GROUP ONE TRADING LLC

Position in TAC — Transalta Corp

CIK 932540 CHICAGO, IL

Position in TAC

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

Position Value

$67,075

-$67,226 QoQ

Shares Held

4,850

-52.7% QoQ

Ownership

0.002%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#143

of 177 holders

Holding Since

Sep 2022

9 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Utilities · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $16,813,811 across 4 Utilities - Independent Power Producers names. TAC ranks #4 (0.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	NRG	Nrg Energy, Inc.	70,008	$10,225,368
2	VST	Vistra Corp.	26,231	$4,161,023
3	DGXX	Digi Power X Inc.	433,091	$2,360,345
4	TAC	Transalta Corp This page	4,850	$67,075

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$67,075	4,850	-52.7%	Shares	Sole	2026-08-14
2026-03-31	$134,301	10,252	-27.9%	Shares	Sole	2026-05-13
2025-12-31	$179,702	14,217	-31.5%	Shares	Sole	2026-02-12
2025-06-30	$224,021	20,762	-60.5%	Shares	Sole	2025-08-14
2025-03-31	$491,136	52,528	-68.5%	Shares	Sole	2025-05-14
2024-12-31	$2,356,668	166,549	+3609.3%	Shares	Sole	2025-05-14
2024-09-30	$46,516	4,490	+541.4%	Shares	Sole	2024-11-14
2022-12-31	$6,279	700	0.0%	Shares	Sole	2023-02-09
2022-09-30	$6,181	700	—	Shares	Sole	2022-11-09
No filing history on record for this holder in this stock.