Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionWarren Averett Asset Management, LLC
Latest Disclosed Ownership25,154 shares
Latest Disclosed Value $ 6,141,954
Warren Averett Asset Management, LLC reports 9.77% increase in ownership of MPC / Marathon Petroleum Corporation

On May 15, 2026 - Warren Averett Asset Management, LLC filed a 13F-HR form disclosing ownership of 25,154 shares of Marathon Petroleum Corporation (MX:MPC) valued at $6,141,954 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 22,915 shares of Marathon Petroleum Corporation. This represents a change in shares of 9.77% 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 25,154 2,239 9.77 6,142 64.81 0.0435
2026-02-17 2025-12-31 13F MARATHON PETE COM 56585A102 22,915 1,714 8.08 3,727 -8.81 0.0302
2025-11-14 2025-09-30 13F MARATHON PETE COM 56585A102 21,201 153 0.73 4,086 16.88 0.0407
2025-08-14 2025-06-30 13F MARATHON PETE COM 56585A102 21,048 192 0.92 3,496 15.08 0.0384
2025-05-15 2025-03-31 13F MARATHON PETE COM 56585A102 20,856 821 4.10 3,039 8.73 0.0371
2025-02-14 2024-12-31 13F MARATHON PETE COM 56585A102 20,035 15,723 364.63 2,795 298.01 0.0432
2024-11-14 2024-09-30 13F MARATHON PETE COM 56585A102 4,312 1,003 30.31 702 22.51 0.0130
2024-08-14 2024-06-30 13F MARATHON PETE COM 56585A102 3,309 42 1.29 574 -12.92 0.0113
2024-05-15 2024-03-31 13F MARATHON PETE COM 56585A102 3,267 -414 -11.25 658 20.51 0.0155
2024-02-14 2023-12-31 13F MARATHON PETE COM 56585A102 3,681 1,956 113.39 546 109.20 0.0205
2023-11-14 2023-09-30 13F MARATHON PETE COM 56585A102 1,725 1,725 261 0.0114
2019-02-12 2018-12-31 13F MARATHON PETE COM 56585A102 0 -11,532 -100.00 0 -100.00
2018-11-02 2018-09-30 13F MARATHON PETE COM 56585A102 11,532 0 0.00 922 13.97 0.1361
2018-08-02 2018-06-30 13F MARATHON PETE COM 56585A102 11,532 0 0.00 809 -4.03 0.1259
2018-05-04 2018-03-31 13F MARATHON PETE COM 56585A102 11,532 -791 -6.42 843 3.69 0.1363
2018-02-09 2017-12-31 13F MARATHON PETE COM 56585A102 12,323 0 0.00 813 17.66 0.1160
2017-10-30 2017-09-30 13F MARATHON PETE COM 56585A102 12,323 -30 -0.24 691 6.97 0.1498
2017-07-27 2017-06-30 13F MARATHON PETE COM 56585A102 12,353 40 0.32 646 3.86 0.1622
2017-05-05 2017-03-31 13F MARATHON PETE COM 56585A102 12,313 12,313 622 0.1639
2016-04-20 2016-03-31 13F MARATHON PETE COM 56585A102 0 0 0 0.0000
2016-02-08 2015-12-31 13F MARATHON PETE COM 56585A102 0 -1,258 -100.00 0 -100.00
2015-11-02 2015-09-30 13F MARATHON PETE COM 56585A102 1,258 628 99.68 58 75.76 0.0400
2015-08-10 2015-06-30 13F MARATHON PETE COM 56585A102 630 379 151.00 33 43.48 0.0203
2014-01-27 2013-12-31 13F MARATHON PETE COM 56585A102 251 0 0.00 23 43.75 0.0081
2013-10-23 2013-09-30 13F MARATHON PETE COM 56585A102 251 251 16 0.0082
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.