GSA CAPITAL PARTNERS LLP

Position in ACMR — ACM Research, Inc.

CIK 1362033 LONDON, X0

Position in ACMR

as of Mar 31, 2026 · filed May 8, 2026 Compact

Position Value

$1,052,966

+$605,985 QoQ

Shares Held

26,759

+134.3% QoQ

Ownership

0.040%

of shares outstanding

% of Portfolio

0.07%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2021

13 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Mar 31, 2026

GSA CAPITAL PARTNERS LLP holds $15,028,112 across 18 Semiconductor Equipment & Materials names. ACMR ranks #7 (7.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AMKR	Amkor Technology, Inc.	30,804	$1,387,104
2	AXTI	Axt Inc	24,123	$1,374,528
3	FORM	Formfactor Inc	13,993	$1,357,181
4	UCTT	Ultra Clean Holdings, Inc.	20,923	$1,300,992
5	PLAB	Photronics Inc	29,659	$1,198,520
6	AMAT	Applied Materials Inc /De	3,084	$1,054,080
7	ACMR	ACM Research, Inc. This page	26,759	$1,052,966
8	AMBA	Ambarella Inc	20,069	$1,033,152

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$1,052,966	26,759	+134.3%	Shares	Sole	2026-05-08
2025-09-30	$446,981	11,423	+3.5%	Shares	Sole	2025-11-07
2025-03-31	$257,486	11,032	-83.4%	Shares	Sole	2025-05-08
2024-12-31	$1,005,735	66,605	-7.2%	Shares	Sole	2025-02-07
2024-09-30	$1,457,641	71,805	+20.4%	Shares	Sole	2024-11-05
2024-06-30	$1,374,837	59,620	+178.4%	Shares	Sole	2024-08-15
2024-03-31	$624,062	21,416	-61.2%	Shares	Sole	2024-05-03
2023-09-30	$999,468	55,204	-43.1%	Shares	Sole	2023-11-15
2023-06-30	$1,269,257	97,038	-7.1%	Shares	Sole	2023-08-14
2023-03-31	$1,222,673	104,502	+11.0%	Shares	Sole	2023-05-12
2022-12-31	$725,611	94,113	+642.3%	Shares	Sole	2023-02-13
2022-03-31	$262,307	12,678	+17.2%	Shares	Sole	2022-05-11
2021-12-31	$922,620	10,820	—	Shares	Sole	2022-02-14
No filing history on record for this holder in this stock.