Institutional shares held 37.2 Million
2.43M calls
1.91M puts
Total value of holdings $1.1B
$72.1M calls
$56.4M puts
Market Cap $1.6B
54,181,200 Shares Out.
Institutional ownership 68.66%
# of Institutions 277


Latest Institutional Activity in ACMR

Top Purchases

Q2 2025
Ruffer LLP Shares Held: 265K ($7.84M)
Q2 2025
Congress Asset Management CO Shares Held: 197K ($5.84M)
Q2 2025
Imc Chicago, LLC Shares Held: 50.9K ($1.51M)
Q2 2025
Wealth Enhancement Advisory Services, LLC Shares Held: 16.9K ($502K)
Q2 2025
Janney Montgomery Scott LLC Shares Held: 38.9K ($1.15M)

Top Sells

Q2 2025
Matthews International Capital Management LLC Shares Held: 221K ($6.55M)
Q2 2025
North Crest Asset Manangement, LLC Shares Held: 26.3K ($778K)
Q2 2025
Klp Kapitalforvaltning As Shares Held: 10.7K ($317K)
Q2 2025
Mirae Asset Global Investments Co., Ltd. Shares Held: 5K ($148K)
Q2 2025
Gamma Investing LLC Shares Held: 657 ($19.4K)

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
834K Shares
From 6 Insiders
Exercise of conversion of derivative security 834K shares
Sell / Disposition
3.03M Shares
From 11 Insiders
Open market or private sale 3.02M shares
Payment of exercise price or tax liability 13.6K shares

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