Calamos Advisors LLC

Position in MPC — Marathon Petroleum Corp

CIK 1316507 NAPERVILLE, IL

Back to MPC Full portfolio

Position in MPC

as of Jun 30, 2026 · filed Jul 31, 2026 Compact

Position Value

$74,383,095

-$3,549,149 QoQ

Shares Held

290,934

-8.8% QoQ

Ownership

0.104%

of shares outstanding

% of Portfolio

0.42%

of 13F equity value

Holder Rank

#81

of 1,926 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in MPC Over Time

Shares Held

Position Value (USD)

Position in Oil & Gas Refining & Marketing

Energy · as of Jun 30, 2026

Calamos Advisors LLC holds $103,023,223 across 3 Oil & Gas Refining & Marketing names. MPC ranks #1 (72.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MPC	Marathon Petroleum Corp This page	290,934	$74,383,095
2	VLO	Valero Energy Corp/Tx	65,911	$17,165,860
3	PSX	Phillips 66	67,875	$11,474,268

All Filings in MPC

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26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$74,383,095	290,934	-8.8%	Shares	Sole	2026-07-31
2026-03-31	$77,932,244	319,159	+1.9%	Shares	Sole	2026-05-04
2025-12-31	$50,936,366	313,204	-6.8%	Shares	Sole	2026-01-29
2025-09-30	$64,800,344	336,206	+0.3%	Shares	Sole	2025-10-20
2025-06-30	$55,685,387	335,232	+21.5%	Shares	Sole	2025-08-08
2025-03-31	$40,209,565	275,994	+0.8%	Shares	Sole	2025-04-29
2024-12-31	$38,193,147	273,786	+0.2%	Shares	Sole	2025-01-24
2024-09-30	$44,500,495	273,160	+13.5%	Shares	Sole	2024-11-07
2024-06-30	$41,763,054	240,737	-2.1%	Shares	Sole	2024-07-25
2024-03-31	$49,524,267	245,778	-34.1%	Shares	Sole	2024-05-08
2023-12-31	$55,329,971	372,944	-0.9%	Shares	Sole	2024-01-31
2023-09-30	$56,928,357	376,162	+0.1%	Shares	Sole	2023-10-26
2023-06-30	$43,798,341	375,629	-24.6%	Shares	Sole	2023-07-28
2023-03-31	$67,145,070	497,998	-11.7%	Shares	Sole	2023-05-04
2022-12-31	$65,641,050	563,975	-11.7%	Shares	Sole	2023-01-26
2022-09-30	$63,452,997	638,810	-8.4%	Shares	Sole	2022-10-24
2022-06-30	$57,312,290	697,145	+21.5%	Shares	Sole	2022-08-01
2022-03-31	$49,047,160	573,651	+12.3%	Shares	Sole	2022-05-03
2021-12-31	$32,677,389	510,664	-7.0%	Shares	Sole	2022-02-01
2021-09-30	$33,945,186	549,186	+7.8%	Shares	Sole	2021-10-26
2021-06-30	$30,792,811	509,646	+22.3%	Shares	Sole	2021-07-22
2021-03-31	$22,293,027	416,770	-10.2%	Shares	Sole	2021-04-12
2020-12-31	$19,199,973	464,216	-25.0%	Shares	Sole	2021-01-27
2020-09-30	$18,167,973	619,222	-13.5%	Shares	Sole	2020-10-26
2020-06-30	$26,754,136	715,734	-37.5%	Shares	Sole	2020-07-27
2020-03-31	$27,065,118	1,145,856	—	Shares	Sole	2020-04-28
No filing history on record for this holder in this stock.