CASTLEARK MANAGEMENT LLC

Position in FANG — Diamondback Energy, Inc.

CIK 1106832 CHICAGO, IL

Position in FANG

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$28,683,505

+$26,987,055 QoQ

Shares Held

145,020

+1123.3% QoQ

Ownership

0.052%

of shares outstanding

% of Portfolio

1.12%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

24 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Energy · as of Mar 31, 2026

CASTLEARK MANAGEMENT LLC holds $87,740,831 across 11 Oil & Gas E&P names. FANG ranks #1 (32.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	FANG	Diamondback Energy, Inc. This page	145,020	$28,683,505
2	RRC	Range Resources Corp	410,520	$18,547,293
3	PR	Permian Resources Corp	630,980	$13,452,493
4	EQT	EQT Corp	193,845	$12,336,295
5	EXE	EXPAND ENERGY Corp	61,230	$6,721,829
6	OXY	Occidental Petroleum Corp /De/	52,585	$3,418,025
7	MGY	Magnolia Oil & Gas Corp	74,790	$2,361,120
8	CRK	Comstock Resources Inc	33,370	$703,439

24 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$28,683,505	145,020	+1123.3%	Shares	Sole	2026-05-15
2025-09-30	$1,696,450	11,855	0.0%	Shares	Sole	2025-11-17
2025-06-30	$1,628,877	11,855	-2.0%	Shares	Sole	2025-08-18
2025-03-31	$1,933,748	12,095	-33.3%	Shares	Sole	2025-05-15
2024-12-31	$2,971,057	18,135	0.0%	Shares	Sole	2025-02-18
2024-09-30	$3,126,474	18,135	0.0%	Shares	Sole	2024-11-15
2024-06-30	$3,630,445	18,135	0.0%	Shares	Sole	2024-08-14
2024-03-31	$3,593,812	18,135	-9.2%	Shares	Sole	2024-05-16
2023-12-31	$3,096,172	19,965	0.0%	Shares	Sole	2024-02-15
2023-09-30	$3,092,179	19,965	+35.0%	Shares	Sole	2023-11-15
2023-06-30	$1,942,157	14,785	+38.8%	Shares	Sole	2023-08-16
2023-03-31	$1,440,236	10,655	+88.1%	Shares	Sole	2023-05-16
2022-12-31	$774,858	5,665	0.0%	Shares	Sole	2023-02-10
2022-09-30	$682,405	5,665	-60.0%	Shares	Sole	2022-11-15
2022-06-30	$1,713,666	14,145	-25.0%	Shares	Sole	2022-08-16
2022-03-31	$2,584,643	18,855	0.0%	Shares	Sole	2022-05-16
2021-12-31	$2,033,511	18,855	-8.0%	Shares	Sole	2022-02-16
2021-09-30	$1,939,314	20,485	-52.0%	Shares	Sole	2021-11-12
2021-06-30	$4,010,980	42,720	-17.9%	Shares	Sole	2021-08-17
2021-03-31	$3,822,214	52,010	-38.1%	Shares	Sole	2021-05-14
2020-12-31	$4,063,809	83,963	-0.3%	Shares	Sole	2021-02-17
2020-09-30	$2,536,495	84,213	+39.0%	Shares	Sole	2020-11-16
2020-06-30	$2,533,999	60,593	+2227.8%	Shares	Sole	2020-08-14
2020-03-31	$68,198	2,603	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.