Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionParcion Private Wealth LLC
Latest Disclosed Ownership32,871 shares
Latest Disclosed Value $ 8,026,378
Parcion Private Wealth LLC reports 3.31% decrease in ownership of MPC / Marathon Petroleum Corporation

On April 22, 2026 - Parcion Private Wealth LLC filed a 13F-HR form disclosing ownership of 32,871 shares of Marathon Petroleum Corporation (MX:MPC) valued at $8,026,378 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 33,997 shares of Marathon Petroleum Corporation. This represents a change in shares of -3.31% 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)
2026-04-22 2026-03-31 13F MARATHON PETE COM 56585A102 32,871 -1,126 -3.31 8,026 45.19 0.4972
2026-01-26 2025-12-31 13F MARATHON PETE COM 56585A102 33,997 -453 -1.31 5,529 -16.73 0.3268
2025-10-14 2025-09-30 13F MARATHON PETE COM 56585A102 34,450 47 0.14 6,640 16.19 0.4143
2025-07-30 2025-06-30 13F MARATHON PETE COM 56585A102 34,403 789 2.35 5,715 16.68 0.4081
2025-05-02 2025-03-31 13F MARATHON PETE COM 56585A102 33,614 2,661 8.60 4,897 13.44 0.3992
2025-02-03 2024-12-31 13F MARATHON PETE COM 56585A102 30,953 1,082 3.62 4,318 -11.28 0.3298
2024-10-23 2024-09-30 13F MARATHON PETE COM 56585A102 29,871 3,683 14.06 4,866 7.11 0.4047
2024-08-06 2024-06-30 13F MARATHON PETE COM 56585A102 26,188 -701 -2.61 4,543 -16.15 0.4153
2024-04-24 2024-03-31 13F MARATHON PETE COM 56585A102 26,889 -857 -3.09 5,418 31.63 0.4769
2024-01-23 2023-12-31 13F MARATHON PETE COM 56585A102 27,746 -36 -0.13 4,116 -2.09 0.3767
2023-10-27 2023-09-30 13F MARATHON PETE COM 56585A102 27,782 471 1.72 4,204 32.04 0.4363
2023-08-02 2023-06-30 13F MARATHON PETE COM 56585A102 27,311 1,228 4.71 3,184 -9.44 0.3214
2023-05-11 2023-03-31 13F MARATHON PETE COM 56585A102 26,083 3,401 14.99 3,517 33.23 0.3676
2023-02-10 2022-12-31 13F MARATHON PETE COM 56585A102 22,682 22,682 2,640 0.2864
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.