Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionMarino, Stram & Associates Llc
Latest Disclosed Ownership11,633 shares
Latest Disclosed Value $ 2,840,433
Marino, Stram & Associates Llc reports 1.82% increase in ownership of MPC / Marathon Petroleum Corporation

On April 29, 2026 - Marino, Stram & Associates Llc filed a 13F-HR form disclosing ownership of 11,633 shares of Marathon Petroleum Corporation (MX:MPC) valued at $2,840,433 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 11,425 shares of Marathon Petroleum Corporation. This represents a change in shares of 1.82% 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)
2026-04-29 2026-03-31 13F MARATHON PETE COM 56585A102 11,633 208 1.82 2,840 52.85 0.5103
2026-01-16 2025-12-31 13F MARATHON PETE COM 56585A102 11,425 -542 -4.53 1,858 -19.43 0.3357
2025-11-03 2025-09-30 13F MARATHON PETE COM 56585A102 11,967 6 0.05 2,307 16.11 0.4149
2025-07-18 2025-06-30 13F MARATHON PETE COM 56585A102 11,961 564 4.95 1,987 19.64 0.4009
2025-04-21 2025-03-31 13F MARATHON PETE COM 56585A102 11,397 -146 -1.26 1,660 3.11 0.3686
2025-01-17 2024-12-31 13F MARATHON PETE COM 56585A102 11,543 34 0.30 1,610 -14.09 0.3563
2024-10-21 2024-09-30 13F MARATHON PETE COM 56585A102 11,509 32 0.28 1,875 -5.83 0.4184
2024-07-18 2024-06-30 13F MARATHON PETE COM 56585A102 11,477 -74 -0.64 1,991 -14.48 0.4865
2024-04-24 2024-03-31 13F MARATHON PETE COM 56585A102 11,551 127 1.11 2,328 37.37 0.5511
2024-01-30 2023-12-31 13F MARATHON PETE COM 56585A102 11,424 60 0.53 1,695 -1.45 0.4384
2023-10-30 2023-09-30 13F MARATHON PETE COM 56585A102 11,364 -16 -0.14 1,720 29.64 0.5037
2023-07-20 2023-06-30 13F MARATHON PETE COM 56585A102 11,380 -715 -5.91 1,327 -18.65 0.3756
2023-04-20 2023-03-31 13F MARATHON PETE COM 56585A102 12,095 75 0.62 1,631 16.51 0.4925
2023-01-19 2022-12-31 13F MARATHON PETE COM 56585A102 12,020 241 2.05 1,399 19.57 0.4407
2022-10-17 2022-09-30 13F MARATHON PETE COM 56585A102 11,779 -43 -0.36 1,170 20.37 0.4222
2022-07-15 2022-06-30 13F MARATHON PETE COM 56585A102 11,822 9 0.08 972 -3.76 0.3371
2022-04-25 2022-03-31 13F MARATHON PETE COM 56585A102 11,813 63 0.54 1,010 34.31 0.3185
2022-01-20 2021-12-31 13F MARATHON PETE COM 56585A102 11,750 666 6.01 752 9.78 0.2309
2021-10-14 2021-09-30 13F MARATHON PETE COM 56585A102 11,084 11,084 685 0.2368
2021-07-22 2021-06-30 13F MARATHON PETE COM 56585A102 0 -9,243 -100.00 0 -100.00
2021-04-26 2021-03-31 13F MARATHON PETE COM 56585A102 9,243 1,529 19.82 494 54.86 0.1930
2021-01-19 2020-12-31 13F NEWMONT CORP COM ISIN #US6516391066 SEDOL #BJYKTV2 COM 56585A102 7,714 7,714 319 0.1417
2019-07-19 2019-06-30 13F MARATHON PETROLEUM CORP COM USD0.01 COM 56585A102 0 -861 -100.00 0 -100.00
2019-05-14 2019-03-31 13F MARATHON PETROLEUM CORP COM USD0.01 COM 56585A102 861 450 109.49 52 116.67 0.0375
2019-02-14 2018-12-31 13F MARATHON PETE COM 56585A102 411 386 1,544.00 24 1,100.00 0.0210
2018-11-14 2018-09-30 13F MARATHON PETROLEUM CORP COM USD0.01 Equities 56585A102 25 -7 -21.88 2 0.00 0.0016
2018-08-13 2018-06-30 13F MARATHON PETE COM 56585A102 32 32 2 0.0018
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.