ACM Research, Inc. (ACMR) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

68,086,628Shares Outstanding

1,352,989Shares held by institutions

$88,187,823Value of institutional holdings

65.40%Institutional ownership %

8.56%Shares Changed QoQ

260No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

A total of 260 institutions have reported a stake in ACM Research, Inc. (NASDAQ:ACMR) as of December 2025, according to recent 13F filings with the SEC.

ACM Research saw its institutional ownership percentage rose to 65.4% in December 2025 from 62.9% in September 2025.
In percentage terms, this reflects as a holdings change of 8.56% quarter on quarter, and an increase of 46.07% year over year.
The latest 13F cycle for ACM Research reveals that of 260 total investors, 150 funds grew their exposure, whereas 83 reduced theirs and 27 made no changes.
Collectively, institutional investors increased their stake in ACM Research to 44.53Mn shares as of December 2025, a change that is up by 3.51Mn shares quarter on quarter and up 8.85Mn shares year over year.
BlackRock, Inc.'s holding of 7.89Mn shares as of December 31, 2025 makes it the primary institutional investor in ACM Research, owning 11.59% of the stock.
Among the most significant buyers of ACM Research during December 2025 were JANUS HENDERSON GROUP PLC (1.01Mn), Tekne Capital Management, LLC (715.00K), FMR LLC (555.50K), MORGAN STANLEY (515.34K), Penn Capital Management Company, LLC (435.84K).
Leading sellers of ACM Research stock in December 2025 included FEDERATED HERMES, INC. (1.04Mn), Mitsubishi UFJ Trust & Banking Corp (530.84K), Broad Bay Capital Management, LP (360.20K), GOLDMAN SACHS GROUP INC (311.65K), CITADEL ADVISORS LLC (251.95K).
The top 10 institutional holders of ACM Research for the quarter ending December 2025 included BlackRock, Inc. (7.89Mn), VANGUARD GROUP INC (4.97Mn), LSV ASSET MANAGEMENT (2.38Mn), STATE STREET CORP (1.96Mn), Triata Capital Ltd (1.93Mn), SOUTHEASTERN ASSET MANAGEMENT INC/TN/ (1.68Mn), MORGAN STANLEY (1.39Mn), GEODE CAPITAL MANAGEMENT, LLC (1.34Mn), JANUS HENDERSON GROUP PLC (1.08Mn), Mitsubishi UFJ Trust & Banking Corp (829.13K).

260 Institutional Holders

1,352,989 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	7,888,480	300,941	3.97%	$311,200,536.00
VANGUARD GROUP INC	31 Dec, 2025	4,972,103	125,690	2.59%	$196,149,463.00
LSV ASSET MANAGEMENT	31 Dec, 2025	2,380,521	-123,784	-4.94%	$93,912.00
STATE STREET CORP	31 Dec, 2025	1,958,041	-32,213	-1.62%	$77,244,717.00
Triata Capital Ltd	31 Dec, 2025	1,929,919	-73,306	-3.66%	$76,135,305.00
SOUTHEASTERN ASSET MANAGEMENT INC/TN/	31 Dec, 2025	1,680,181	194,494	13.09%	$66,283,140.00
MORGAN STANLEY	31 Dec, 2025	1,392,306	515,340	58.76%	$54,926,494.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,342,899	19,397	1.47%	$52,986,097.00
JANUS HENDERSON GROUP PLC	31 Dec, 2025	1,082,982	1,011,088	1,406.36%	$42,739,885.00
Mitsubishi UFJ Trust & Banking Corp	31 Dec, 2025	829,127	-530,842	-39.03%	$32,721,497.00
FMR LLC	31 Dec, 2025	803,666	555,495	223.84%	$31,704,614.00
JANE STREET GROUP, LLC	31 Dec, 2025	794,200	-162,917	-17.02%	$31,331,190.00
Tekne Capital Management, LLC	31 Dec, 2025	715,000	715,000	0.00%	$28,206,750.00
Broad Bay Capital Management, LP	31 Dec, 2025	652,214	-360,200	-35.58%	$25,729,842.00
UBS Group AG	31 Dec, 2025	614,715	26,175	4.45%	$24,250,507.00
NORTHERN TRUST CORP	31 Dec, 2025	544,059	-43,049	-7.33%	$21,463,127.00
Steamboat Capital Partners, LLC	31 Dec, 2025	504,161	-20,839	-3.97%	$19,889,151.00
Cederberg Capital Ltd	31 Dec, 2025	496,500	0	0.00%	$19,428.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	478,333	41,175	9.42%	$18,870,237.00
Penn Capital Management Company, LLC	31 Dec, 2025	435,843	435,843	0.00%	$17,212,421.00

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