CHARLES SCHWAB INVESTMENT MANAGEMENT INC

Position in ACMR — ACM Research, Inc.

CIK 884546 SAN FRANCISCO, CA

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Position in ACMR

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

Position Value

$66,840,576

+$47,904,609 QoQ

Shares Held

526,760

+9.5% QoQ

Ownership

0.756%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

#23

of 376 holders

Holding Since

Sep 2020

24 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in ACMR Over Time

Shares Held

Position Value (USD)

Position in Semiconductor Equipment & Materials

Technology · as of Jun 30, 2026

CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $12,324,123,598 across 27 Semiconductor Equipment & Materials names. ACMR ranks #14 (0.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AMAT	Applied Materials Inc /De	4,969,702	$3,593,094,546
2	LRCX	Lam Research Corp	7,698,872	$3,336,152,203
3	KLAC	Kla Corp	10,416,170	$3,142,662,650
4	TER	Teradyne, Inc	1,014,857	$491,028,410
5	Q	Qnity Electronics, Inc.	1,505,919	$245,931,631
6	ENTG	Entegris Inc	1,221,521	$219,702,766
7	ONTO	Onto Innovation Inc.	509,528	$192,830,871
8	ASML	Asml Holding NV	88,615	$176,294,215

All Filings in ACMR

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24 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$66,840,576	526,760	+9.5%	Shares	Sole	2026-08-14
2026-03-31	$18,935,967	481,219	+0.6%	Shares	Sole	2026-05-15
2025-12-31	$18,870,236	478,333	+9.4%	Shares	Sole	2026-02-13
2025-09-30	$17,105,992	437,158	+6.5%	Shares	Sole	2025-11-10
2025-06-30	$10,634,125	410,584	+2.1%	Shares	Sole	2025-08-12
2025-03-31	$9,386,484	402,163	-1.6%	Shares	Sole	2025-09-15
2024-12-31	$6,171,113	408,683	+0.7%	Shares	Sole	2025-02-06
2024-09-30	$8,238,917	405,858	+3.5%	Shares	Sole	2024-11-12
2024-06-30	$9,039,035	391,979	+3.4%	Shares	Sole	2024-08-12
2024-03-31	$11,043,564	378,983	+0.6%	Shares	Sole	2024-05-09
2023-12-31	$7,359,330	376,629	+5.6%	Shares	Sole	2024-02-06
2023-09-30	$6,457,745	356,683	+9.3%	Shares	Sole	2023-11-08
2023-06-30	$4,267,467	326,259	+0.9%	Shares	Sole	2023-08-10
2023-03-31	$3,783,838	323,405	+0.8%	Shares	Sole	2023-05-12
2022-12-31	$2,473,961	320,877	+1.4%	Shares	Sole	2023-02-13
2022-09-30	$3,943,116	316,462	+10.7%	Shares	Sole	2022-11-14
2022-06-30	$4,810,182	285,810	+56.0%	Shares	Sole	2022-08-15
2022-03-31	$3,791,173	183,237	+206.3%	Shares	Sole	2022-05-13
2021-12-31	$5,100,419	59,815	+1.5%	Shares	Sole	2022-02-11
2021-09-30	$6,481,205	58,920	+20.1%	Shares	Sole	2021-11-16
2021-06-30	$5,014,294	49,054	+3.7%	Shares	Sole	2021-08-16
2021-03-31	$3,820,882	47,294	+4.9%	Shares	Sole	2021-05-17
2020-12-31	$3,663,476	45,089	+4.1%	Shares	Sole	2021-02-16
2020-09-30	$2,993,891	43,327	—	Shares	Sole	2020-11-13
No filing history on record for this holder in this stock.