마라톤 석유 공사
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionSmith Group Asset Management, LLC
Latest Disclosed Ownership93,041 shares
Latest Disclosed Value $ 22,718,751
Smith Group Asset Management, LLC reports 7.31% increase in ownership of MPC / Marathon Petroleum Corporation

On May 16, 2026 - Smith Group Asset Management, LLC filed a 13F-HR form disclosing ownership of 93,041 shares of Marathon Petroleum Corporation (MX:MPC) valued at $22,718,751 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 86,704 shares of Marathon Petroleum Corporation. This represents a change in shares of 7.31% 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)
2026-05-16 2026-03-31 13F MARATHON PETE COM 56585A102 93,041 6,337 7.31 22,719 61.12 1.1589
2026-02-10 2025-12-31 13F MARATHON PETE COM 56585A102 86,704 5,138 6.30 14,101 -10.31 0.7479
2025-11-13 2025-09-30 13F MARATHON PETE COM 56585A102 81,566 4,891 6.38 15,721 23.44 0.9033
2025-07-31 2025-06-30 13F MARATHON PETE COM 56585A102 76,675 1,574 2.10 12,736 16.41 0.8351
2025-04-28 2025-03-31 13F MARATHON PETE COM 56585A102 75,101 2,960 4.10 10,941 8.73 0.8203
2025-01-23 2024-12-31 13F MARATHON PETE COM 56585A102 72,141 -143 -0.20 10,064 -14.54 0.7417
2024-10-25 2024-09-30 13F MARATHON PETE COM 56585A102 72,284 951 1.33 11,776 -4.84 0.9768
2024-07-31 2024-06-30 13F MARATHON PETE COM 56585A102 71,333 3,499 5.16 12,375 -9.47 1.0981
2024-04-30 2024-03-31 13F MARATHON PETE COM 56585A102 67,834 6,932 11.38 13,669 51.28 0.7822
2024-02-12 2023-12-31 13F MARATHON PETE COM 56585A102 60,902 60,902 9,035 0.5258
2022-02-02 2021-12-31 13F Marathon Petroleum Common Stock - Long 56585A102 0 -647 -100.00 0 -100.00
2021-11-12 2021-09-30 13F Marathon Petroleum Common Stock - Long 56585A102 647 647 40 0.0020
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.