Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionCIBC Private Wealth Group, LLC
Latest Disclosed Ownership25,656 shares
Latest Disclosed Value $ 4,172,445
CIBC Private Wealth Group, LLC reports 5.75% increase in ownership of MPC / Marathon Petroleum Corporation

On February 12, 2026 - CIBC Private Wealth Group, LLC filed a 13F-HR form disclosing ownership of 25,656 shares of Marathon Petroleum Corporation (MX:MPC) valued at $4,172,445 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 24, 2025 disclosing 24,262 shares of Marathon Petroleum Corporation. This represents a change in shares of 5.75% 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)
2026-02-12 2025-12-31 13F MARATHON PETE COM 56585A102 25,656 1,394 5.75 4,172 -10.78
2025-11-24 2025-09-30 13F MARATHON PETE COM 56585A102 24,262 1,212 5.26 4,676 22.15 0.0080
2025-08-12 2025-06-30 13F MARATHON PETE COM 56585A102 23,050 -93,845 -80.28 3,829 -72.37 0.0068
2025-05-14 2025-03-31 13F MARATHON PETE COM 56585A102 116,895 -20,293 -14.79 13,858 -29.03 0.0293
2025-02-12 2024-12-31 13F Marathon Petroleum COM 56585A102 137,188 54,125 65.16 19,526 44.30 0.0354
2024-11-13 2024-09-30 13F Marathon Petroleum COM 56585A102 83,063 58,633 240.00 13,532 230.75 0.0242
2024-08-09 2024-06-30 13F Marathon Petroleum COM 56585A102 24,430 -1,824 -6.95 4,091 -23.76 0.0077
2024-05-10 2024-03-31 13F Marathon Petroleum COM 56585A102 26,254 3,804 16.94 5,366 61.14 0.0105
2024-02-13 2023-12-31 13F MARATHON PETE CORP COM COM 56585A102 22,450 507 2.31 3,331 0.30 0.0071
2023-11-13 2023-09-30 13F MARATHON PETE CORP COM COM 56585A102 21,943 -1,777 -7.49 3,321 20.07 0.0079
2023-11-21 2023-06-30 13F/A-1 MARATHON PETE CORP COM COM 56585A102 23,720 -579 -2.38 2,766 133.14 0.0060
2023-08-10 2023-06-30 13F MARATHON PETE CORP COM COM 56585A102 23,720 -579 2,766 0.0060
2023-11-21 2023-03-31 13F/A-1 MARATHON PETE CORP COM COM 56585A102 24,299 1,465 6.42 1,186 -55.33 0.0026
2023-05-12 2023-03-31 13F MARATHON PETE CORP COM COM 56585A102 24,299 1,465 1,186 0.0026
2023-06-01 2022-12-31 13F/A-2 MARATHON PETE CORP COM COM 56585A102 22,834 1,135 5.23 2,655 23.26 0.0089
2023-02-14 2022-12-31 13F/A-1 MARATHON PETE CORP COM COM 56585A102 22,812 1,113 2,655 0.0056
2023-02-13 2022-12-31 13F MARATHON PETE CORP COM COM 56585A102 22,812 1,113 2,655 0.0000
2022-11-15 2022-09-30 13F MARATHON PETE CORP COM COM 56585A102 21,699 281 1.31 2,154 22.32 0.0058
2022-08-03 2022-06-30 13F MARATHON PETE COM 56585A102 21,418 385 1.83 1,761 -2.11 0.0046
2022-05-16 2022-03-31 13F MARATHON PETE COM 56585A102 21,033 503 2.45 1,799 36.91 0.0039
2022-04-04 2021-12-31 13F/A-1 MARATHON PETE COM 56585A102 20,530 5,400 35.69 1,314 40.53 0.0027
2022-02-08 2021-12-31 13F MARATHON PETE COM 56585A102 20,530 5,400 1,314 0.0027
2021-11-12 2021-09-30 13F MARATHON PETE COM 56585A102 15,130 1,315 9.52 935 11.98 0.0022
2021-08-16 2021-06-30 13F MARATHON PETE COM 56585A102 13,815 -1,302 -8.61 835 3.34 0.0019
2021-05-12 2021-03-31 13F MARATHON PETE COM 56585A102 15,117 335 2.27 808 32.03 0.0020
2021-02-12 2020-12-31 13F MARATHON PETE COM 56585A102 14,782 -114 -0.77 612 40.37 0.0016
2020-11-03 2020-09-30 13F/A-1 MARATHON PETE COM 56585A102 14,896 -30,213 -66.98 436 -74.14 0.0013
2020-08-13 2020-06-30 13F MARATHON PETE CORP COM Com 56585A102 45,109 1,676 3.86 1,686 64.33 0.0082
2020-05-15 2020-03-31 13F MARATHON PETE COM 56585A102 43,433 -6,011 -12.16 1,026 -65.56 0.0044
2020-01-30 2019-12-31 13F MARATHON PETE COM 56585A102 49,444 -12,238 -19.84 2,979 -20.50 0.0097
2019-10-16 2019-09-30 13F MARATHON PETE COM 56585A102 61,682 1,588 2.64 3,747 11.58 0.0132
2019-07-31 2019-06-30 13F MARATHON PETE COM 56585A102 60,094 -6,283 -9.47 3,358 -15.48 0.0118
2019-05-10 2019-03-31 13F MARATHON PETE COM 56585A102 66,377 4,348 7.01 3,973 8.52 0.0153
2019-02-05 2018-12-31 13F MARATHON PETE COM 56585A102 62,029 -20,057 -24.43 3,661 -44.23 0.0163
2018-11-14 2018-09-30 13F MARATHON PETE COM 56585A102 82,086 26,522 47.73 6,565 68.42 0.0249
2018-08-02 2018-06-30 13F MARATHON PETE COM 56585A102 55,564 -12,388 -18.23 3,898 -21.54 0.0159
2018-05-17 2018-03-31 13F MARATHON PETE COM 56585A102 67,952 19,868 41.32 4,968 56.62 0.0216
2018-02-12 2017-12-31 13F MARATHON PETE COM 56585A102 48,084 510 1.07 3,172 18.89 0.0135
2017-12-21 2017-09-30 13F/A-1 MARATHON PETE CORP COM COM 56585A102 47,574 -5,165 -9.79 2,668 -3.33 0.0122
2017-11-14 2017-09-30 13F MARATHON PETE CORP COM COM 56585A102 47,574 -5,165 2,668
2017-08-09 2017-06-30 13F MARATHON PETE CORP COM Com 56585A102 52,739 2,794 5.59 2,760 9.31 0.0173
2017-05-10 2017-03-31 13F MARATHON PETE CORP COM Com 56585A102 49,945 14,611 41.35 2,525 41.93 0.0159
2017-02-13 2016-12-31 13F MARATHON PETE CORP COM Com 56585A102 35,334 6,991 24.67 1,779 54.43 0.0118
2016-11-09 2016-09-30 13F MARATHON PETE CORP COM Com 56585A102 28,343 -109,406 -79.42 1,152 -77.97 0.0080
2016-08-11 2016-06-30 13F MARATHON PETE CORP COM Com 56585A102 137,749 -95,533 -40.95 5,229 -39.72 0.0382
2016-05-11 2016-03-31 13F MARATHON PETE CORP COM Com 56585A102 233,282 205,684 745.29 8,674 506.15 0.0670
2016-02-10 2015-12-31 13F MARATHON PETE CORP COM Com 56585A102 27,598 14 0.05 1,431 12.06 0.0112
2015-11-12 2015-09-30 13F MARATHON PETE CORP COM Com 56585A102 27,584 5,492 24.86 1,277 10.56 0.0105
2015-08-13 2015-06-30 13F MARATHON PETE CORP COM Com 56585A102 22,092 22,092 1,155 0.0084
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.