Security key
00108J109
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 32,892,829
- Total 13F value
- $642,774,193
- Share change
- +1,846,960
- Put/Call ratio
- 35%
- SEC-reported price per share
- $19.54
- Number of holders
- 154
- Value change
- +$39,830,721
- Number of buys
- 71
- Number of sells
- 84
- 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 2023
Institutions
154
Top holders
10
ACMR full security history
Ownership snapshot
Full 13F holder table
ACM Research, Inc. SEC filings
ACM Research, Inc. company facts
Broader feeds
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
VANGUARD GROUP INC
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
30 Sep 2023
13F
Lead comparable stake: 6.4%
Showing 1-6 of 15 holder rows.
Quick read
VANGUARD GROUP INC leads the comparable SEC ownership view at 6.4%.
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 VANGUARD GROUP INC's linked filing trail.
Comparable ownership
Top 5
VANGUARD GROUP INC
6.4%
BlackRock Finance, Inc.
5.4%
BANK OF AMERICA CORP /DE/
3.2%
CITIGROUP INC
2.8%
Pertento Partners LLP
1.9%
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 |
|---|---|---|---|---|---|
| VANGUARD GROUP INC |
13F
Company
|
6.4%
|
$73,919,728
4,082,835 shares
|
— | 30 Sep 2023 |
| BlackRock Finance, Inc. |
13F
Company
|
5.4%
|
$62,581,869
3,456,607 shares
|
— | 30 Sep 2023 |
| BANK OF AMERICA CORP /DE/ |
13F
Company
|
3.2%
|
$37,661,097
2,080,149 shares
|
— | 30 Sep 2023 |
| CITIGROUP INC |
13F
Company
|
2.8%
|
$31,966,605
1,765,623 shares
|
— | 30 Sep 2023 |
| Pertento Partners LLP |
13F
Company
|
1.9%
|
$21,643,876
1,195,464 shares
|
— | 30 Sep 2023 |
| JPMORGAN CHASE & CO |
13F
Company
|
1.7%
|
$19,430,304
1,073,201 shares
|
— | 30 Sep 2023 |
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 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
154
Shares
32,892,829
Rows available
154
| 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 2023 vs Q3 2023 Across Filers
Q3 2023 holders
153
Q4 2023 holders
154
Holder diff
1
| Investor | Q3 2023 Shares | Q4 2023 Shares | Share Diff | Share Chg % | Q3 2023 value | Q4 2023 value | Value change | Value Chg % |
|---|