Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionSeacrest Wealth Management, Llc
Latest Disclosed Ownership5,805 shares
Latest Disclosed Value $ 1,417,465
Seacrest Wealth Management, Llc reports 59.04% increase in ownership of MPC / Marathon Petroleum Corporation

On April 15, 2026 - Seacrest Wealth Management, Llc filed a 13F-HR form disclosing ownership of 5,805 shares of Marathon Petroleum Corporation (MX:MPC) valued at $1,417,465 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 12, 2026 disclosing 3,650 shares of Marathon Petroleum Corporation. This represents a change in shares of 59.04% 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)
2026-04-15 2026-03-31 13F MARATHON PETE COM 56585A102 5,805 2,155 59.04 1,417 125.28 0.1516
2026-01-12 2025-12-31 13F MARATHON PETE COM 56585A102 3,650 -124 -3.29 630 -11.66 0.0637
2025-11-13 2025-09-30 13F MARATHON PETE COM 56585A102 3,774 -407 -9.73 712 2.59 0.0751
2025-07-11 2025-06-30 13F MARATHON PETE COM 56585A102 4,181 -88 -2.06 695 11.76 0.0754
2025-04-11 2025-03-31 13F MARATHON PETE COM 56585A102 4,269 -7 -0.16 622 4.19 0.0704
2025-01-14 2024-12-31 13F MARATHON PETE COM 56585A102 4,276 -40 -0.93 597 -15.22 0.0627
2024-10-16 2024-09-30 13F MARATHON PETE COM 56585A102 4,316 -4 -0.09 703 -6.14 0.0757
2024-07-22 2024-06-30 13F MARATHON PETE COM 56585A102 4,320 63 1.48 749 -12.60 0.0853
2024-04-18 2024-03-31 13F MARATHON PETE COM 56585A102 4,257 -546 -11.37 858 17.08 0.1049
2024-01-18 2023-12-31 13F MARATHON PETE COM 56585A102 4,803 -679 -12.39 732 -11.70 0.0905
2023-10-12 2023-09-30 13F MARATHON PETE COM 56585A102 5,482 -155 -2.75 830 26.18 0.1078
2023-07-14 2023-06-30 13F MARATHON PETE COM 56585A102 5,637 -1,727 -23.45 657 -33.77 0.0830
2023-05-12 2023-03-31 13F MARATHON PETE COM 56585A102 7,364 -260 -3.41 993 11.84 0.1345
2023-02-14 2022-12-31 13F MARATHON PETE COM 56585A102 7,624 279 3.80 887 21.51 0.1273
2022-11-15 2022-09-30 13F MARATHON PETE COM 56585A102 7,345 -7 -0.10 730 20.86 0.1108
2022-08-09 2022-06-30 13F MARATHON PETE COM 56585A102 7,352 -28 -0.38 604 -4.28 0.0760
2022-05-16 2022-03-31 13F MARATHON PETE COM 56585A102 7,380 180 2.50 631 36.88 0.0725
2022-02-11 2021-12-31 13F MARATHON PETE COM 56585A102 7,200 131 1.85 461 5.49 0.0506
2021-11-16 2021-09-30 13F MARATHON PETE COM 56585A102 7,069 310 4.59 437 7.11 0.0527
2021-08-12 2021-06-30 13F MARATHON PETE COM 56585A102 6,759 -190 -2.73 408 9.68 0.0492
2021-05-17 2021-03-31 13F MARATHON PETE COM 56585A102 6,949 81 1.18 372 30.99 0.0493
2021-02-09 2020-12-31 13F MARATHON PETE COM 56585A102 6,868 6,868 284 0.0399
2020-11-12 2020-09-30 13F MARATHON PETE COM 56585A102 0 -7,164 -100.00 0 -100.00
2020-07-27 2020-06-30 13F MARATHON PETE COM 56585A102 7,164 7,164 268 0.0463
2020-05-12 2020-03-31 13F MARATHON PETE COM 56585A102 0 -7,008 -100.00 0 -100.00
2020-01-22 2019-12-31 13F MARATHON PETE COM 56585A102 7,008 2,143 44.05 422 42.57 0.0707
2019-10-15 2019-09-30 13F MARATHON PETE COM 56585A102 4,865 491 11.23 296 21.31 0.0554
2019-07-19 2019-06-30 13F MARATHON PETE COM 56585A102 4,374 60 1.39 244 -5.43 0.0497
2019-05-10 2019-03-31 13F MARATHON PETE COM 56585A102 4,314 603 16.25 258 17.81 0.0443
2019-02-13 2018-12-31 13F MARATHON PETE COM 56585A102 3,711 288 8.41 219 -20.07 0.0451
2018-11-14 2018-09-30 13F MARATHON PETE COM 56585A102 3,423 45 1.33 274 15.61 0.0464
2018-08-03 2018-06-30 13F MARATHON PETE COM 56585A102 3,378 -586 -14.78 237 -18.28 0.0427
2018-04-20 2018-03-31 13F MARATHON PETE COM 56585A102 3,964 108 2.80 290 14.17 0.0532
2018-02-02 2017-12-31 13F MARATHON PETE COM 56585A102 3,856 3,856 254 0.0464
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.