Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionAdvisorNet Financial, Inc
Latest Disclosed Ownership1,124 shares
Latest Disclosed Value $ 274,551
AdvisorNet Financial, Inc reports 0.45% increase in ownership of MPC / Marathon Petroleum Corporation

On April 17, 2026 - AdvisorNet Financial, Inc filed a 13F-HR form disclosing ownership of 1,124 shares of Marathon Petroleum Corporation (MX:MPC) valued at $274,551 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 1,119 shares of Marathon Petroleum Corporation. This represents a change in shares of 0.45% 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)
2026-04-17 2026-03-31 13F MARATHON PETE CORP COM Stock 56585A102 1,124 5 0.45 275 51.38 0.0142
2026-01-20 2025-12-31 13F MARATHON PETE CORP COM Stock 56585A102 1,119 1 0.09 182 -15.81 0.0097
2025-10-09 2025-09-30 13F MARATHON PETE CORP COM Stock 56585A102 1,118 -39 -3.37 216 11.98 0.0122
2025-07-14 2025-06-30 13F MARATHON PETE CORP COM Stock 56585A102 1,157 -20 -1.70 192 12.28 0.0124
2025-04-07 2025-03-31 13F MARATHON PETE CORP COM Stock 56585A102 1,177 14 1.20 171 5.56 0.0127
2025-01-13 2024-12-31 13F MARATHON PETE CORP COM Stock 56585A102 1,163 -21 -1.77 162 -15.62 0.0136
2024-10-15 2024-09-30 13F MARATHON PETE CORP COM Stock 56585A102 1,184 444 60.00 193 50.00 0.0144
2024-07-16 2024-06-30 13F MARATHON PETE CORP COM Stock 56585A102 740 172 30.28 128 12.28 0.0116
2024-04-12 2024-03-31 13F MARATHON PETE CORP COM Stock 56585A102 568 105 22.68 114 67.65 0.0110
2024-01-19 2023-12-31 13F MARATHON PETE CORP COM Stock 56585A102 463 44 10.50 69 7.94 0.0063
2023-10-12 2023-09-30 13F MARATHON PETE CORP COM Stock 56585A102 419 -83 -16.53 63 8.62 0.0058
2023-07-14 2023-06-30 13F MARATHON PETE CORP COM Stock 56585A102 502 -85 -14.48 59 -26.58 0.0050
2023-04-28 2023-03-31 13F MARATHON PETE CORP COM Stock 56585A102 587 -18 -2.98 79 12.86 0.0072
2023-01-13 2022-12-31 13F MARATHON PETE CORP COM Stock 56585A102 605 51 9.21 70 27.27 0.0069
2022-10-04 2022-09-30 13F MARATHON PETE CORP COM Stock 56585A102 554 30 5.73 55 27.91 0.0055
2022-07-07 2022-06-30 13F MARATHON PETE CORP COM Stock 56585A102 524 11 2.14 43 -2.27 0.0042
2022-04-14 2022-03-31 13F MARATHON PETE CORP COM Stock 56585A102 513 -89 -14.78 44 12.82 0.0028
2022-01-19 2021-12-31 13F MARATHON PETE CORP COM Stock 56585A102 602 -7,974 -92.98 39 -92.64 0.0024
2021-10-15 2021-09-30 13F MARATHON PETE CORP COM Stock 56585A102 8,576 -1,795 -17.31 530 -15.47 0.0369
2021-07-06 2021-06-30 13F MARATHON PETE CORP COM Stock 56585A102 10,371 2,008 24.01 627 40.27 0.0416
2021-04-14 2021-03-31 13F MARATHON PETE CORP COM Stock 56585A102 8,363 1 0.01 447 29.19 0.0318
2021-02-04 2020-12-31 13F MARATHON PETE CORP COM Stock 56585A102 8,362 8,095 3,031.84 346 4,225.00 0.0279
2020-11-06 2020-09-30 13F MARATHON PETE CORP COM Stock 56585A102 267 1 0.38 8 -20.00 0.0007
2020-08-26 2020-06-30 13F MARATHON PETE CORP COM Stock 56585A102 266 21 8.57 10 66.67 0.0008
2020-05-14 2020-03-31 13F MARATHON PETE CORP COM Stock 56585A102 245 200 444.44 6 100.00 0.0006
2020-02-12 2019-12-31 13F MARATHON PETE CORP COM Stock 56585A102 45 -255 -85.00 3 -83.33 0.0003
2019-10-23 2019-09-30 13F MARATHON PETE CORP COM Stock 56585A102 300 208 226.09 18 260.00 0.0017
2019-07-15 2019-06-30 13F MARATHON PETE CORP COM Stock 56585A102 92 -78 -45.88 5 -50.00 0.0006
2019-05-14 2019-03-31 13F MARATHON PETE CORP COM Stock 56585A102 170 0 0.00 10 0.00 0.0012
2019-02-08 2018-12-31 13F MARATHON PETE CORP COM Stock 56585A102 170 0 0.00 10 -28.57 0.0014
2018-11-14 2018-09-30 13F MARATHON PETE CORP COM Stock 56585A102 170 -34 -16.67 14 0.00 0.0018
2018-07-26 2018-06-30 13F MARATHON PETE CORP COM Stock 56585A102 204 -536 -72.43 14 -74.07 0.0019
2018-05-08 2018-03-31 13F MARATHON PETE CORP COM Stock 56585A102 740 -44 -5.61 54 3.85 0.0075
2018-02-27 2017-12-31 13F MARATHON PETE CORP COM Stock 56585A102 784 784 52 0.0079
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.