Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionCatalyst Capital Advisors LLC
Latest Disclosed Ownership1,975 shares
Latest Disclosed Value $ 482,256
Catalyst Capital Advisors LLC reports 291.09% increase in ownership of MPC / Marathon Petroleum Corporation

On May 6, 2026 - Catalyst Capital Advisors LLC filed a 13F-HR form disclosing ownership of 1,975 shares of Marathon Petroleum Corporation (MX:MPC) valued at $482,256 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 505 shares of Marathon Petroleum Corporation. This represents a change in shares of 291.09% 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)
2026-05-06 2026-03-31 13F MARATHON PETE COM 56585A102 1,975 1,470 291.09 482 487.80 0.0090
2026-02-10 2025-12-31 13F MARATHON PETE COM 56585A102 505 -364 -41.89 82 -50.90 0.0017
2025-11-12 2025-09-30 13F MARATHON PETE COM 56585A102 869 -38 -4.19 167 11.33 0.0034
2025-07-31 2025-06-30 13F MARATHON PETE COM 56585A102 907 380 72.11 151 97.37 0.0030
2025-04-29 2025-03-31 13F MARATHON PETE COM 56585A102 527 -199 -27.41 77 -24.75 0.0016
2025-01-31 2024-12-31 13F MARATHON PETE COM 56585A102 726 726 101 0.0022
2023-11-09 2023-09-30 13F MARATHON PETE COM 56585A102 0 -10,245 -100.00 0 -100.00
2023-08-08 2023-06-30 13F MARATHON PETE COM 56585A102 10,245 195 1.94 1,195 -11.88 0.0347
2023-05-12 2023-03-31 13F MARATHON PETE COM 56585A102 10,050 -13,960 -58.14 1,355 -51.50 0.0413
2023-02-13 2022-12-31 13F/A-1 MARATHON PETE COM 56585A102 24,010 0 0.00 2,795 17.15 0.0907
2023-02-07 2022-12-31 13F MARATHON PETE COM 56585A102 24,010 0 3 0.0892
2022-11-08 2022-09-30 13F MARATHON PETE COM 56585A102 24,010 -10,000 -29.40 2,385 -14.70 0.0899
2022-08-09 2022-06-30 13F MARATHON PETE COM 56585A102 34,010 -6,900 -16.87 2,796 -20.07 0.1168
2022-05-10 2022-03-31 13F MARATHON PETE COM 56585A102 40,910 3,400 9.06 3,498 45.75 0.1435
2022-02-10 2021-12-31 13F MARATHON PETE COM 56585A102 37,510 -11,231 -23.04 2,400 -20.35 0.1106
2021-11-09 2021-09-30 13F MARATHON PETE COM 56585A102 48,741 -4,070 -7.71 3,013 -5.58 0.1510
2021-08-06 2021-06-30 13F MARATHON PETE COM 56585A102 52,811 -3,196 -5.71 3,191 6.51 0.1576
2021-05-10 2021-03-31 13F MARATHON PETE COM 56585A102 56,007 -2,557 -4.37 2,996 23.70 0.1660
2021-02-05 2020-12-31 13F MARATHON PETE COM 56585A102 58,564 11,689 24.94 2,422 76.15 0.1351
2020-11-05 2020-09-30 13F MARATHON PETE COM 56585A102 46,875 -2,300 -4.68 1,375 -25.19 0.0775
2020-08-10 2020-06-30 13F MARATHON PETE COM 56585A102 49,175 1,386 2.90 1,838 62.80 0.0948
2020-05-12 2020-03-31 13F MARATHON PETE COM 56585A102 47,789 -2,539 -5.04 1,129 -62.76 0.0564
2020-02-06 2019-12-31 13F MARATHON PETE COM 56585A102 50,328 50,328 3,032 0.0974
2019-02-07 2018-12-31 13F MARATHON PETE COM 56585A102 0 -90,663 -100.00 0 -100.00
2018-11-08 2018-09-30 13F MARATHON PETE COM 56585A102 90,663 -6,451 -6.64 7,250 6.41 0.2380
2018-08-07 2018-06-30 13F MARATHON PETE COM 56585A102 97,114 48,649 100.38 6,813 92.29 0.2405
2018-05-18 2018-03-31 13F MARATHON PETE COM 56585A102 48,465 47,164 3,625.21 3,543 4,019.77 0.1275
2018-02-07 2017-12-31 13F MARATHON PETE COM 56585A102 1,301 0 0.00 86 17.81 0.0032
2017-11-08 2017-09-30 13F MARATHON PETE COM 56585A102 1,301 -5,400 -80.58 73 -79.20 0.0032
2017-08-02 2017-06-30 13F MARATHON PETE COM 56585A102 6,701 5,400 415.07 351 431.82 0.0150
2017-05-09 2017-03-31 13F MARATHON PETE COM 56585A102 1,301 -9,593 -88.06 66 -87.98 0.0033
2017-02-08 2016-12-31 13F MARATHON PETE COM 56585A102 10,894 -5,221 -32.40 549 -16.06 0.0351
2016-11-14 2016-09-30 13F/A-1 MARATHON PETE COM 56585A102 16,115 16,115 0.00 654 0.0721
2016-08-10 2016-06-30 13F MARATHON PETE COM 56585A102 0 -83,875 -100.00 0 -100.00
2016-05-11 2016-03-31 13F MARATHON PETE COM 56585A102 83,875 -22,809 -21.38 3,118 -43.62 0.5248
2016-02-10 2015-12-31 13F MARATHON PETE COM 56585A102 106,684 -819 -0.76 5,530 11.02 0.8012
2015-11-12 2015-09-30 13F MARATHON PETE COM 56585A102 107,503 107,503 0.00 4,981 0.6685
2015-08-12 2015-06-30 13F MARATHON PETE COM 56585A102 0 -65,808 -100.00 0 -100.00
2015-05-15 2015-03-31 13F MARATHON PETE COM 56585A102 65,808 -9,192 -12.26 6,738 -0.47 0.7728
2015-02-10 2014-12-31 13F MARATHON PETE COM 56585A102 75,000 74,237 9,729.62 6,770 10,157.58 0.7945
2014-05-12 2014-03-31 13F MARATHON PETE COM 56585A102 763 -33,225 -97.76 66 -97.88 0.0149
2014-02-13 2013-12-31 13F MARATHON PETE COM 56585A102 33,988 3,736 12.35 3,118 60.23 1.0045
2013-11-14 2013-09-30 13F MARATHON PETE COM 56585A102 30,252 30,252 1,946 1.0646
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.