GROUP ONE TRADING LLC

Position in GWH — ESS Tech, Inc.

CIK 932540 CHICAGO, IL

Position in GWH

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

Position Value

$388

-$90 QoQ

Shares Held

409

0.0% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#31

of 47 holders

Holding Since

Dec 2021

15 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Industrials · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $55,808,267 across 19 Electrical Equipment & Parts names. GWH ranks #18 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	FCEL	Fuelcell Energy Inc	696,353	$25,075,671
2	TE	T1 Energy Inc.	1,400,308	$13,274,919
3	EOSE	Eos Energy Enterprises, Inc.	1,061,192	$6,239,808
4	POWL	Powell Industries Inc	14,763	$4,227,532
5	AMPX	Amprius Technologies, Inc.	213,312	$2,956,504
6	NVT	nVent Electric plc	7,690	$1,304,300
7	ENVX	Enovix Corp	180,915	$1,098,154
8	AEIS	Advanced Energy Industries Inc	2,074	$773,332

15 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$388	409	0.0%	Shares	Sole	2026-08-14
2026-03-31	$478	409	0.0%	Shares	Sole	2026-05-13
2025-12-31	$768	409	0.0%	Shares	Sole	2026-02-12
2025-09-30	$621	409	0.0%	Shares	Sole	2025-11-12
2025-06-30	$543	409	+1.5%	Shares	Sole	2025-08-14
2025-03-31	$1,313	403	-2.9%	Shares	Sole	2025-05-14
2024-12-31	$2,440	415	-98.9%	Shares	Sole	2025-05-14
2024-06-30	$30,383	37,144	+23.2%	Shares	Sole	2024-08-14
2024-03-31	$21,794	30,144	+41.4%	Shares	Sole	2024-05-10
2023-12-31	$24,301	21,317	+308.8%	Shares	Sole	2024-02-14
2023-09-30	$9,804	5,215	-78.3%	Shares	Sole	2023-11-09
2023-06-30	$35,366	24,059	+112.7%	Shares	Sole	2023-08-09
2022-12-31	$27,480	11,309	-66.3%	Shares	Sole	2023-02-09
2022-09-30	$137,354	33,583	+61.9%	Shares	Sole	2022-11-09
2021-12-31	$237,311	20,744	—	Shares	Sole	2022-02-11
No filing history on record for this holder in this stock.