Nisa Investment Advisors, Llc reports 3.45% decrease in ownership of MPC / Marathon Petroleum Corporation

Marathon Petroleum Corporation

MX ˙ BMV ˙ US56585A1025

Security	MX:MPC / Marathon Petroleum Corporation
Institution	Nisa Investment Advisors, Llc
Latest Disclosed Ownership	177,731 shares
Latest Disclosed Value	$ 43,398,355

On April 30, 2026 - Nisa Investment Advisors, Llc filed a 13F-HR form disclosing ownership of 177,731 shares of Marathon Petroleum Corporation (MX:MPC) valued at $43,398,355 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 15, 2026 disclosing 184,085 shares of Marathon Petroleum Corporation. This represents a change in shares of -3.45% 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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-04-30	2026-03-31	13F	MARATHON PETROLEUM	COM	56585A102	177,731	-6,354	-3.45	43,398	44.96	0.1605
2026-01-15	2025-12-31	13F	MARATHON PETROLEUM	COM	56585A102	184,085	3,620	2.01	29,938	-13.93	0.0988
2025-10-23	2025-09-30	13F	MARATHON PETROLEUM	COM	56585A102	180,465	-13,804	-7.11	34,783	7.78	0.1342
2025-07-31	2025-06-30	13F	MARATHON PETROLEUM	COM	56585A102	194,269	4,179	2.20	32,270	16.52	0.1455
2025-04-30	2025-03-31	13F	MARATHON PETROLEUM	COM	56585A102	190,090	-12,928	-6.37	27,694	-2.21	0.1385
2025-01-17	2024-12-31	13F	MARATHON PETROLEUM	COM	56585A102	203,018	90	0.04	28,321	-14.33	0.1098
2024-10-24	2024-09-30	13F	MARATHON PETROLEUM	COM	56585A102	202,928	-2,068	-1.01	33,059	-7.04	0.1957
2024-07-19	2024-06-30	13F	MARATHON PETROLEUM	COM	56585A102	204,996	-4,495	-2.15	35,563	-15.75	0.2236
2024-05-02	2024-03-31	13F	MARATHON PETROLEUM	COM	56585A102	209,491	-5,852	-2.72	42,212	32.13	0.2744
2024-01-25	2023-12-31	13F	MARATHON PETROLEUM	XXX	56585A102	215,343	-3,719	-1.70	31,948	-3.63	0.2264
2023-11-02	2023-09-30	13F	MARATHON PETROLEUM	XXX	56585A102	219,062	-32,560	-12.94	33,153	13.00	0.2529
2023-08-11	2023-06-30	13F	MARATHON PETROLEUM	COM	56585A102	251,622	-2,897	-1.14	29,339	86,191.18	0.2152
2023-05-02	2023-03-31	13F	MARATHON PETROLEUM	COM	56585A102	254,519	-4,733	-1.83	34	13.33	0.2688
2023-02-02	2022-12-31	13F	MARATHON PETROLEUM	COM	56585A102	259,252	-7,832	-2.93	30	-99.89	0.2380
2022-11-07	2022-09-30	13F	MARATHON PETROLEUM	COM	56585A102	267,084	-6,690	-2.44	26,609	18.23	0.2264
2022-08-03	2022-06-30	13F	MARATHON PETROLEUM	COM	56585A102	273,774	-3,000	-1.08	22,507	-4.89	0.1969
2022-04-29	2022-03-31	13F	MARATHON PETROLEUM	COM	56585A102	276,774	281	0.10	23,664	19.29	0.1667
2022-02-03	2021-12-31	13F	MARATHON PETROLEUM	COM	56585A102	276,493	-4,304	-1.53	19,838	14.30	0.1488
2021-10-18	2021-09-30	13F	MARATHON PETROLEUM	COM	56585A102	280,797	0	0.00	17,356	2.30	0.1053
2021-08-06	2021-06-30	13F	MARATHON PETROLEUM	COM	56585A102	280,797	-7,667	-2.66	16,966	9.95	0.1059
2021-04-26	2021-03-31	13F	MARATHON PETROLEUM	COM	56585A102	288,464	-666,220	-69.78	15,430	-60.92	0.0979
2021-01-25	2020-12-31	13F	MARATHON PETROLEUM	COM	56585A102	954,684	710,667	291.24	39,486	451.56	0.2540
2020-10-20	2020-09-30	13F	MARATHON PETROLEUM	COM	56585A102	244,017	4,245	1.77	7,159	-20.13	0.0576
2020-07-27	2020-06-30	13F	MARATHON PETROLEUM	COM	56585A102	239,772	3,420	1.45	8,963	60.54	0.0824
2020-04-17	2020-03-31	13F	MARATHON PETROLEUM	COM	56585A102	236,352	-43,071	-15.41	5,583	-66.84	0.0622
2020-01-17	2019-12-31	13F	MARATHON PETROLEUM	COM	56585A102	279,423	-32,577	-10.44	16,835	-11.18	0.1441
2019-10-17	2019-09-30	13F	MARATHON PETROLEUM	COM	56585A102	312,000	10,897	3.62	18,954	12.65	0.1682
2019-07-12	2019-06-30	13F	MARATHON PETROLEUM	COM	56585A102	301,103	-15,334	-4.85	16,826	-11.16	0.1597
2019-04-17	2019-03-31	13F	MARATHON PETROLEUM	COM	56585A102	316,437	-18,244	-5.45	18,939	-4.11	0.1843
2019-01-17	2018-12-31	13F	MARATHON PETROLEUM	COM	56585A102	334,681	72,577	27.69	19,750	-5.76	0.2200
2018-10-16	2018-09-30	13F	MARATHON PETROLEUM	COM	56585A102	262,104	10,835	4.31	20,958	18.89	0.1910
2018-07-18	2018-06-30	13F	MARATHON PETROLEUM	COM	56585A102	251,269	20,475	8.87	17,628	6.92	0.1815
2018-04-10	2018-03-31	13F	MARATHON PETROLEUM	COM	56585A102	230,794	-11,722	-4.83	16,487	3.04	0.1722
2018-01-12	2017-12-31	13F	MARATHON PETROLEUM	COM	56585A102	242,516	-4,912	-1.99	16,000	15.31	0.1648
2017-10-13	2017-09-30	13F	MARATHON PETROLEUM	COM	56585A102	247,428	-12,617	-4.85	13,876	2.07	0.1561
2017-07-18	2017-06-30	13F	MARATHON PETROLEUM	COM	56585A102	260,045	2,730	1.06	13,594	4.53	0.1598
2017-04-19	2017-03-31	13F	MARATHON PETROLEUM	COM	56585A102	257,315	-10,442	-3.90	13,005	-3.54	0.1545
2017-01-24	2016-12-31	13F	MARATHON PETROLEUM	COM	56585A102	267,757	16,185	6.43	13,482	32.03	0.1638
2016-10-12	2016-09-30	13F	MARATHON PETROLEUM	COM	56585A102	251,572	18,591	7.98	10,211	15.46	0.1322
2016-07-15	2016-06-30	13F	MARATHON PETROLEUM	COM	56585A102	232,981	28,373	13.87	8,844	16.26	0.1189
2016-04-29	2016-03-31	13F	MARATHON PETROLEUM	COM	56585A102	204,608	-3,020	-1.45	7,607	-29.33	0.1093
2016-01-11	2015-12-31	13F	MARATHON PETROLEUM	COM	56585A102	207,628	-11,130	-5.09	10,764	6.04	0.1539
2015-10-19	2015-09-30	13F	MARATHON PETROLEUM	COM	56585A102	218,758	7,044	3.33	10,151	-8.34	0.1552
2015-07-30	2015-06-30	13F	MARATHON PETROLEUM	COM	56585A102	211,714	101,057	91.32	11,075	-2.25	0.1570
2015-04-09	2015-03-31	13F	MARATHON PETROLEUM	COM	56585A102	110,657	-1,989	-1.77	11,330	11.44	0.1560
2015-02-06	2014-12-31	13F	MARATHON PETROLEUM	COM	56585A102	112,646	-4,250	-3.64	10,167	2.72	0.1397
2014-10-24	2014-09-30	13F	MARATHON PETROLEUM	COM	56585A102	116,896	2,150	1.87	9,898	10.49	0.1387
2014-07-29	2014-06-30	13F	MARATHON PETROLEUM	COM	56585A102	114,746	-600	-0.52	8,958	-10.78	0.1244
2014-05-01	2014-03-31	13F	MARATHON PETROLEUM	COM	56585A102	115,346	0	0.00	10,040	-5.11	0.1425
2014-01-23	2013-12-31	13F	MARATHON PETROLEUM	COM	56585A102	115,346	-1,800	-1.54	10,581	40.42	0.1511
2013-10-22	2013-09-30	13F	MARATHON PETROLEUM	COM	56585A102	117,146	-1,200	-1.01	7,535	-10.40	0.1154
2013-07-17	2013-06-30	13F	MARATHON PETROLEUM	COM	56585A102	118,346	118,346		8,410		0.1303

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.