Institutional shares held 39.2 Million
1.87M calls
2.26M puts
Total value of holdings $978M
$46.6M calls
$56.2M puts
Market Cap $1.35B
54,181,200 Shares Out.
Institutional ownership 72.37%
# of Institutions 279


Latest Institutional Activity in ACMR

Top Purchases

Q2 2025
Southeastern Asset Management Inc Shares Held: 1.19M ($29.6M)
Q2 2025
Mitsubishi Ufj Trust & Banking Corp Shares Held: 2.3M ($57.4M)
Q2 2025
Nuveen, LLC Shares Held: 714K ($17.8M)
Q2 2025
Millennium Management LLC Shares Held: 518K ($12.9M)
Q2 2025
Lsv Asset Management Shares Held: 445K ($11.1M)

Top Sells

Q2 2025
Point72 Asset Management, L.P. Shares Held: 252K ($6.29M)
Q2 2025
Invesco Ltd. Shares Held: 826K ($20.6M)
Q2 2025
Citadel Advisors LLC Shares Held: 204K ($5.09M)
Q2 2025
Jane Street Group, LLC Shares Held: 260K ($6.48M)
Q2 2025
Trexquant Investment LP Shares Held: 62.7K ($1.56M)

About ACMR

ACM Research, Inc., together with its subsidiaries, develops, manufactures, and sells single-wafer wet cleaning equipment for enhancing the manufacturing process and yield for integrated chips worldwide. It offers space alternated phase shift technology for flat and patterned wafer surfaces, which employs alternating phases of megasonic waves to deliver megasonic energy in a uniform manner on a microscopic level; timely energized bubble oscillation technology for patterned wafer surfaces at advanced process nodes, which provides cleaning for 2D and 3D patterned wafers; Tahoe technology for delivering cleaning performance using less sulfuric acid and hydrogen peroxide; and electro-chemical plating technology for advanced metal plating. The company markets and sells its products under the Ultra C brand name through direct sales force and third-party representatives. ACM Research, Inc. was incorporated in 1998 and is headquartered in Fremont, California.


Insider Transactions at ACMR

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
799K Shares
From 6 Insiders
Exercise of conversion of derivative security 799K shares
Sell / Disposition
3.03M Shares
From 11 Insiders
Open market or private sale 3.02M shares
Payment of exercise price or tax liability 12.7K shares

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