Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionFirst Heartland Consultants, Inc.
Latest Disclosed Ownership1,701 shares
Latest Disclosed Value $ 415,402
First Heartland Consultants, Inc. reports 21.43% decrease in ownership of MPC / Marathon Petroleum Corporation

On April 8, 2026 - First Heartland Consultants, Inc. filed a 13F-HR form disclosing ownership of 1,701 shares of Marathon Petroleum Corporation (MX:MPC) valued at $415,402 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 2,165 shares of Marathon Petroleum Corporation. This represents a change in shares of -21.43% 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)
2026-04-08 2026-03-31 13F MARATHON PETE COM 56585A102 1,701 -464 -21.43 415 17.90 0.0318
2026-01-09 2025-12-31 13F MARATHON PETE COM 56585A102 2,165 -53 -2.39 352 -17.56 0.0267
2025-11-10 2025-09-30 13F MARATHON PETE COM 56585A102 2,218 -299 -11.88 427 2.15 0.0345
2025-08-15 2025-06-30 13F MARATHON PETE COM 56585A102 2,517 317 14.41 418 30.63 0.0372
2025-05-07 2025-03-31 13F MARATHON PETE COM 56585A102 2,200 -454 -17.11 321 -13.51 0.0331
2025-02-18 2024-12-31 13F MARATHON PETE COM 56585A102 2,654 17 0.64 370 0.0380
2024-11-05 2024-09-30 13F MARATHON PETE COM 56585A102 2,637 0 0.00 0 0.0462
2024-07-25 2024-06-30 13F MARATHON PETE COM 56585A102 2,637 44 1.70 0 0.0320
2024-05-07 2024-03-31 13F MARATHON PETE COM 56585A102 2,593 -114 -4.21 1 0.0543
2024-02-08 2023-12-31 13F MARATHON PETE COM 56585A102 2,707 4 0.15 0 0.0485
2023-11-09 2023-09-30 13F MARATHON PETE COM 56585A102 2,703 -52 -1.89 0 -100.00 0.0515
2023-07-26 2023-06-30 13F MARATHON PETE COM 56585A102 2,755 27 0.99 321 -12.53 0.0416
2023-04-17 2023-03-31 13F MARATHON PETE COM 56585A102 2,728 -1,797 -39.71 368 -30.23 0.0553
2023-01-13 2022-12-31 13F MARATHON PETE COM 56585A102 4,525 614 15.70 527 35.57 0.0848
2022-10-20 2022-09-30 13F MARATHON PETE COM 56585A102 3,911 -92 -2.30 388 17.93 0.0333
2022-07-12 2022-06-30 13F MARATHON PETE COM 56585A102 4,003 3 0.07 329 -3.80 0.0515
2022-04-21 2022-03-31 13F MARATHON PETE COM 56585A102 4,000 -86 -2.10 342 31.03 0.0530
2022-02-11 2021-12-31 13F MARATHON PETE COM 56585A102 4,086 5 0.12 261 3.57 0.0099
2021-11-15 2021-09-30 13F MARATHON PETE COM 56585A102 4,081 6 0.15 252 2.44 0.0383
2021-08-16 2021-06-30 13F MARATHON PETE COM 56585A102 4,075 -1,227 -23.14 246 -13.38 0.0373
2021-05-17 2021-03-31 13F MARATHON PETE COM 56585A102 5,302 -560 -9.55 284 17.36 0.0451
2021-01-29 2020-12-31 13F MARATHON PETE COM 56585A102 5,862 5,862 242 0.0402
2020-10-21 2020-09-30 13F MARATHON PETE COM 56585A102 0 -5,783 -100.00 0 -100.00
2020-07-16 2020-06-30 13F MARATHON PETE COM 56585A102 5,783 -13,071 -69.33 216 -51.46 0.0426
2020-05-14 2020-03-31 13F MARATHON PETE COM 56585A102 18,854 8,240 77.63 445 -30.36 0.1146
2020-02-13 2019-12-31 13F MARATHON PETE COM 56585A102 10,614 -5,200 -32.88 639 -33.51 0.1258
2019-11-18 2019-09-30 13F MARATHON PETE COM 56585A102 15,814 -814 -4.90 961 3.44 0.2063
2019-08-12 2019-06-30 13F MARATHON PETE COM 56585A102 16,628 734 4.62 929 -2.31 0.2232
2019-05-15 2019-03-31 13F MARATHON PETE COM 56585A102 15,894 229 1.46 951 2.92 0.2665
2019-02-12 2018-12-31 13F MARATHON PETE COM 56585A102 15,665 12,404 380.37 924 254.02 0.3450
2018-11-15 2018-09-30 13F MARATHON PETE COM 56585A102 3,261 -195 -5.64 261 7.85 0.0817
2018-08-09 2018-06-30 13F MARATHON PETE COM 56585A102 3,456 -321 -8.50 242 -12.32 0.0853
2018-05-15 2018-03-31 13F MARATHON PETE COM 56585A102 3,777 154 4.25 276 15.48 0.0827
2018-02-26 2017-12-31 13F MARATHON PETE COM 56585A102 3,623 -29 -0.79 239 16.59 0.0719
2017-11-15 2017-09-30 13F MARATHON PETE COM 56585A102 3,652 3,652 205 0.0499
2017-07-26 2017-06-30 13F MARATHON PETE COM 56585A102 0 -4,376 -100.00 0 -100.00
2017-05-12 2017-03-31 13F MARATHON PETE COM 56585A102 4,376 4,376 221 0.0617
2016-05-10 2016-03-31 13F MARATHON PETE COM 56585A102 0 -4,447 -100.00 0 -100.00
2016-02-05 2015-12-31 13F MARATHON PETE COM 56585A102 4,447 4,447 0.00 231 0.0877
2015-02-02 2014-12-31 13F MARATHON PETE COM 56585A102 0 -4,822 -100.00 0 -100.00
2014-11-13 2014-09-30 13F MARATHON PETE COM 56585A102 4,822 -1,040 -17.74 408 -10.92 0.1795
2014-07-16 2014-06-30 13F MARATHON PETE COM 56585A102 5,862 0 0.00 458 -10.20 0.2070
2014-04-30 2014-03-31 13F MARATHON PETE COM 56585A102 5,862 0 0.00 510 -5.20 0.2511
2014-02-14 2013-12-31 13F MARATHON PETE COM 56585A102 5,862 1 0.02 538 42.71 0.3028
2013-11-14 2013-09-30 13F MARATHON PETE COM 56585A102 5,861 -40 -0.68 377 -10.02 0.2278
2013-08-13 2013-06-30 13F MARATHON PETE COM 56585A102 5,901 5,901 419 0.2433
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.