Marathon Petroleum Corporation
US ˙ NYSE ˙ US56585A1025

SecurityMPC / Marathon Petroleum Corporation
InstitutionGabelli Equity Trust Inc
Latest Disclosed Ownership7,200 shares
Latest Disclosed Value $ 1,195,992
Gabelli Equity Trust Inc ownership in MPC / Marathon Petroleum Corporation

On August 29, 2025 - Gabelli Equity Trust Inc filed a NPORT-P form disclosing ownership of 7,200 shares of Marathon Petroleum Corporation (US:MPC) valued at $1,195,992 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 30, 2025 disclosing 7,200 shares of Marathon Petroleum Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $1,886,472 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)
2025-08-29 2025-06-30 NP Marathon Petroleum EC US56585A1025 7,200 0 0.00 1,196 14.03 0.0714
2025-05-30 2025-03-31 NP Marathon Petroleum EC US56585A1025 7,200 0 0.00 1,049 4.38 0.0661
2025-03-03 2024-12-31 NP Marathon Petroleum EC US56585A1025 7,200 0 0.00 1,004 -14.33 0.0624
2024-11-29 2024-09-30 NP Marathon Petroleum EC US56585A1025 7,200 0 0.00 1,173 -6.16 0.0696
2024-08-29 2024-06-28 NP Marathon Petroleum EC US56585A1025 7,200 -800 -10.00 1,249 -22.52 0.0796
2024-05-30 2024-03-28 NP Marathon Petroleum EC US56585A1025 8,000 500 6.67 1,612 44.96 0.0964
2024-02-29 2023-12-29 NP Marathon Petroleum EC US56585A1025 7,500 -500 -6.25 1,113 -8.10 0.0709
2023-11-29 2023-09-29 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 1,211 29.83 0.0840
2023-08-29 2023-06-30 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 933 -13.54 0.0588
2023-05-30 2023-03-31 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 1,079 15.79 0.0699
2023-03-01 2022-12-30 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 931 17.25 0.0618
2022-11-29 2022-09-30 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 795 20.85 0.0602
2022-08-29 2022-06-30 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 658 -3.95 0.0457
2022-05-31 2022-03-31 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 684 33.86 0.0391
2022-03-01 2021-12-31 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 512 3.44 0.0274
2021-11-29 2021-09-30 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 494 2.28 0.0273
2021-08-20 2021-06-30 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 483 13.11 0.0275
2021-05-28 2021-03-31 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 428 29.39 0.0259
2021-02-19 2020-12-31 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 331 41.03 0.0216
2020-11-25 2020-09-30 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 235 -21.74 0.0180
2020-08-24 2020-06-30 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 299 59.04 0.0250
2020-05-22 2020-03-31 NP Marathon Petroleum EC US56585A1025 8,000 0 0.00 189 -61.00 0.0189
2020-02-26 2019-12-31 NP Marathon Petroleum EC 56585A102 8,000 0 0.00 482 -0.82 0.0319
2019-11-26 2019-09-30 NP Marathon Petroleum EC US56585A1025 8,000 8,000 486 0.0338
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.