Marathon Petroleum Corporation
MX ˙ BMV ˙ US56585A1025
SecurityMX:MPC / Marathon Petroleum Corporation
InstitutionFirst Citizens Bank & Trust Co
Latest Disclosed Ownership12,578 shares
Latest Disclosed Value $ 3,071,295
First Citizens Bank & Trust Co reports 2.22% decrease in ownership of MPC / Marathon Petroleum Corporation

On May 13, 2026 - First Citizens Bank & Trust Co filed a 13F-HR form disclosing ownership of 12,578 shares of Marathon Petroleum Corporation (MX:MPC) valued at $3,071,295 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 12,864 shares of Marathon Petroleum Corporation. This represents a change in shares of -2.22% 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 12,578 -286 -2.22 3,071 46.80 0.0348
2026-02-18 2025-12-31 13F MARATHON PETE COM 56585A102 12,864 -12,736 -49.75 2,092 -57.60 0.0437
2025-10-31 2025-09-30 13F MARATHON PETE COM 56585A102 25,600 266 1.05 4,934 17.25 0.1064
2025-07-30 2025-06-30 13F MARATHON PETE COM 56585A102 25,334 -5,939 -18.99 4,208 -7.64 0.0762
2025-04-14 2025-03-31 13F MARATHON PETE COM 56585A102 31,273 -701 -2.19 4,556 2.15 0.1157
2025-01-21 2024-12-31 13F MARATHON PETE COM 56585A102 31,974 -3,360 -9.51 4,460 -22.52 0.0819
2024-10-17 2024-09-30 13F MARATHON PETE COM 56585A102 35,334 -54,232 -60.55 5,756 -62.95 0.1265
2024-07-19 2024-06-30 13F MARATHON PETE COM 56585A102 89,566 -1,314 -1.45 15,538 -15.15 0.2931
2024-04-15 2024-03-31 13F MARATHON PETE COM 56585A102 90,880 15,367 20.35 18,312 63.46 0.3507
2024-01-22 2023-12-31 13F MARATHON PETE COM 56585A102 75,513 -21,854 -22.44 11,203 -23.97 0.2034
2023-10-30 2023-09-30 13F MARATHON PETE COM 56585A102 97,367 -5,576 -5.42 14,736 22.76 0.2870
2023-08-15 2023-06-30 13F MARATHON PETE COM 56585A102 102,943 17,558 20.56 12,003 4.27 0.2206
2023-05-11 2023-03-31 13F MARATHON PETE COM 56585A102 85,385 10,423 13.90 11,512 143,800.00 0.2297
2023-01-24 2022-12-31 13F MARATHON PETE COM 56585A102 74,962 -5,326 -6.63 9 -99.90 0.2644
2022-10-20 2022-09-30 13F MARATHON PETE COM 56585A102 80,288 -12,941 -13.88 7,975 4.06 0.2618
2022-07-26 2022-06-30 13F MARATHON PETE COM 56585A102 93,229 -17,983 -16.17 7,664 -19.39 0.2710
2022-04-26 2022-03-31 13F MARATHON PETE COM 56585A102 111,212 2,305 2.12 9,508 36.43 0.3694
2022-03-11 2021-12-31 13F MARATHON PETE COM 56585A102 108,907 3,316 3.14 6,969 6.79 0.2726
2021-10-15 2021-09-30 13F MARATHON PETE COM 56585A102 105,591 -1,094 -1.03 6,526 1.26 0.3117
2021-07-14 2021-06-30 13F MARATHON PETE COM 56585A102 106,685 -4,403 -3.96 6,445 8.47 0.3055
2021-04-14 2021-03-31 13F MARATHON PETE COM 56585A102 111,088 -4,938 -4.26 5,942 23.82 0.2802
2021-01-13 2020-12-31 13F MARATHON PETE COM 56585A102 116,026 20,889 21.96 4,799 71.95 0.2451
2020-10-15 2020-09-30 13F MARATHON PETE COM 56585A102 95,137 -24,585 -20.54 2,791 -37.63 0.1966
2020-07-15 2020-06-30 13F MARATHON PETE COM 56585A102 119,722 57,560 92.60 4,475 204.63 0.3740
2020-04-17 2020-03-31 13F MARATHON PETE COM 56585A102 62,162 -10,649 -14.63 1,469 -66.51 0.1776
2020-01-15 2019-12-31 13F/A-1 MARATHON PETE COM 56585A102 72,811 7,122 10.84 4,387 9.92 0.4221
2020-01-15 2019-12-31 13F MARATHON PETE COM 56585A102 65,689 0 3,991 299,370.6540
2019-10-17 2019-09-30 13F MARATHON PETE COM 56585A102 65,689 -133 -0.20 3,991 8.51 0.4809
2019-07-11 2019-06-30 13F/A-1 MARATHON PETE COM 56585A102 65,822 -714 -1.07 3,678 -7.66 0.4012
2019-07-11 2019-06-30 13F MARATHON PETE COM 56585A102 66,536 0 3,983
2019-04-12 2019-03-31 13F MARATHON PETE COM 56585A102 66,536 11,025 19.86 3,983 21.58 0.4438
2019-01-15 2018-12-31 13F MARATHON PETE COM 56585A102 55,511 -1,248 -2.20 3,276 -27.83 0.3984
2018-10-18 2018-09-30 13F MARATHON PETE COM 56585A102 56,759 380 0.67 4,539 14.74 0.5042
2018-07-11 2018-06-30 13F MARATHON PETE COM 56585A102 56,379 -9,089 -13.88 3,956 -17.34 0.4858
2018-04-11 2018-03-31 13F MARATHON PETE COM 56585A102 65,468 1,176 1.83 4,786 12.82 0.6506
2018-01-10 2017-12-31 13F MARATHON PETE COM 56585A102 64,292 4,280 7.13 4,242 26.02 0.5703
2017-10-12 2017-09-30 13F MARATHON PETE COM 56585A102 60,012 49,180 454.03 3,366 493.65 0.4382
2017-07-24 2017-06-30 13F MARATHON PETE COM 56585A102 10,832 -12,045 -52.65 567 -50.95 0.0729
2017-04-25 2017-03-31 13F MARATHON PETE COM 56585A102 22,877 24 0.11 1,156 0.43 0.1401
2017-02-06 2016-12-31 13F MARATHON PETE COM 56585A102 22,853 0 0.00 1,151 24.03 0.1261
2016-10-28 2016-09-30 13F MARATHON PETE COM 56585A102 22,853 -887 -3.74 928 3.00 0.0845
2016-07-28 2016-06-30 13F MARATHON PETE COM 56585A102 23,740 -1,504 -5.96 901 -4.05 0.0807
2016-04-19 2016-03-31 13F MARATHON PETE COM 56585A102 25,244 -255,134 -91.00 939 -93.54 0.0784
2016-02-03 2015-12-31 13F MARATHON PETE COM 56585A102 280,378 -5,547 -1.94 14,535 9.72 1.0612
2015-11-03 2015-09-30 13F/A-1 MARATHON PETE COM 56585A102 285,925 11,421 4.16 13,247 -7.74 0.9840
2015-11-03 2015-09-30 13F MARATHON PETE COM 56585A102 285,925 13,247
2015-07-29 2015-06-30 13F MARATHON PETE COM 56585A102 274,504 128,016 87.39 14,359 -4.27 0.9942
2015-05-14 2015-03-31 13F MARATHON PETE COM 56585A102 146,488 146,488 0.00 14,999 1.0374
2015-01-27 2014-12-31 13F MARATHON PETE COM 56585A102 0 -147,292 -100.00 0 -100.00
2014-10-08 2014-09-30 13F MARATHON PETE COM 56585A102 147,292 -22,105 -13.05 12,471 -5.70 1.0222
2014-08-05 2014-06-30 13F MARATHON PETE COM 56585A102 169,397 3,366 2.03 13,225 -8.48 1.1269
2014-04-10 2014-03-31 13F MARATHON PETE COM 56585A102 166,031 35,238 26.94 14,451 20.45 1.3069
2014-02-13 2013-12-31 13F MARATHON PETE COM 56585A102 130,793 -32,729 -20.02 11,998 14.07 1.0906
2013-10-25 2013-09-30 13F MARATHON PETE COM 56585A102 163,522 7,616 4.88 10,518 -5.06 0.4020
2013-08-06 2013-06-30 13F MARATHON PETE COM 56585A102 155,906 155,906 11,078 0.4548
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.