Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionAptus Capital Advisors, LLC
Latest Disclosed Ownership11,712 shares
Latest Disclosed Value $ 2,859,836
Aptus Capital Advisors, LLC reports 0.14% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 11, 2026 - Aptus Capital Advisors, LLC filed a 13F-HR form disclosing ownership of 11,712 shares of Marathon Petroleum Corporation (MX:MPC) valued at $2,859,836 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 11,729 shares of Marathon Petroleum Corporation. This represents a change in shares of -0.14% 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)
2026-05-11 2026-03-31 13F MARATHON PETE COM 56585A102 11,712 -17 -0.14 2,860 49.92 0.0225
2026-02-13 2025-12-31 13F MARATHON PETE COM 56585A102 11,729 811 7.43 1,907 -9.36 0.0137
2025-11-12 2025-09-30 13F MARATHON PETE COM 56585A102 10,918 -1,696 -13.45 2,104 0.43 0.0153
2025-08-11 2025-06-30 13F MARATHON PETE COM 56585A102 12,614 2,438 23.96 2,095 41.36 0.0171
2025-05-13 2025-03-31 13F MARATHON PETE COM 56585A102 10,176 -379 -3.59 1,483 0.68 0.0153
2025-02-14 2024-12-31 13F MARATHON PETE COM 56585A102 10,555 4,340 69.83 1,472 45.45 0.0154
2024-11-05 2024-09-30 13F MARATHON PETE COM 56585A102 6,215 -2,173 -25.91 1,012 -30.45 0.0151
2024-07-31 2024-06-30 13F MARATHON PETE COM 56585A102 8,388 228 2.79 1,455 -11.50 0.0256
2024-05-15 2024-03-31 13F MARATHON PETE COM 56585A102 8,160 765 10.34 1,644 49.86 0.0306
2024-02-13 2023-12-31 13F MARATHON PETE COM 56585A102 7,395 -164 -2.17 1,097 -4.02 0.0300
2023-11-08 2023-09-30 13F MARATHON PETE COM 56585A102 7,559 1,797 31.19 1,144 70.34 0.0312
2023-08-11 2023-06-30 13F MARATHON PETE COM 56585A102 5,762 -296 -4.89 672 -17.77 0.0161
2023-05-09 2023-03-31 13F MARATHON PETE COM 56585A102 6,058 40 0.66 817 16.57 0.0219
2023-02-13 2022-12-31 13F MARATHON PETE COM 56585A102 6,018 10 0.17 700 17.25 0.0215
2022-11-02 2022-09-30 13F MARATHON PETE COM 56585A102 6,008 842 16.30 597 40.47 0.0144
2022-07-29 2022-06-30 13F MARATHON PETE COM 56585A102 5,166 742 16.77 425 12.43 0.0111
2022-05-04 2022-03-31 13F MARATHON PETE COM 56585A102 4,424 4,424 378 0.0094
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.