Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionAlpha Omega Wealth Management LLC
Latest Disclosed Ownership41,226 shares
Latest Disclosed Value $ 10,066,449
Alpha Omega Wealth Management LLC reports 4.31% decrease in ownership of MPC / Marathon Petroleum Corporation

On April 7, 2026 - Alpha Omega Wealth Management LLC filed a 13F-HR form disclosing ownership of 41,226 shares of Marathon Petroleum Corporation (MX:MPC) valued at $10,066,449 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 22, 2026 disclosing 43,085 shares of Marathon Petroleum Corporation. This represents a change in shares of -4.31% 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.

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)
2026-04-07 2026-03-31 13F MARATHON PETE COM 56585A102 41,226 -1,859 -4.31 10,066 43.68 1.6322
2026-01-22 2025-12-31 13F MARATHON PETE COM 56585A102 43,085 -628 -1.44 7,007 -16.84 1.1624
2025-10-22 2025-09-30 13F/A-1 MARATHON PETE COM 56585A102 43,713 -6,543 -13.02 8,425 0.92 1.4019
2025-10-22 2025-09-30 13F MARATHON PETE COM 56585A102 43,713 8,425
2025-07-15 2025-06-30 13F MARATHON PETE COM 56585A102 50,256 -48 -0.10 8,348 13.92 1.4949
2025-04-15 2025-03-31 13F MARATHON PETE COM 56585A102 50,304 -8,950 -15.10 7,329 -11.34 1.4006
2025-01-24 2024-12-31 13F MARATHON PETE COM 56585A102 59,254 1,348 2.33 8,266 -12.38 1.5670
2024-10-03 2024-09-30 13F MARATHON PETE COM 56585A102 57,906 -724 -1.23 9,433 -7.26 1.7318
2024-07-25 2024-06-30 13F MARATHON PETE COM 56585A102 58,630 -988 -1.66 10,171 -15.33 1.9438
2024-04-17 2024-03-31 13F MARATHON PETE COM 56585A102 59,618 -2,040 -3.31 12,013 31.32 2.2312
2024-01-31 2023-12-31 13F MARATHON PETE COM 56585A102 61,658 -2,201 -3.45 9,148 -5.35 1.5147
2023-10-11 2023-09-30 13F MARATHON PETE COM 56585A102 63,859 -1,642 -2.51 9,664 26.54 1.6663
2023-07-31 2023-06-30 13F MARATHON PETE COM 56585A102 65,501 -3,255 -4.73 7,637 -17.62 1.2903
2023-04-19 2023-03-31 13F MARATHON PETE COM 56585A102 68,756 -1,732 -2.46 9,270 12.99 1.6017
2023-02-01 2022-12-31 13F MARATHON PETE COM 56585A102 70,488 -17,523 -19.91 8,204 -6.15 1.4573
2022-10-19 2022-09-30 13F MARATHON PETE COM 56585A102 88,011 -1,637 -1.83 8,742 18.62 1.6691
2022-07-21 2022-06-30 13F MARATHON PETE COM 56585A102 89,648 -30,577 -25.43 7,370 -28.30 1.3160
2022-04-29 2022-03-31 13F MARATHON PETE COM 56585A102 120,225 -2,608 -2.12 10,279 14.44 1.6247
2022-01-18 2021-12-31 13F MARATHON PETE COM 56585A102 122,833 -10,027 -7.55 8,982 9.38 1.3803
2021-10-13 2021-09-30 13F MARATHON PETE COM 56585A102 132,860 -1,454 -1.08 8,212 1.20 1.3428
2021-07-01 2021-06-30 13F MARATHON PETE COM 56585A102 134,314 2,397 1.82 8,115 15.01 1.3320
2021-04-29 2021-03-31 13F MARATHON PETE COM 56585A102 131,917 -2,310 -1.72 7,056 27.09 1.2341
2021-02-05 2020-12-31 13F MARATHON PETE COM 56585A102 134,227 190 0.14 5,552 41.16 0.9400
2020-11-05 2020-09-30 13F MARATHON PETE COM 56585A102 134,037 -18,982 -12.40 3,933 -31.24 0.5550
2020-07-27 2020-06-30 13F MARATHON PETE COM 56585A102 153,019 -52,050 -25.38 5,720 18.08 0.8695
2020-05-04 2020-03-31 13F MARATHON PETE COM 56585A102 205,069 124,005 152.97 4,844 -0.82 0.8928
2020-02-05 2019-12-31 13F MARATHON PETE COM 56585A102 81,064 1,432 1.80 4,884 -7.39 0.7842
2019-11-12 2019-09-30 13F MARATHON PETE COM 56585A102 79,632 79,197 18,206.21 5,274 21,875.00 0.8562
2019-08-14 2019-06-30 13F MARATHON PETEROLEUM COM 56585A102 435 0 0.00 24 -7.69 0.0102
2019-05-02 2019-03-31 13F MARATHON PETEROLEUM COM 56585A102 435 250 135.14 26 136.36 0.0117
2019-01-18 2018-12-31 13F MARATHON PETEROLEUM COM 56585A102 185 0 0.00 11 -26.67 0.0055
2018-11-01 2018-09-30 13F MARATHON PETEROLEUM COM 56585A102 185 0 0.00 15 15.38 0.0067
2018-08-14 2018-06-30 13F MARATHON PETEROLEUM COM 56585A102 185 100 117.65 13 116.67 0.0064
2018-05-01 2018-03-31 13F MARATHON PETEROLEUM COM 56585A102 85 85 6 0.0030
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.