Security key
00086T103
- Security type / class
- Equity / COM
- Total 13F shares
- 1,000
- Total 13F value
- $19,790
- Share change
- +1,000
- SEC-reported price per share
- $19.79
- Number of holders
- 1
- Value change
- +$19,790
- Number of buys
- 1
Report period
Q4 2023
Institutions
1
Top holders
1
ACMR full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2025
ACM Research, Inc. SEC filings
ACM Research, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 00086T103
Recent filing periods:
Ownership snapshot
Top reported holders of ACMR - ACM RESH INC CLASS A - COM (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
0/15
Latest evidence
30 Sep 2023
13F
3/4/5
Highest disclosed value: $73,919,728
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
VANGUARD GROUP INC has the largest disclosed position value at $73.92M.
0 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.
Disclosed position value
Top 5
VANGUARD GROUP INC
$73.92M
BlackRock Finance, Inc.
$62.58M
BANK OF AMERICA CORP /DE/
$37.66M
CITIGROUP INC
$31.97M
Yinan Xiang
$25.22M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
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
|
—
denominator unverified
|
$73,919,728
4,082,835 shares
|
— | 30 Sep 2023 |
| BlackRock Finance, Inc. |
13F
Company
|
—
denominator unverified
|
$62,581,869
3,456,607 shares
|
— | 30 Sep 2023 |
| BANK OF AMERICA CORP /DE/ |
13F
Company
|
—
denominator unverified
|
$37,661,097
2,080,149 shares
|
— | 30 Sep 2023 |
| CITIGROUP INC |
13F
Company
|
—
denominator unverified
|
$31,966,605
1,765,623 shares
|
— | 30 Sep 2023 |
| Yinan Xiang |
3/4/5
Director
|
—
denominator unverified
|
$25,215,740
1,146,170 shares
|
— | 23 Aug 2021 |
| Pertento Partners LLP |
13F
Company
|
—
denominator unverified
|
$21,643,876
1,195,464 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
1
Shares
1,000
Rows available
1
| 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 Q2 2026 Across Filers
Q2 2026 holders
1
Q4 2023 holders
1
Holder diff
0
| Investor | Q2 2026 Shares | Q4 2023 Shares | Share Diff | Share Chg % | Q2 2026 value | Q4 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend