Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionIngalls & Snyder Llc
Latest Disclosed Ownership14,744 shares
Latest Disclosed Value $ 3,600
Ingalls & Snyder Llc reports 0.71% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 13, 2026 - Ingalls & Snyder Llc filed a 13F-HR form disclosing ownership of 14,744 shares of Marathon Petroleum Corporation (MX:MPC) valued at $3,600 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 14,849 shares of Marathon Petroleum Corporation. This represents a change in shares of -0.71% 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)
2026-05-13 2026-03-31 13F MARATHON PETE COM 56585A102 14,744 -105 -0.71 4 50.00 0.1274
2026-02-13 2025-12-31 13F MARATHON PETE COM 56585A102 14,849 -326 -2.15 2 0.00 0.0887
2025-11-07 2025-09-30 13F MARATHON PETE COM 56585A102 15,175 -424 -2.72 3 0.00 0.0956
2025-07-31 2025-06-30 13F MARATHON PETE COM 56585A102 15,599 -75 -0.48 3 0.00 0.0919
2025-05-12 2025-03-31 13F MARATHON PETE COM 56585A102 15,674 0 0.00 2 0.00 0.0751
2025-01-29 2024-12-31 13F MARATHON PETE COM 56585A102 15,674 -251 -1.58 2 0.00 0.0858
2024-11-14 2024-09-30 13F MARATHON PETE COM 56585A102 15,925 400 2.58 3 0.00 0.1012
2024-07-31 2024-06-30 13F MARATHON PETE COM 56585A102 15,525 0 0.00 3 -33.33 0.1158
2024-05-13 2024-03-31 13F MARATHON PETE COM 56585A102 15,525 -60 -0.38 3 50.00 0.1381
2024-01-29 2023-12-31 13F MARATHON PETE COM 56585A102 15,585 0 0.00 2 0.00 0.1045
2023-11-02 2023-09-30 13F MARATHON PETE COM 56585A102 15,585 2,650 20.49 2 100.00 0.1136
2023-07-27 2023-06-30 13F MARATHON PETE COM 56585A102 12,935 1,000 8.38 2 0.00 0.0722
2023-05-09 2023-03-31 13F MARATHON PETE COM 56585A102 11,935 -50 -0.42 2 0.00 0.0827
2023-01-31 2022-12-31 13F MARATHON PETE COM 56585A102 11,985 -200 -1.64 1 -99.92 0.0759
2022-10-21 2022-09-30 13F MARATHON PETE COM 56585A102 12,185 -200 -1.61 1,210 18.86 0.0675
2022-08-11 2022-06-30 13F MARATHON PETE COM 56585A102 12,385 -6,225 -33.45 1,018 -36.02 0.0532
2022-05-09 2022-03-31 13F MARATHON PETE COM 56585A102 18,610 -7,200 -27.90 1,591 -3.69 0.0711
2022-02-11 2021-12-31 13F MARATHON PETE COM 56585A102 25,810 -500 -1.90 1,652 1.60 0.0745
2021-10-27 2021-09-30 13F MARATHON PETE COM 56585A102 26,310 -200 -0.75 1,626 1.50 0.0745
2021-08-03 2021-06-30 13F MARATHON PETE COM 56585A102 26,510 -12,800 -32.56 1,602 -23.82 0.0711
2021-04-21 2021-03-31 13F MARATHON PETE CO 56585A102 39,310 -350 -0.88 2,103 28.23 0.0982
2021-01-27 2020-12-31 13F MARATHON PETE COM 56585A102 39,660 -2,031 -4.87 1,640 34.10 0.0810
2020-10-21 2020-09-30 13F MARATHON PETE COM 56585A102 41,691 -3,432 -7.61 1,223 -27.50 0.0839
2020-07-31 2020-06-30 13F MARATHON PETE COM 56585A102 45,123 -3,550 -7.29 1,687 46.70 0.0969
2020-04-22 2020-03-31 13F MARATHON PETE COM 56585A102 48,673 -1,500 -2.99 1,150 -61.96 0.0775
2020-01-15 2019-12-31 13F MARATHON PETE COM 56585A102 50,173 1,740 3.59 3,023 2.75 0.1637
2019-10-16 2019-09-30 13F MARATHON PETE COM 56585A102 48,433 -312 -0.64 2,942 8.00 0.1436
2019-07-11 2019-06-30 13F MARATHON PETE COM 56585A102 48,745 350 0.72 2,724 -5.94 0.1310
2019-04-11 2019-03-31 13F MARATHON PETE COM 56585A102 48,395 2 0.00 2,896 1.40 0.1380
2019-01-24 2018-12-31 13F MARATHON PETE COM 56585A102 48,393 131 0.27 2,856 -26.01 0.1508
2018-10-24 2018-09-30 13F MARATHON PETE COM 56585A102 48,262 -450 -0.92 3,860 12.93 0.1627
2018-08-10 2018-06-30 13F MARATHON PETE COM 56585A102 48,712 -3,225 -6.21 3,418 -9.98 0.1586
2018-04-17 2018-03-31 13F MARATHON PETE COM 56585A102 51,937 500 0.97 3,797 11.87 0.1852
2018-01-19 2017-12-31 13F MARATHON PETE COM 56585A102 51,437 -10 -0.02 3,394 17.64 0.1562
2017-10-20 2017-09-30 13F MARATHON PETE COM 56585A102 51,447 300 0.59 2,885 7.77 0.1503
2017-07-28 2017-06-30 13F MARATHON PETE COM 56585A102 51,147 1,625 3.28 2,677 6.95 0.1453
2017-05-09 2017-03-31 13F MARATHON PETE COM 56585A102 49,522 1,670 3.49 2,503 3.90 0.1335
2017-01-25 2016-12-31 13F MARATHON PETE COM 56585A102 47,852 -400 -0.83 2,409 22.97 0.1312
2016-11-03 2016-09-30 13F MARATHON PETE COM 56585A102 48,252 240 0.50 1,959 7.46 0.1092
2016-08-11 2016-06-30 13F MARATHON PETE COM 56585A102 48,012 4,100 9.34 1,823 11.70 0.1076
2016-04-29 2016-03-31 13F MARATHON PETROLEUM COMMON 056585A10 43,912 -400 -0.90 1,632 -28.95 0.1038
2016-01-27 2015-12-31 13F MARATHON PETROLEUM COMMON 056585A10 44,312 202 0.46 2,297 12.43 0.1468
2015-10-27 2015-09-30 13F MARATHON PETROLEUM COMMON 056585A10 44,110 -100 -0.23 2,043 -11.63 0.1336
2015-07-10 2015-06-30 13F MARATHON PETROLEUM COMMON 056585A10 44,210 21,755 96.88 2,312 0.57 0.1276
2015-04-15 2015-03-31 13F MARATHON PETROLEUM COMMON 056585A10 22,455 22,455 2,299 0.1266
2015-01-28 2014-12-31 13F MARATHON PETROLEUM COMMON 056585A10 0 -23,030 -100.00 0 -100.00
2014-10-28 2014-09-30 13F MARATHON PETROLEUM COMMON 056585A10 23,030 549 2.44 1,949 11.05 0.1049
2014-07-30 2014-06-30 13F MARATHON PETROLEUM COMMON 056585A10 22,481 -95 -0.42 1,755 -10.69 0.0863
2014-05-02 2014-03-31 13F MARATHON PETROLEUM COMMON 056585A10 22,576 -750 -3.22 1,965 -8.13 0.1053
2014-01-24 2013-12-31 13F MARATHON PETROLEUM COMMON 056585A10 23,326 250 1.08 2,139 44.14 0.1179
2013-11-12 2013-09-30 13F MARATHON PETROLEUM COMMON 056585A10 23,076 -200 -0.86 1,484 -10.22 0.0887
2013-08-09 2013-06-30 13F/A-1 MARATHON PETROLEUM COMMON 056585A10 23,276 23,276 1,653 0.1053
2013-08-08 2013-06-30 13F MARATHON PETROLEUM COMMON 056585A10 21,116 1,500
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.