Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionMonetary Management Group Inc
Latest Disclosed Ownership775 shares
Latest Disclosed Value $ 189,239
Monetary Management Group Inc ownership in MPC / Marathon Petroleum Corporation

On May 13, 2026 - Monetary Management Group Inc filed a 13F-HR form disclosing ownership of 775 shares of Marathon Petroleum Corporation (MX:MPC) valued at $189,239 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 775 shares of Marathon Petroleum Corporation. This represents a change in shares of 0.00% 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)
2026-05-13 2026-03-31 13F Marathon Pete COM 56585A102 775 0 0.00 189 50.00 0.0452
2026-02-11 2025-12-31 13F Marathon Pete COM 56585A102 775 0 0.00 126 -15.44 0.0291
2025-11-12 2025-09-30 13F Marathon Pete COM 56585A102 775 -200 -20.51 149 -7.45 0.0343
2025-08-14 2025-06-30 13F Marathon Pete COM 56585A102 975 0 0.00 162 13.38 0.0399
2025-05-14 2025-03-31 13F Marathon Pete COM 56585A102 975 0 0.00 142 4.41 0.0384
2025-02-13 2024-12-31 13F Marathon Pete COM 56585A102 975 0 0.00 136 -13.92 0.0353
2024-11-13 2024-09-30 13F Marathon Pete COM 56585A102 975 275 39.29 159 30.58 0.0408
2024-07-16 2024-06-30 13F Marathon Pete COM 56585A102 700 0 0.00 121 -14.18 0.0321
2024-05-13 2024-03-31 13F Marathon Pete COM 56585A102 700 0 0.00 141 36.89 0.0393
2024-02-14 2023-12-31 13F Marathon Pete COM 56585A102 700 0 0.00 104 -1.90 0.0324
2023-11-09 2023-09-30 13F Marathon Pete COM 56585A102 700 0 0.00 106 29.63 0.0353
2023-08-11 2023-06-30 13F Marathon Pete COM 56585A102 700 0 0.00 82 -13.83 0.0250
2023-05-11 2023-03-31 13F Marathon Pete COM 56585A102 700 0 0.00 94 16.05 0.0278
2023-02-13 2022-12-31 13F Marathon Pete COM 56585A102 700 -300 -30.00 81 -18.18 0.0254
2022-11-14 2022-09-30 13F Marathon Pete COM 56585A102 1,000 0 0.00 99 20.73 0.0326
2022-08-11 2022-06-30 13F Marathon Pete COM 56585A102 1,000 0 0.00 82 -3.53 0.0257
2022-05-12 2022-03-31 13F Marathon Pete COM 56585A102 1,000 0 0.00 85 32.81 0.0225
2022-02-14 2021-12-31 13F Marathon Pete COM 56585A102 1,000 0 0.00 64 3.23 0.0158
2021-11-12 2021-09-30 13F Marathon Pete COM 56585A102 1,000 500 100.00 62 106.67 0.0170
2021-08-12 2021-06-30 13F Marathon Pete COM 56585A102 500 0 0.00 30 11.11 0.0090
2021-05-17 2021-03-31 13F Marathon Pete COM 56585A102 500 0 0.00 27 28.57 0.0085
2021-02-12 2020-12-31 13F Marathon Pete COM 56585A102 500 0 0.00 21 40.00 0.0069
2020-11-12 2020-09-30 13F Marathon Pete COM 56585A102 500 0 0.00 15 -21.05 0.0053
2020-08-13 2020-06-30 13F Marathon Pete COM 56585A102 500 0 0.00 19 58.33 0.0072
2020-05-14 2020-03-31 13F Marathon Pete COM 56585A102 500 0 0.00 12 -60.00 0.0053
2020-02-13 2019-12-31 13F Marathon Pete COM 56585A102 500 0 0.00 30 0.00 0.0110
2019-11-12 2019-09-30 13F Marathon Pete COM 56585A102 500 -200 -28.57 30 -23.08 0.0114
2019-08-13 2019-06-30 13F Marathon Pete COM 56585A102 700 0 0.00 39 -7.14 0.0150
2019-05-14 2019-03-31 13F Marathon Pete COM 56585A102 700 0 0.00 42 2.44 0.0166
2019-02-13 2018-12-31 13F Marathon Pete COM 56585A102 700 0 0.00 41 -26.79 0.0185
2018-11-13 2018-09-30 13F Marathon Pete COM 56585A102 700 0 0.00 56 14.29 0.0214
2018-08-13 2018-06-30 13F Marathon Pete COM 56585A102 700 0 0.00 49 -3.92 0.0200
2018-05-14 2018-03-31 13F Marathon Pete COM 56585A102 700 0 0.00 51 10.87 0.0211
2018-02-14 2017-12-31 13F Marathon Pete COM 56585A102 700 0 0.00 46 17.95 0.0185
2017-11-13 2017-09-30 13F Marathon Pete COM 56585A102 700 0 0.00 39 5.41 0.0164
2017-08-14 2017-06-30 13F Marathon Pete COM 56585A102 700 0 0.00 37 5.71 0.0151
2017-05-15 2017-03-31 13F Marathon Pete COM 56585A102 700 -200 -22.22 35 -22.22 0.0152
2017-02-13 2016-12-31 13F Marathon Pete COM 56585A102 900 0 0.00 45 21.62 0.0208
2016-11-10 2016-09-30 13F Marathon Pete COM 56585A102 900 0 0.00 37 8.82 0.0171
2016-08-12 2016-06-30 13F Marathon Pete COM 56585A102 900 300 50.00 34 54.55 0.0158
2016-05-11 2016-03-31 13F Marathon Pete COM 56585A102 600 -100 -14.29 22 -38.89 0.0107
2016-02-11 2015-12-31 13F Marathon Pete COM 56585A102 700 100 16.67 36 28.57 0.0172
2015-11-25 2015-09-30 13F Marathon Pete COM 56585A102 600 0 0.00 28 -9.68 0.0140
2015-08-11 2015-06-30 13F Marathon Pete COM 56585A102 600 300 100.00 31 0.00 0.0140
2015-05-12 2015-03-31 13F Marathon Pete COM 56585A102 300 0 0.00 31 14.81 0.0137
2015-02-12 2014-12-31 13F Marathon Pete COM 56585A102 300 100 50.00 27 58.82 0.0120
2014-11-06 2014-09-30 13F Marathon Pete COM 56585A102 200 0 0.00 17 6.25 0.0079
2014-08-12 2014-06-30 13F Marathon Pete COM 56585A102 200 200 16 0.0075
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.