Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionTCTC Holdings, LLC
Latest Disclosed Ownership88,144 shares
Latest Disclosed Value $ 21,523,002
TCTC Holdings, LLC reports 1.57% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 7, 2026 - TCTC Holdings, LLC filed a 13F-HR form disclosing ownership of 88,144 shares of Marathon Petroleum Corporation (MX:MPC) valued at $21,523,002 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 89,546 shares of Marathon Petroleum Corporation. This represents a change in shares of -1.57% 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)
2026-05-07 2026-03-31 13F MARATHON PETE COM 56585A102 88,144 -1,402 -1.57 21,523 47.80 0.3781
2026-02-11 2025-12-31 13F MARATHON PETE COM 56585A102 89,546 -455 -0.51 14,563 -16.05 0.4351
2025-11-07 2025-09-30 13F MARATHON PETE COM 56585A102 90,001 -2,080 -2.26 17,347 13.41 0.5147
2025-08-12 2025-06-30 13F MARATHON PETE COM 56585A102 92,081 1,160 1.28 15,296 15.47 0.4916
2025-05-07 2025-03-31 13F MARATHON PETE COM 56585A102 90,921 -335 -0.37 13,246 4.05 0.4667
2025-02-10 2024-12-31 13F MARATHON PETE COM 56585A102 91,256 2,892 3.27 12,730 -11.57 0.4572
2024-11-01 2024-09-30 13F MARATHON PETE COM 56585A102 88,364 -3,615 -3.93 14,395 -9.78 0.4875
2024-08-06 2024-06-30 13F MARATHON PETE COM 56585A102 91,979 1,785 1.98 15,957 -12.20 0.5481
2024-05-09 2024-03-31 13F MARATHON PETE COM 56585A102 90,194 -766 -0.84 18,174 34.68 0.6035
2024-02-09 2023-12-31 13F MARATHON PETE COM 56585A102 90,960 -560 -0.61 13,495 -2.57 0.4923
2023-11-13 2023-09-30 13F MARATHON PETE COM 56585A102 91,520 -1,170 -1.26 13,851 28.16 0.5345
2023-08-10 2023-06-30 13F MARATHON PETE COM 56585A102 92,690 -4,643 -4.77 10,808 -17.65 0.4314
2023-05-12 2023-03-31 13F MARATHON PETE COM 56585A102 97,333 -205 -0.21 13,123 15.60 0.5289
2023-02-10 2022-12-31 13F MARATHON PETE COM 56585A102 97,538 -5,480 -5.32 11,352 10.94 0.4626
2022-11-10 2022-09-30 13F MARATHON PETE COM 56585A102 103,018 -390 -0.38 10,233 20.36 0.4429
2022-08-11 2022-06-30 13F MARATHON PETE COM 56585A102 103,408 -32,902 -24.14 8,502 -27.05 0.3736
2022-05-11 2022-03-31 13F MARATHON PETE COM 56585A102 136,310 -16,100 -10.56 11,655 19.50 0.4791
2022-02-09 2021-12-31 13F MARATHON PETE COM 56585A102 152,410 -550 -0.36 9,753 3.16 0.4167
2021-11-04 2021-09-30 13F MARATHON PETROLEUM COM 56585A102 152,960 -2,550 -1.64 9,454 0.62 0.4365
2021-08-11 2021-06-30 13F MARATHON PETROLEUM COM 56585A102 155,510 1,820 1.18 9,396 14.29 0.4308
2021-05-12 2021-03-31 13F MARATHON PETE COM 56585A102 153,690 -1,760 -1.13 8,221 27.87 0.3900
2021-02-10 2020-12-31 13F MARATHON PETROLEUM COM 56585A102 155,450 -6,297 -3.89 6,429 35.46 0.3440
2020-11-12 2020-09-30 13F MARATHON PETE COM 56585A102 161,747 3 0.00 4,746 -21.50 0.2927
2020-08-12 2020-06-30 13F MARATHON PETE COM 56585A102 161,744 8,453 5.51 6,046 66.97 0.3583
2020-05-12 2020-03-31 13F MARATHON PETE COM 56585A102 153,291 5,784 3.92 3,621 -59.26 0.2731
2020-02-11 2019-12-31 13F MARATHON PETE COM 56585A102 147,507 -2,460 -1.64 8,887 -2.45 0.4555
2019-11-13 2019-09-30 13F MARATHON PETE COM 56585A102 149,967 -3,190 -2.08 9,110 6.45 0.4782
2019-08-14 2019-06-30 13F MARATHON PETE COM 56585A102 153,157 9,475 6.59 8,558 -0.48 0.4675
2019-05-15 2019-03-31 13F MARATHON PETE COM 56585A102 143,682 8,250 6.09 8,599 7.60 0.4650
2019-02-14 2018-12-31 13F MARATHON PETE COM 56585A102 135,432 -880 -0.65 7,992 -26.69 0.4457
2018-11-14 2018-09-30 13F MARATHON PETE COM 56585A102 136,312 -3,100 -2.22 10,901 11.45 0.5002
2018-08-14 2018-06-30 13F MARATHON PETE COM 56585A102 139,412 -900 -0.64 9,781 -4.65 0.4729
2018-05-15 2018-03-31 13F MARATHON PETE COM 56585A102 140,312 -5,680 -3.89 10,258 6.49 0.5460
2018-02-14 2017-12-31 13F MARATHON PETE COM 56585A102 145,992 -5,100 -3.38 9,633 13.69 0.5039
2017-11-14 2017-09-30 13F MARATHON PETE COM 56585A102 151,092 -7,000 -4.43 8,473 2.42 0.5230
2017-08-14 2017-06-30 13F MARATHON PETE COM 56585A102 158,092 -2,900 -1.80 8,273 1.68 0.5652
2017-05-15 2017-03-31 13F MARATHON PETE COM 56585A102 160,992 -1,260 -0.78 8,136 -0.40 0.4988
2017-02-14 2016-12-31 13F MARATHON PETE COM 56585A102 162,252 -6,500 -3.85 8,169 19.26 0.4968
2016-11-14 2016-09-30 13F MARATHON PETE COM 56585A102 168,752 200 0.12 6,850 7.05 0.5030
2016-08-15 2016-06-30 13F MARATHON PETE COM 56585A102 168,552 -1,592 -0.94 6,399 1.15 0.4343
2016-05-16 2016-03-31 13F MARATHON PETE COM 56585A102 170,144 25,150 17.35 6,326 -15.84 0.3980
2016-02-16 2015-12-31 13F MARATHON PETE COM 56585A102 144,994 -5,300 -3.53 7,517 7.96 0.4511
2015-11-16 2015-09-30 13F MARATHON PETE COM 56585A102 150,294 -10,500 -6.53 6,963 -17.22 0.3960
2015-08-14 2015-06-30 13F MARATHON PETE COM 56585A102 160,794 79,597 98.03 8,411 1.18 0.4824
2015-05-15 2015-03-31 13F MARATHON PETE COM 56585A102 81,197 -600 -0.73 8,313 12.60 0.4904
2015-02-17 2014-12-31 13F MARATHON PETE COM 56585A102 81,797 7,600 10.24 7,383 17.53 0.4468
2014-11-14 2014-09-30 13F MARATHON PETE COM 56585A102 74,197 -1,460 -1.93 6,282 6.35 0.3632
2014-08-14 2014-06-30 13F MARATHON PETE COM 56585A102 75,657 -800 -1.05 5,907 -11.24 0.3738
2014-05-15 2014-03-31 13F MARATHON PETE COM 56585A102 76,457 0 0.00 6,655 -5.10 0.3824
2014-02-14 2013-12-31 13F MARATHON PETE COM 56585A102 76,457 -764 -0.99 7,013 41.19 0.4005
2013-11-14 2013-09-30 13F MARATHON PETE COM 56585A102 77,221 1,300 1.71 4,967 -7.93 0.3188
2013-08-14 2013-06-30 13F MARATHON PETE COM 56585A102 75,921 75,921 5,395 0.3550
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.