Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionStratos Wealth Partners, LTD.
Latest Disclosed Ownership16,034 shares
Latest Disclosed Value $ 3,915,295
Stratos Wealth Partners, LTD. reports 17.85% decrease in ownership of MPC / Marathon Petroleum Corporation

On April 28, 2026 - Stratos Wealth Partners, LTD. filed a 13F-HR form disclosing ownership of 16,034 shares of Marathon Petroleum Corporation (MX:MPC) valued at $3,915,295 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 19,517 shares of Marathon Petroleum Corporation. This represents a change in shares of -17.85% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-28 2026-03-31 13F MARATHON PETE COM 56585A102 16,034 -3,483 -17.85 3,915 23.35 0.0445
2026-01-20 2025-12-31 13F MARATHON PETE COM 56585A102 19,517 -874 -4.29 3,174 -19.24 0.0359
2025-11-06 2025-09-30 13F MARATHON PETE COM 56585A102 20,391 -1,712 -7.75 3,930 7.06 0.0463
2025-07-29 2025-06-30 13F MARATHON PETE COM 56585A102 22,103 8,672 64.57 3,672 87.68 0.0496
2025-04-30 2025-03-31 13F MARATHON PETE COM 56585A102 13,431 -2,460 -15.48 1,957 -11.73 0.0298
2025-01-27 2024-12-31 13F MARATHON PETE COM 56585A102 15,891 -3,760 -19.13 2,217 -30.77 0.0313
2024-10-17 2024-09-30 13F MARATHON PETE COM 56585A102 19,651 -13,870 -41.38 3,201 -44.95 0.0462
2024-07-24 2024-06-30 13F MARATHON PETE COM 56585A102 33,521 515 1.56 5,815 -12.56 0.0931
2024-04-16 2024-03-31 13F MARATHON PETE COM 56585A102 33,006 2,670 8.80 6,651 47.78 0.1102
2024-01-24 2023-12-31 13F MARATHON PETE COM 56585A102 30,336 8,966 41.96 4,501 39.15 0.0839
2023-10-24 2023-09-30 13F MARATHON PETE COM 56585A102 21,370 7,539 54.51 3,234 100.62 0.0696
2023-07-18 2023-06-30 13F MARATHON PETE COM 56585A102 13,831 -3,940 -22.17 1,613 -32.72 0.0365
2023-04-27 2023-03-31 13F MARATHON PETE COM 56585A102 17,771 701 4.11 2,396 20.64 0.0639
2023-01-19 2022-12-31 13F MARATHON PETE COM 56585A102 17,070 -795 -4.45 1,987 11.89 0.0503
2022-10-24 2022-09-30 13F MARATHON PETE COM 56585A102 17,865 -3,557 -16.60 1,775 0.80 0.0496
2022-07-22 2022-06-30 13F MARATHON PETE COM 56585A102 21,422 -2,421 -10.15 1,761 -13.63 0.0444
2022-04-26 2022-03-31 13F MARATHON PETE COM 56585A102 23,843 824 3.58 2,039 38.42 0.0456
2022-01-14 2021-12-31 13F MARATHON PETE COM 56585A102 23,019 5,223 29.35 1,473 33.91 0.0326
2021-10-19 2021-09-30 13F MARATHON PETE COM 56585A102 17,796 -874 -4.68 1,100 -2.48 0.0280
2021-07-19 2021-06-30 13F MARATHON PETE COM 56585A102 18,670 1,040 5.90 1,128 19.62 0.0281
2021-04-27 2021-03-31 13F MARATHON PETE COM 56585A102 17,630 -3,227 -15.47 943 9.27 0.0261
2021-01-29 2020-12-31 13F MARATHON PETE COM 56585A102 20,857 3,658 21.27 863 70.89 0.0256
2020-10-29 2020-09-30 13F MARATHON PETE COM 56585A102 17,199 -83 -0.48 505 -21.83 0.0166
2020-07-28 2020-06-30 13F MARATHON PETE COM 56585A102 17,282 867 5.28 646 66.49 0.0230
2020-05-04 2020-03-31 13F MARATHON PETE COM 56585A102 16,415 1,815 12.43 388 -55.91 0.0178
2020-01-29 2019-12-31 13F MARATHON PETE COM 56585A102 14,600 -41 -0.28 880 -1.01 0.0346
2019-11-12 2019-09-30 13F/A-1 MARATHON PETE COM 56585A102 14,641 -96 -0.65 889 8.02 0.0384
2019-11-12 2019-09-30 13F MARATHON PETE COM 56585A102 101 -14,636 1 50.1488
2019-08-06 2019-06-30 13F MARATHON PETE COM 56585A102 14,737 313 2.17 823 -4.63 0.0356
2019-05-07 2019-03-31 13F MARATHON PETE COM 56585A102 14,424 248 1.75 863 3.11 0.0388
2019-02-08 2018-12-31 13F MARATHON PETE COM 56585A102 14,176 5,092 56.05 837 15.29 0.0432
2018-11-02 2018-09-30 13F MARATHON PETE COM 56585A102 9,084 -3,673 -28.79 726 -18.88 0.0324
2018-08-13 2018-06-30 13F MARATHON PETE COM 56585A102 12,757 743 6.18 895 1.94 0.0399
2018-05-10 2018-03-31 13F MARATHON PETE COM 56585A102 12,014 958 8.66 878 20.44 0.0370
2018-02-09 2017-12-31 13F MARATHON PETE COM 56585A102 11,056 -4,157 -27.33 729 -14.54 0.0327
2017-11-07 2017-09-30 13F MARATHON PETE COM 56585A102 15,213 2,667 21.26 853 29.83 0.0403
2017-07-31 2017-06-30 13F MARATHON PETE COM 56585A102 12,546 1,693 15.60 657 19.67 0.0339
2017-05-11 2017-03-31 13F MARATHON PETE COM 56585A102 10,853 -4,483 -29.23 549 -28.89 0.0310
2017-02-02 2016-12-31 13F MARATHON PETE COM 56585A102 15,336 -1,204 -7.28 772 15.05 0.0480
2016-11-01 2016-09-30 13F MARATHON PETE COM 56585A102 16,540 -226 -1.35 671 5.50 0.0453
2016-08-12 2016-06-30 13F MARATHON PETE COM 56585A102 16,766 -439 -2.55 636 -0.62 0.0472
2016-05-09 2016-03-31 13F MARATHON PETE COM 56585A102 17,205 -192 -1.10 640 -29.05 0.0549
2016-02-16 2015-12-31 13F MARATHON PETE COM 56585A102 17,397 224 1.30 902 13.32 0.0752
2015-10-30 2015-09-30 13F MARATHON PETE COM 56585A102 17,173 -1,167 -6.36 796 -17.00 0.1000
2015-08-12 2015-06-30 13F MARATHON PETE COM 56585A102 18,340 8,047 78.18 959 -9.10 0.1231
2015-05-13 2015-03-31 13F MARATHON PETE COM 56585A102 10,293 2,550 32.93 1,055 50.93 0.1255
2015-02-09 2014-12-31 13F/A-1 MARATHON PETE COM 56585A102 7,743 -543 -6.55 699 -0.43 0.1258
2015-02-09 2014-12-31 13F MARATHON PETE COM 56585A102 7,743 699
2014-11-06 2014-09-30 13F MARATHON PETE COM 56585A102 8,286 2,722 48.92 702 61.01 0.1646
2014-07-17 2014-06-30 13F/A-1 MARATHON PETE COM 56585A102 5,564 5,564 436 0.1454
2014-07-16 2014-06-30 13F MARATHON PETE COM 56585A102 5,564 5,564 846 0.2426
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.