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ACM RESEARCH, INC. (ACMR) Ownership Summary
Institutional Holders
Total Number of Holders 248
% of Shares Outstanding 58.66%
Total Shares Held 33,700,656
Total Value of Holdings $551,679,738.72
Net Activity 827,466
 
Top 5 Holders Shares Held Shares Changed
BLACKROCK INC. 4,070,765 109,303
VANGUARD GROUP INC 3,904,389 (79,277)
GEODE CAPITAL MANAGEMENT, LLC 1,154,121 76,049
STATE STREET CORP 1,151,220 86,006
MORGAN STANLEY 1,139,707 178,060

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Insider Trades
 Last 3 mos.Last 12 mos.
Number of Insider Trades229
Number of Buys00
Number of Sells229
Net Activity (34,097) (914,459)
 
Top 5 TradesShares Traded Date
DUN HAIPING19,0978/29/2024
DUN HAIPING15,0008/22/2024
DUN HAIPING9038/14/2024
DUN HAIPING35,0008/14/2024
DUN HAIPING400,0006/27/2024

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5% Ownership (SC 13D & SC 13G Filings)
View Form   Filer  Received  Period 
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View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   YIHENG CAPITAL MANAGEMENT, L.P.  02/14/24   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   VANGUARD GROUP INC  02/13/24   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G   BLACKROCK INC.  01/26/24   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13D/A   SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITA...  07/18/23   File this document to a folder.
View Filing in HTMLView Filing in RTFView Filing in PDFView Filing in ExcelView Filing in Original Format  SC 13G/A   SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITA...  07/18/23   File this document to a folder.