TWO SIGMA INVESTMENTS, LP

Position in ASYS — Amtech Systems Inc

CIK 1179392 NEW YORK, NY

Position in ASYS

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

Position Value

$5,870,790

+$2,753,912 QoQ

Shares Held

254,367

-4.7% QoQ

Ownership

1.45%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#13

of 111 holders

Holding Since

Mar 2020

15 quarters on record

Voting authority Sole 98% Shared 0% None 2%

Technology · as of Jun 30, 2026

TWO SIGMA INVESTMENTS, LP holds $2,573,468,005 across 27 Semiconductor Equipment & Materials names. ASYS ranks #21 (0.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ASML	Asml Holding NV	461,505	$918,136,461
2	Q	Qnity Electronics, Inc.	1,731,805	$282,821,074
3	ONTO	Onto Innovation Inc.	632,976	$239,549,767
4	TER	Teradyne, Inc	469,082	$226,960,634
5	AEHR	Aehr Test Systems	1,164,614	$111,872,820
6	ENTG	Entegris Inc	551,105	$99,121,745
7	LRCX	Lam Research Corp	225,152	$97,565,116
8	AMKR	Amkor Technology, Inc.	1,069,101	$92,188,579

15 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$5,870,790	254,367	-4.7%	Shares	Sole	2026-08-14
2026-03-31	$3,116,878	266,856	+139.5%	Shares	Sole	2026-05-15
2025-12-31	$1,398,534	111,437	+1003.3%	Shares	Sole	2026-02-17
2023-03-31	$96,354	10,100	-9.8%	Shares	Sole	2023-05-15
2022-12-31	$85,120	11,200	-5.1%	Shares	Sole	2023-02-14
2022-09-30	$100,300	11,800	-22.4%	Shares	Sole	2022-11-14
2022-06-30	$110,960	15,200	-48.0%	Shares	Sole	2022-08-15
2022-03-31	$294,154	29,240	-58.3%	Shares	Sole	2022-05-16
2021-12-31	$692,291	70,070	+70.8%	Shares	Sole	2022-02-14
2021-09-30	$468,938	41,027	-71.3%	Shares	Sole	2021-11-15
2021-06-30	$1,380,081	143,162	-2.8%	Shares	Sole	2021-08-16
2021-03-31	$1,740,128	147,219	+1250.6%	Shares	Sole	2021-05-17
2020-09-30	$53,301	10,900	0.0%	Shares	Sole	2020-11-16
2020-06-30	$53,083	10,900	-7.6%	Shares	Sole	2020-08-14
2020-03-31	$51,330	11,800	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.