SIMPLEX TRADING, LLC

Position in KLAC — Kla Corp

CIK 1488542 CHICAGO, IL

Position in KLAC

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$37,123,605

+$36,447,769 QoQ

Shares Held

123,044

+2580.7% QoQ

Ownership

0.009%

of shares outstanding

% of Portfolio

1.19%

of 13F equity value

Holder Rank

#394

of 2,471 holders

Holding Since

Dec 2020

15 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $115,572,420 across 22 Semiconductor Equipment & Materials names. KLAC ranks #1 (32.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	KLAC	Kla Corp This page	123,044	$37,123,605
2	ASML	Asml Holding NV	16,406	$32,638,750
3	AMAT	Applied Materials Inc /De	32,303	$23,355,069
4	ACMR	ACM Research, Inc.	44,316	$5,623,257
5	AMKR	Amkor Technology, Inc.	49,051	$4,229,667
6	ENTG	Entegris Inc	13,273	$2,387,281
7	TER	Teradyne, Inc	3,406	$1,647,959
8	VECO	Veeco Instruments Inc	20,077	$1,521,836

15 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$37,123,605	123,044	+26707.0%	Shares	Sole	2026-08-12
2026-03-31	$675,836	459	-80.4%	Shares	Sole	2026-05-14
2025-09-30	$2,522,845	2,339	-38.8%	Shares	Sole	2025-11-12
2024-12-31	$2,410,209	3,825	+1306.2%	Shares	Sole	2025-02-11
2024-03-31	$190,011	272	+318.5%	Shares	Sole	2024-04-25
2023-09-30	$29,812	65	-96.6%	Shares	Sole	2023-11-01
2023-06-30	$926,388	1,910	-88.4%	Shares	Sole	2023-08-04
2022-12-31	$6,198,373	16,440	+291.1%	Shares	Sole	2023-02-02
2022-09-30	$1,272,256	4,204	-29.8%	Shares	Sole	2022-11-04
2022-06-30	$1,910,651	5,988	-63.2%	Shares	Sole	2022-08-03
2021-12-31	$7,007,352	16,292	+54.4%	Shares	Sole	2022-02-23
2021-09-30	$3,529,415	10,551	-6.0%	Shares	Sole	2021-10-28
2021-06-30	$3,638,933	11,224	+721.1%	Shares	Sole	2021-08-12
2021-03-31	$451,656	1,367	+57.1%	Shares	Sole	2021-04-26
2020-12-31	$225,251	870	—	Shares	Sole	2021-02-02
No filing history on record for this holder in this stock.