Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionFirst Financial Corp /in/
Latest Disclosed Ownership2,199 shares
Latest Disclosed Value $ 536,952
First Financial Corp /in/ ownership in MPC / Marathon Petroleum Corporation

On April 7, 2026 - First Financial Corp /in/ filed a 13F-HR form disclosing ownership of 2,199 shares of Marathon Petroleum Corporation (MX:MPC) valued at $536,952 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 2,199 shares of Marathon Petroleum Corporation. This represents a change in shares of 0.00% 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)
2026-04-07 2026-03-31 13F Marathon Petroleum Com 56585A102 2,199 0 0.00 537 50.14 0.2109
2026-01-13 2025-12-31 13F Marathon Petroleum Com 56585A102 2,199 -50 -2.22 358 -17.55 0.1350
2025-10-09 2025-09-30 13F Marathon Petroleum Com 56585A102 2,249 -46 -2.00 433 13.65 0.1699
2025-07-09 2025-06-30 13F Marathon Petroleum Com 56585A102 2,295 -32 -1.38 381 12.39 0.1702
2025-04-10 2025-03-31 13F Marathon Pete Com 56585A102 2,327 -94 -3.88 339 0.59 0.1639
2025-01-13 2024-12-31 13F Marathon Pete Com 56585A102 2,421 -8 -0.33 338 -14.68 0.1573
2024-10-24 2024-09-30 13F Marathon Pete Com 56585A102 2,429 0 0.00 396 -6.18 0.1889
2024-07-11 2024-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,429 0 0.00 421 -13.91 0.2147
2024-04-12 2024-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,429 59 2.49 489 39.32 0.2485
2024-01-16 2023-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,370 2 0.08 352 -1.96 0.1789
2023-10-11 2023-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,368 -39 -1.62 358 27.86 0.2101
2023-07-14 2023-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,407 -8 -0.33 281 -13.85 0.1799
2023-04-17 2023-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,415 -20 -0.82 326 14.84 0.2025
2023-01-17 2022-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,435 0 0.00 283 16.94 0.1739
2022-10-20 2022-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,435 31 1.29 242 22.22 0.1626
2022-07-15 2022-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,404 -1,200 -33.30 198 -35.92 0.1303
2022-04-14 2022-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,604 1,200 49.92 309 100.65 0.1562
2022-01-14 2021-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,404 -35 -1.44 154 1.99 0.0941
2021-10-18 2021-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,439 -100 -3.94 151 -1.95 0.1003
2021-07-15 2021-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,539 -415 -14.05 154 -2.53 0.1024
2021-04-15 2021-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 2,954 -162 -5.20 158 22.48 0.1097
2021-01-15 2020-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,116 0 0.00 129 41.76 0.0951
2020-10-13 2020-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,116 -167 -5.09 91 -26.02 0.0772
2020-07-15 2020-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,283 -275 -7.73 123 46.43 0.1049
2020-04-15 2020-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,558 -105 -2.87 84 -61.99 0.0772
2020-01-15 2019-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,663 -160 -4.19 221 -4.74 0.1607
2019-10-15 2019-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,823 68 1.81 232 10.48 0.1808
2019-07-15 2019-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,755 0 0.00 210 -6.25 0.1697
2019-04-12 2019-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,755 -174 -4.43 224 -3.45 0.1673
2019-01-15 2018-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 3,929 -320 -7.53 232 -31.76 0.1869
2018-10-16 2018-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 4,249 136 3.31 340 17.65 0.2227
2018-07-12 2018-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 4,113 -75 -1.79 289 -5.56 0.2024
2018-04-17 2018-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 4,188 -347 -7.65 306 2.34 0.2197
2018-01-16 2017-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 4,535 -215 -4.53 299 12.41 0.1931
2017-10-13 2017-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 4,750 -3 -0.06 266 6.83 0.1739
2017-07-13 2017-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 4,753 -545 -10.29 249 -7.09 0.1581
2017-04-18 2017-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 5,298 -884 -14.30 268 -13.83 0.1702
2017-01-10 2016-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 6,182 -966 -13.51 311 7.24 0.1850
2016-10-17 2016-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 7,148 -3,257 -31.30 290 -26.58 0.1719
2016-07-12 2016-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 10,405 -11,929 -53.41 395 -52.41 0.2291
2016-04-18 2016-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 22,334 -1,740 -7.23 830 -33.49 0.4327
2016-01-14 2015-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 24,074 -3,470 -12.60 1,248 -2.19 0.6603
2015-10-09 2015-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 27,544 -1,110 -3.87 1,276 -14.82 0.7173
2015-07-14 2015-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 28,654 14,832 107.31 1,498 5.87 0.7590
2015-04-14 2015-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 13,822 100 0.73 1,415 14.21 0.7133
2015-01-08 2014-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 13,722 -439 -3.10 1,239 3.34 0.6181
2014-10-21 2014-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 14,161 700 5.20 1,199 14.19 0.5950
2014-07-18 2014-06-30 13F/A-1 MARATHON PETROLEUM COMMON STOCK 56585A102 13,461 -1,185 -8.09 1,050 -17.65 0.5053
2014-07-17 2014-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 14,446 1,325
2014-04-21 2014-03-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 14,646 200 1.38 1,275 -3.77 0.6125
2014-01-23 2013-12-31 13F MARATHON PETROLEUM COMMON STOCK 56585A102 14,446 385 2.74 1,325 46.57 0.6196
2013-10-28 2013-09-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 14,061 2,037 16.94 904 5.85 0.4451
2013-07-24 2013-06-30 13F MARATHON PETROLEUM COMMON STOCK 56585A102 12,024 12,024 854 0.4234
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.