01-08 2013-12-31 13F Marathon Petroleum Com 56585A102 405 21 5.47 37 48.00 0.0149
2013-10-07 2013-09-30 13F Marathon Petroleum Com 56585A102 384 271 239.82 25 212.50 0.0113
2013-08-01 2013-06-30 13F Marathon Petroleum Com 56585A102 113 0 0.00 8 0.00 0.0037
2013-07-26 2013-03-31 13F Marathon Petroleum Com 56585A102 113 113 8 0.0037
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.