Security key
00108J109
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 41,761,016
- Total 13F value
- $1,634,068,343
- Share change
- +4,249,815
- Put/Call ratio
- 67%
- SEC-reported price per share
- $39.13
- Number of holders
- 255
- Value change
- +$211,342,861
- Number of buys
- 139
- Number of sells
- 123
- Shares outstanding
- 59,904,855
Holder snapshot
7 signals
Show 1 more signal
Security identity
1 source field
Report period
Q3 2025
Institutions
255
Top holders
10
ACMR full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2025
Previous quarter: Q2 2025
ACM Research, Inc. SEC filings
ACM Research, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 00108J109
Recent filing periods:
Ownership snapshot
Top reported holders of ACMR - ACM Research, Inc. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
15/15
Latest evidence
30 Sep 2025
13D/G
13F
3/4/5
Lead comparable stake: 13%
13D/G row: BlackRock, Inc.
Showing 1-6 of 15 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 13%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Comparable ownership
Top 5
BlackRock, Inc.
13%
Yiheng Capital Management, L.P.
1.2%
Jian Wang
0.42%
VANGUARD GROUP INC
7.2%
Mitsubishi UFJ Trust & Banking Corp
3.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13D/G
13F
Company
|
13%
|
$200,125,707
7,420,308 shares
|
+$96,872,680 | 30 Sep 2025 |
| Yiheng Capital Management, L.P. |
13D/G
13F
Yiheng Capital Partners, L.P. · Company
|
1.2%
|
$14,145,634
666,304 shares
|
$0 | 30 Sep 2024 |
| Jian Wang |
3/4/5
Chief Executive Officer and President of ACM Research (Shanghai), Inc., a subsidiary of the Issuer
|
0.42%
|
$8,860,530
253,158 shares
|
-$2,910,000 | 18 Sep 2025 |
| VANGUARD GROUP INC |
13F
Company
|
7.2%
|
$111,277,847
4,296,442 shares
|
— | 30 Jun 2025 |
| Mitsubishi UFJ Trust & Banking Corp |
13F
Company
|
3.8%
|
$59,630,891
2,302,351 shares
|
— | 30 Jun 2025 |
| Triata Capital Ltd |
13F
Company
|
2.7%
|
$41,186,828
1,590,225 shares
|
— | 30 Jun 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
255
Shares
41,761,016
Rows available
255
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
239
Q3 2025 holders
255
Holder diff
16
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend