CASTLEARK MANAGEMENT LLC

Position in NRG — Nrg Energy, Inc.

CIK 1106832 CHICAGO, IL

Position in NRG

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

Position Value

$1,228,364

+$1,036,921 QoQ

Shares Held

8,410

+542.0% QoQ

Ownership

0.004%

of shares outstanding

% of Portfolio

0.04%

of 13F equity value

Holder Rank

#407

of 1,015 holders

Holding Since

Jun 2025

5 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Utilities · as of Jun 30, 2026

CASTLEARK MANAGEMENT LLC holds $3,390,474 across 4 Utilities - Independent Power Producers names. NRG ranks #2 (36.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CEG	Constellation Energy Corp	5,120	$1,271,654
2	NRG	Nrg Energy, Inc. This page	8,410	$1,228,364
3	VST	Vistra Corp.	4,160	$659,900
4	TLN	Talen Energy Corp	600	$230,556

5 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$1,228,364	8,410	+542.0%	Shares	Sole	2026-08-14
2026-03-31	$191,443	1,310	-36.4%	Shares	Sole	2026-05-15
2025-12-31	$328,034	2,060	+186.1%	Shares	Sole	2026-02-13
2025-09-30	$116,604	720	0.0%	Shares	Sole	2025-11-17
2025-06-30	$115,617	720	—	Shares	Sole	2025-08-18
No filing history on record for this holder in this stock.