CASTLEARK MANAGEMENT LLC

Position in MPC — Marathon Petroleum Corp

CIK 1106832 CHICAGO, IL

Position in MPC

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$5,727,008

+$257,376 QoQ

Shares Held

22,400

0.0% QoQ

Ownership

0.008%

of shares outstanding

% of Portfolio

0.17%

of 13F equity value

Holder Rank

#374

of 1,926 holders

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Energy · as of Jun 30, 2026

CASTLEARK MANAGEMENT LLC holds $8,421,287 across 3 Oil & Gas Refining & Marketing names. MPC ranks #1 (68.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MPC	Marathon Petroleum Corp This page	22,400	$5,727,008
2	VLO	Valero Energy Corp/Tx	6,600	$1,718,904
3	SUN	Sunoco LP	14,450	$975,375

25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$5,727,008	22,400	0.0%	Shares	Sole	2026-08-14
2026-03-31	$5,469,632	22,400	-51.6%	Shares	Sole	2026-05-15
2025-09-30	$8,915,766	46,258	+1878.5%	Shares	Sole	2025-11-17
2025-06-30	$388,365	2,338	0.0%	Shares	Sole	2025-08-18
2025-03-31	$340,623	2,338	-97.6%	Shares	Sole	2025-05-15
2024-12-31	$13,725,265	98,389	+775.4%	Shares	Sole	2025-02-18
2024-09-30	$1,830,945	11,239	-35.0%	Shares	Sole	2024-11-15
2024-06-30	$2,997,560	17,279	-12.5%	Shares	Sole	2024-08-14
2024-03-31	$3,977,408	19,739	+19.3%	Shares	Sole	2024-05-16
2023-12-31	$2,453,726	16,539	0.0%	Shares	Sole	2024-02-15
2023-09-30	$2,503,012	16,539	+29.5%	Shares	Sole	2023-11-15
2023-06-30	$1,488,865	12,769	-52.5%	Shares	Sole	2023-08-16
2023-03-31	$3,622,747	26,869	0.0%	Shares	Sole	2023-05-16
2022-12-31	$3,127,282	26,869	0.0%	Shares	Sole	2023-02-10
2022-09-30	$2,668,897	26,869	-20.0%	Shares	Sole	2022-11-15
2022-06-30	$2,760,529	33,579	0.0%	Shares	Sole	2022-08-16
2022-03-31	$2,871,004	33,579	-16.4%	Shares	Sole	2022-05-16
2021-12-31	$2,571,694	40,189	-14.4%	Shares	Sole	2022-02-16
2021-09-30	$2,901,299	46,939	-18.0%	Shares	Sole	2021-11-12
2021-06-30	$3,459,286	57,254	+2.9%	Shares	Sole	2021-08-17
2021-03-31	$2,976,611	55,648	-18.8%	Shares	Sole	2021-05-14
2020-12-31	$2,834,855	68,541	+547.8%	Shares	Sole	2021-02-17
2020-09-30	$310,446	10,581	-90.7%	Shares	Sole	2020-11-16
2020-06-30	$4,262,441	114,030	+308.4%	Shares	Sole	2020-08-14
2020-03-31	$659,470	27,920	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.