Security key
00108J109
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 5,443,661
- Total 13F value
- $442,291,701
- Share change
- +104,775
- Put/Call ratio
- 92%
- SEC-reported price per share
- $81.25
- Number of holders
- 91
- Value change
- +$12,069,420
- Number of buys
- 50
- Number of sells
- 44
- Shares outstanding
- 64,126,478
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2020
Institutions
91
Top holders
10
ACMR full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
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
INDUS CAPITAL PARTNERS, LLC
Disclosed value leader
INDUS CAPITAL PARTNERS, LLC
Comparable rows
15/15
Latest evidence
30 Sep 2020
13F
Lead comparable stake: 1.8%
Showing 1-6 of 15 holder rows.
Quick read
INDUS CAPITAL PARTNERS, LLC leads the comparable SEC ownership view at 1.8%.
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.
Open SEC evidence
Opens INDUS CAPITAL PARTNERS, LLC's linked filing trail.
Comparable ownership
Top 5
INDUS CAPITAL PARTNERS, LLC
1.8%
BlackRock Finance, Inc.
0.88%
VANGUARD GROUP INC
0.8%
DISCOVERY CAPITAL MANAGEMENT, LLC...
0.37%
WELLINGTON MANAGEMENT GROUP LLP
0.34%
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 |
|---|---|---|---|---|---|
| INDUS CAPITAL PARTNERS, LLC |
13F
Company
|
1.8%
|
$78,167,000
1,131,216 shares
|
— | 30 Sep 2020 |
| BlackRock Finance, Inc. |
13F
Company
|
0.88%
|
$38,945,000
563,600 shares
|
— | 30 Sep 2020 |
| VANGUARD GROUP INC |
13F
Company
|
0.8%
|
$35,268,000
510,400 shares
|
— | 30 Sep 2020 |
| DISCOVERY CAPITAL MANAGEMENT, LLC / CT |
13F
Company
|
0.37%
|
$16,577,000
239,902 shares
|
— | 30 Sep 2020 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
Company
|
0.34%
|
$14,998,000
217,058 shares
|
— | 30 Sep 2020 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
Company
|
0.24%
|
$10,650,000
154,126 shares
|
— | 30 Sep 2020 |
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 Q4 2020
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
91
Shares
5,443,661
Rows available
91
| 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 Q4 2020 vs Q3 2020 Across Filers
Q3 2020 holders
87
Q4 2020 holders
91
Holder diff
4
| Investor | Q3 2020 Shares | Q4 2020 Shares | Share Diff | Share Chg % | Q3 2020 value | Q4 2020 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend