Marathon Petroleum Corporation
DE ˙ XTRA ˙ US56585A1025
227,40 € ↑8,30 (3,79%)
2026-06-03
AKTIENPREIS
SecurityDE:MPN / Marathon Petroleum Corporation
InstitutionSWS Partners
Latest Disclosed Ownership14,558 shares
Latest Disclosed Value $ 3,554,668
SWS Partners reports 9.65% increase in ownership of MPN / Marathon Petroleum Corporation

On April 21, 2026 - SWS Partners filed a 13F-HR form disclosing ownership of 14,558 shares of Marathon Petroleum Corporation (DE:MPN) valued at $3,109,589 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 13,277 shares of Marathon Petroleum Corporation. This represents a change in shares of 9.65% during the quarter. The current value of the position is $3,310,489 USD.

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)
2026-04-21 2026-03-31 13F MARATHON PETE COM 56585A102 14,558 1,281 9.65 3,555 64.61 0.8768
2026-01-16 2025-12-31 13F MARATHON PETE COM 56585A102 13,277 -1,142 -7.92 2,159 -22.31 0.5212
2025-10-16 2025-09-30 13F MARATHON PETE COM 56585A102 14,419 768 5.63 2,779 22.58 0.6783
2025-07-17 2025-06-30 13F MARATHON PETE COM 56585A102 13,651 -3,277 -19.36 2,268 -8.07 0.6119
2025-05-27 2025-03-31 13F/A-1 MARATHON PETE COM 56585A102 16,928 -649 -3.69 2,466 0.57 0.8094
2025-05-19 2025-03-31 13F MARATHON PETE COM 56585A102 17,577 0 2,452 0.7425
2025-02-06 2024-12-31 13F MARATHON PETE COM 56585A102 17,577 2,806 19.00 2,452 1.91 0.7425
2024-10-15 2024-09-30 13F MARATHON PETE COM 56585A102 14,771 -4,841 -24.68 2,406 -29.26 0.7665
2024-07-17 2024-06-30 13F MARATHON PETE COM 56585A102 19,612 1,560 8.64 3,401 -6.49 1.0167
2024-04-30 2024-03-31 13F Marathon Petroleum MPC-US 56585A102 18,052 -2,669 -12.88 3,638 18.31 1.0876
2024-02-13 2023-12-31 13F Marathon Petroleum MPC-US 56585A102 20,721 -1,390 -6.29 3,074 -8.13 1.0020
2023-11-09 2023-09-30 13F Marathon Petroleum MPC-US 56585A102 22,111 -3,647 -14.16 3,346 11.46 1.2370
2023-08-17 2023-06-30 13F/A-2 Marathon Petroleum COM 56585A102 25,758 3,341 14.90 3,003 -0.66 1.0831
2023-07-26 2023-06-30 13F Marathon Petroleum COM 56585A102 25,758 3,341 3,003 1.0773
2023-05-09 2023-03-31 13F Marathon Petroleum COM 56585A102 22,417 -3,549 -13.67 3,023 100,633.33 1.1252
2023-01-30 2022-12-31 13F Marathon Petroleum COM 56585A102 25,966 413 1.62 3 -99.88 1.4332
2022-11-09 2022-09-30 13F Marathon Petroleum COM 56585A102 25,553 -1,380 -5.12 2,538 14.63 1.1758
2022-07-28 2022-06-30 13F Marathon Petroleum COM 56585A102 26,933 -3,607 -11.81 2,214 -15.20 1.8638
2022-05-05 2022-03-31 13F Marathon Petroleum COM 56585A102 30,540 2,332 8.27 2,611 44.65 1.7077
2022-01-25 2021-12-31 13F Marathon Petroleum COM 56585A102 28,208 2,886 11.40 1,805 15.34 1.0264
2021-11-08 2021-09-30 13F Marathon Petroleum COM 56585A102 25,322 -2,303 -8.34 1,565 -6.23 0.9697
2021-08-09 2021-06-30 13F Marathon Petroleum COM 56585A102 27,625 -945 -3.31 1,669 9.23 1.0862
2021-05-17 2021-03-31 13F Marathon Petroleum COM 56585A102 28,570 -1,284 -4.30 1,528 23.72 1.0516
2021-03-31 2020-12-31 13F Marathon Petroleum COM 56585A102 29,854 585 2.00 1,235 43.77 0.5503
2020-11-13 2020-09-30 13F Marathon Petroleum COM 56585A102 29,269 5,262 21.92 859 -6.32 0.4303
2020-08-13 2020-06-30 13F MARATHON PETROLEUM COM 56585A102 24,007 24,007 917 1.1677
2018-08-13 2018-06-30 13F MARATHON PETE COM 56585A102 0 -311 -100.00 0 -100.00
2018-05-15 2018-03-31 13F MARATHON PETE COM 56585A102 311 -62 -16.62 22 -12.00 0.0162
2018-02-15 2017-12-31 13F MARATHON PETE COM 56585A102 373 373 25 0.0188
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.