Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionSterling Capital Management LLC
Latest Disclosed Ownership43,845 shares
Latest Disclosed Value $ 10,706,072
Sterling Capital Management LLC reports 10.61% decrease in ownership of MPC / Marathon Petroleum Corporation

On April 22, 2026 - Sterling Capital Management LLC filed a 13F-HR form disclosing ownership of 43,845 shares of Marathon Petroleum Corporation (MX:MPC) valued at $10,706,072 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 49,050 shares of Marathon Petroleum Corporation. This represents a change in shares of -10.61% 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)
2026-04-22 2026-03-31 13F MARATHON PETROLEUM COM 56585A102 43,845 -5,205 -10.61 10,706 34.21 0.1467
2026-02-13 2025-12-31 13F MARATHON PETROLEUM COM 56585A102 49,050 10,968 28.80 7,977 8.69 0.1297
2025-11-12 2025-09-30 13F MARATHON PETROLEUM COM 56585A102 38,082 16,187 73.93 7,340 101.84 0.1075
2025-08-08 2025-06-30 13F/A-1 MARATHON PETROLEUM COM 56585A102 21,895 20,097 1,117.74 3,637 1,293.10 0.0517
2025-08-06 2025-06-30 13F MARATHON PETROLEUM COM 56585A102 21,895 20,097 3,637 0.0517
2025-05-13 2025-03-31 13F MARATHON PETROLEUM COM 56585A102 1,798 -33 -1.80 262 2.35 0.0041
2025-02-13 2024-12-31 13F MARATHON PETROLEUM COM 56585A102 1,831 -18,670 -91.07 255 -92.36 0.0035
2024-11-12 2024-09-30 13F MARATHON PETROLEUM COM 56585A102 20,501 -152,559 -88.15 3,340 -68.24 0.0432
2019-11-14 2019-09-30 13F MARATHON PETROLEUM COM 56585A102 173,060 55,280 46.93 10,513 59.72 0.0997
2019-08-14 2019-06-30 13F MARATHON PETROLEUM COM 56585A102 117,780 -135,769 -53.55 6,582 -56.63 0.0635
2019-05-15 2019-03-31 13F MARATHON PETROLEUM COM 56585A102 253,549 14,930 6.26 15,175 7.77 0.1500
2019-02-14 2018-12-31 13F MARATHON PETE CORP COM COM 56585A102 238,619 104,880 78.42 14,081 31.66 0.1528
2018-11-01 2018-09-30 13F MARATHON PETE CORP COM COM 56585A102 133,739 -4,910 -3.54 10,695 9.94 0.0964
2018-08-14 2018-06-30 13F MARATHON PETE CORP COM COM 56585A102 138,649 -17,080 -10.97 9,728 -14.55 0.0907
2018-05-15 2018-03-31 13F MARATHON PETE CORP COM COM 56585A102 155,729 2,650 1.73 11,385 12.72 0.1072
2018-02-15 2017-12-31 13F MARATHON PETE CORP COM COM 56585A102 153,079 -18,500 -10.78 10,100 4.97 0.0914
2017-11-15 2017-09-30 13F MARATHON PETE CORP COM COM 56585A102 171,579 -4,330 -2.46 9,622 4.53 0.0906
2017-08-15 2017-06-30 13F MARATHON PETE CORP COM COM 56585A102 175,909 -9,258 -5.00 9,205 -1.63 0.0888
2017-05-15 2017-03-31 13F MARATHON PETE CORP COM COM 56585A102 185,167 14,697 8.62 9,358 9.03 0.0881
2017-02-14 2016-12-31 13F MARATHON PETE CORP COM COM 56585A102 170,470 170,470 0.00 8,583 0.0774
2016-11-14 2016-09-30 13F MARATHON PETE CORP COM COM 56585A102 0 -9,400 -100.00 0 -100.00
2016-08-19 2016-06-30 13F MARATHON PETE CORP COM COM 56585A102 9,400 -170,920 -94.79 357 -94.67 0.0033
2016-05-17 2016-03-31 13F MARATHON PETE CORP COM COM 56585A102 180,320 45,230 33.48 6,704 -4.27 0.0610
2016-02-17 2015-12-31 13F MARATHON PETE CORP COM COM 56585A102 135,090 -1,690 -1.24 7,003 10.51 0.0620
2015-11-16 2015-09-30 13F MARATHON PETE CORP COM COM 56585A102 136,780 4,570 3.46 6,337 -8.37 0.0568
2015-08-17 2015-06-30 13F MARATHON PETE CORP COM COM 56585A102 132,210 69,550 111.00 6,916 7.79 0.0624
2015-05-19 2015-03-31 13F MARATHON PETE CORP COM COM 56585A102 62,660 270 0.43 6,416 13.94 0.0574
2015-05-22 2014-12-31 13F/A-1 MARATHON PETE CORP COM COM 56585A102 62,390 260 0.42 5,631 7.03 0.0491
2015-02-13 2014-12-31 13F MARATHON PETE CORP COM COM 56585A102 62,390 5,631
2014-11-14 2014-09-30 13F MARATHON PETE CORP COM COM 56585A102 62,130 -1,910 -2.98 5,261 5.24 0.0638
2014-08-15 2014-06-30 13F MARATHON PETE CORP COM COM 56585A102 64,040 12,450 24.13 4,999 11.34 0.0431
2014-05-16 2014-03-31 13F MARATHON PETE CORP COM COM 56585A102 51,590 -1,090 -2.07 4,490 32.53 0.0383
2013-11-15 2013-09-30 13F MARATHON PETE CORP COM COM 56585A102 52,680 52,680 3,388 0.0397
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.