Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionSegall Bryant & Hamill, Llc
Latest Disclosed Ownership25,187 shares
Latest Disclosed Value $ 5,710,945
Segall Bryant & Hamill, Llc ownership in MPC / Marathon Petroleum Corporation

On May 15, 2026 - Segall Bryant & Hamill, Llc filed a 13F-HR form disclosing ownership of 25,187 shares of Marathon Petroleum Corporation (MX:MPC) valued at $5,710,945 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 14, 2024 disclosing 0 shares of Marathon Petroleum Corporation.

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)
2026-05-15 2026-03-31 13F MARATHON PETE COM 56585A102 25,187 25,187 5,711 0.0925
2024-02-14 2023-12-31 13F MARATHON PETE CORP COM COM 56585A102 0 -33,852 -100.00 0 -100.00
2023-11-09 2023-09-30 13F MARATHON PETE CORP COM COM 56585A102 33,852 -399 -1.16 5,123 28.30 0.0593
2023-08-14 2023-06-30 13F MARATHON PETE CORP COM COM 56585A102 34,251 -36 -0.10 3,994 99,725.00 0.0418
2023-05-15 2023-03-31 13F MARATHON PETE CORP COM COM 56585A102 34,287 -1 -0.00 5 -99.90 0.0498
2023-02-14 2022-12-31 13F MARATHON PETE CORP COM COM 56585A102 34,288 -49 -0.14 3,990 16.91 0.0445
2022-11-14 2022-09-30 13F MARATHON PETE COM 56585A102 34,337 -35 -0.10 3,413 20.99 0.0407
2022-08-15 2022-06-30 13F MARATHON PETE CORP COM COM 56585A102 34,372 -17,762 -34.07 2,821 -36.71 0.0318
2022-05-13 2022-03-31 13F MARATHON PETE CORP COM COM 56585A102 52,134 -1,293 -2.42 4,457 30.17 0.0426
2022-02-14 2021-12-31 13F MARATHON PETE CORP COM COM 56585A102 53,427 877 1.67 3,424 5.19 0.0316
2021-12-30 2021-09-30 13F/A-1 MARATHON PETE CORP COM COM 56585A102 52,550 -1,431 -2.65 3,255 -0.12 0.0311
2021-11-03 2021-09-30 13F MARATHON PETE CORP COM COM 56585A102 52,550 -1,431 3,255 0.0315
2021-08-12 2021-06-30 13F MARATHON PETE CORP COM COM 56585A102 53,981 -438 -0.80 3,259 11.84 0.0316
2021-05-13 2021-03-31 13F MARATHON PETE CORP COM COM 56585A102 54,419 -1,665 -2.97 2,914 26.26 0.0288
2021-02-12 2020-12-31 13F MARATHON PETE CORP COM COM 56585A102 56,084 -15,728 -21.90 2,308 9.33 0.0257
2020-11-13 2020-09-30 13F MARATHON PETE CORP COM COM 56585A102 71,812 -112,712 -61.08 2,111 -69.36 0.0287
2020-08-14 2020-06-30 13F MARATHON PETE CORP COM COM 56585A102 184,524 -18,755 -9.23 6,889 43.28 0.1158
2020-05-14 2020-03-31 13F MARATHON PETE CORP COM COM 56585A102 203,279 -36,199 -15.12 4,808 -66.66 0.0977
2020-02-11 2019-12-31 13F MARATHON PETE CORP COM COM 56585A102 239,478 -11,127 -4.44 14,423 -5.21 0.2237
2019-11-12 2019-09-30 13F MARATHON PETE CORP COM COM 56585A102 250,605 -2,678 -1.06 15,216 7.53 0.2362
2019-08-14 2019-06-30 13F MARATHON PETE CORP COM COM 56585A102 253,283 76,136 42.98 14,150 33.38 0.2138
2019-05-15 2019-03-31 13F MARATHON PETE CORP COM COM 56585A102 177,147 40,929 30.05 10,609 31.99 0.1647
2019-02-14 2018-12-31 13F Marathon Petroleum COM 56585A102 136,218 3,656 2.76 8,038 -24.18 0.1385
2018-11-14 2018-09-30 13F Marathon Petroleum COM 56585A102 132,562 -5,231 -3.80 10,601 9.65 0.1561
2018-08-08 2018-06-30 13F Marathon Petroleum COM 56585A102 137,793 125,992 1,067.64 9,668 1,020.28 0.1473
2018-05-15 2018-03-31 13F Marathon Petroleum COM 56585A102 11,801 0 0.00 863 10.78 0.0200
2018-02-15 2017-12-31 13F Marathon Petroleum COM 56585A102 11,801 0 0.00 779 17.67 0.0171
2017-11-14 2017-09-30 13F Marathon Petroleum -Common Stock 56585A102 11,801 62 0.53 662 7.82 0.0154
2017-08-14 2017-06-30 13F Marathon Petroleum -Common Stock 56585A102 11,739 -148 -1.25 614 2.16 0.0145
2017-05-12 2017-03-31 13F Marathon Petroleum -Common Stock 56585A102 11,887 0 0.00 601 0.33 0.0145
2017-02-14 2016-12-31 13F Marathon Petroleum -Common Stock 56585A102 11,887 196 1.68 599 26.11 0.0150
2016-11-14 2016-09-30 13F Marathon Petroleum -Common Stock 56585A102 11,691 -207 -1.74 475 5.09 0.0122
2016-08-10 2016-06-30 13F Marathon Petroleum -Common Stock 56585A102 11,898 400 3.48 452 5.85 0.0119
2016-05-12 2016-03-31 13F Marathon Petroleum -Common Stock 56585A102 11,498 -568 -4.71 427 -31.79 0.0106
2016-02-12 2015-12-31 13F Marathon Petroleum -Common Stock 56585A102 12,066 0 0.00 626 11.99 0.0150
2015-11-12 2015-09-30 13F Marathon Petroleum -Common Stock 56585A102 12,066 0 0.00 559 -11.41 0.0136
2015-08-12 2015-06-30 13F Marathon Petroleum -Common Stock 56585A102 12,066 6,033 100.00 631 2.10 0.0141
2015-05-14 2015-03-31 13F Marathon Petroleum -Common Stock 56585A102 6,033 531 9.65 618 24.35 0.0139
2015-02-12 2014-12-31 13F Marathon Petroleum -Common Stock 56585A102 5,502 42 0.77 497 7.58 0.0112
2014-11-13 2014-09-30 13F Marathon Petroleum -Common Stock 56585A102 5,460 1,000 22.42 462 32.76 0.0107
2014-08-14 2014-06-30 13F Marathon Petroleum -Common Stock 56585A102 4,460 1,999 81.23 348 62.62 0.0083
2014-05-15 2014-03-31 13F/A-1 Marathon Petroleum -Common Stock 56585A102 2,461 -174 -6.60 214 -11.57 0.0051
2014-05-14 2014-03-31 13F Marathon Petroleum -Common Stock 56585A102 2,461 214
2014-03-12 2013-12-31 13F/A-1 Marathon Petroleum -Common Stock 56585A102 2,635 288 12.27 242 15.24 0.0056
2014-02-05 2013-12-31 13F Marathon Petroleum -Common Stock 56585A102 2,635 242
2013-05-23 2013-03-31 13F Marathon Petroleum -Common Stock 56585A102 2,347 2,347 210 0.0056
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.