Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionBrookstone Capital Management
Latest Disclosed Ownership7,617 shares
Latest Disclosed Value $ 1,859,945
Brookstone Capital Management reports 3.18% decrease in ownership of MPC / Marathon Petroleum Corporation

On April 16, 2026 - Brookstone Capital Management filed a 13F-HR form disclosing ownership of 7,617 shares of Marathon Petroleum Corporation (MX:MPC) valued at $1,859,945 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 15, 2026 disclosing 7,867 shares of Marathon Petroleum Corporation. This represents a change in shares of -3.18% 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)
2026-04-16 2026-03-31 13F MARATHON PETE COM 56585A102 7,617 -250 -3.18 1,860 45.35 0.0213
2026-01-15 2025-12-31 13F MARATHON PETE COM 56585A102 7,867 120 1.55 1,279 -14.33 0.0146
2025-10-15 2025-09-30 13F MARATHON PETE COM 56585A102 7,747 -2,940 -27.51 1,493 -15.89 0.0178
2025-07-30 2025-06-30 13F MARATHON PETE COM 56585A102 10,687 1,617 17.83 1,775 34.37 0.0233
2025-04-29 2025-03-31 13F MARATHON PETE COM 56585A102 9,070 -53,315 -85.46 1,321 -84.82 0.0189
2025-01-13 2024-12-31 13F MARATHON PETE COM 56585A102 62,385 25,171 67.64 8,703 43.55 0.1267
2024-10-08 2024-09-30 13F MARATHON PETE COM 56585A102 37,214 8,978 31.80 6,063 29.70 0.0894
2024-07-18 2024-06-30 13F MARATHON PETE COM 56585A102 28,236 7,086 33.50 4,675 9.69 0.0775
2024-04-15 2024-03-31 13F MARATHON PETE COM 56585A102 21,150 4,947 30.53 4,262 77.32 0.0762
2024-01-11 2023-12-31 13F MARATHON PETE COM 56585A102 16,203 4,350 36.70 2,404 32.69 0.0467
2023-10-20 2023-09-30 13F MARATHON PETE COM 56585A102 11,853 8,131 218.46 1,812 312.53 0.0398
2023-07-11 2023-06-30 13F MARATHON PETE COM 56585A102 3,722 -6,604 -63.96 439 -67.12 0.0088
2023-04-19 2023-03-31 13F MARATHON PETE COM 56585A102 10,326 -1,354 -11.59 1,335 -2.13 0.0260
2023-01-09 2022-12-31 13F MARATHON PETE COM 56585A102 11,680 1,025 9.62 1,365 22.00 0.0276
2022-10-14 2022-09-30 13F MARATHON PETE COM 56585A102 10,655 7,921 289.72 1,118 390.35 0.0258
2022-07-11 2022-06-30 13F MARATHON PETE COM 56585A102 2,734 5 0.18 228 -1.72 0.0050
2022-04-12 2022-03-31 13F MARATHON PETE COM 56585A102 2,729 2,729 232 0.0045
2022-01-10 2021-12-31 13F MARATHON PETE COM 56585A102 0 -4,032 -100.00 0 -100.00
2021-11-03 2021-09-30 13F MARATHON PETE COM 56585A102 4,032 4,032 263 0.0047
2021-01-13 2020-12-31 13F MARATHON PETE COM 56585A102 0 -7,962 -100.00 0 -100.00
2020-10-13 2020-09-30 13F MARATHON PETE COM 56585A102 7,962 7,962 234 0.0108
2020-07-21 2020-06-30 13F MARATHON PETE COM 56585A102 0 -8,862 -100.00 0 -100.00
2020-04-14 2020-03-31 13F MARATHON PETE COM 56585A102 8,862 -7,671 -46.40 209 -79.02 0.0120
2020-01-29 2019-12-31 13F MARATHON PETE COM 56585A102 16,533 12,505 310.45 996 306.53 0.0506
2019-10-18 2019-09-30 13F MARATHON PETE COM 56585A102 4,028 350 9.52 245 18.93 0.0133
2019-07-25 2019-06-30 13F MARATHON PETE COM 56585A102 3,678 3,678 206 0.0119
2016-04-14 2016-03-31 13F MARATHON PETE CORP COM COM 56585A102 0 0 0 0.0000
2016-01-14 2015-12-31 13F MARATHON PETE CORP COM COM 56585A102 0 -1,064 -100.00 0 -100.00
2015-10-28 2015-09-30 13F MARATHON PETE CORP COM COM 56585A102 1,064 348 48.60 49 32.43 0.0089
2015-08-11 2015-06-30 13F MARATHON PETE CORP COM COM 56585A102 716 716 37 0.0047
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.