ACM Research
ACMR
72.77
-2.58
-3.42%
ACM Research
US · ACMR
#1957 by market cap
Listed 2017
72.77
-2.58
-3.42%
Live - 5344 symbols - heartbeat 89s ago
· 2026-10-08 08:38
Pre-market
71.05
-2.36%
After-hours
73.03
+0.36%
Overnight
71.70
-1.47%
- Market cap
- 5.07B
- P/E (TTM)i
- 34.33
- P/Bi
- 2.72
- EPSi
- 1.37
- Div yieldi
- 0.00%
- 52W posi
- 45%
Reader sentiment
Are you bullish or bearish on ACMR?
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
Mixed / stable
- The number of reporting institutions increased by 2 in the most recent period (2026/Q3).
- Total institutional ownership (as a % of shares) was little changed.
Institutional ownership
- Held by institutions
- 76.88% +0.04pp
- Institutions
- 449 +2
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
DivergingInstitutions added shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two are pointing in different directions.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Mutual Fund61.22%
Individual/Insider11.11%
Hedge Fund6.02%
VC/PE Fund4.82%
Public Company2.18%
Government Pension Fund1.18%
Private Company0.96%
Family Office/Trust0.22%
Insurance Company0.20%
Other12.09%
Top holders as of 2026-06-30
BlackRock
12.43% · 8.66M sh
Hui Wang
8.49% · 5.92M sh
Shanghai Pudong Science and Technology Investment Co., Ltd.
4.82% · 3.36M sh
Vanguard Portfolio Management, LLC
4.81% · 3.35M sh
Capital Research
4.34% · 3.02M sh
Vanguard Capital Management, LLC
4.12% · 2.87M sh
State Street Global Advisors
3.14% · 2.19M sh
Geode Capital Management, LLC
2.14% · 1.49M sh
Haiping Dun
1.66% · 1.16M sh
Invesco Capital Management LLC
1.57% · 1.09M sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
50 filings tracked · 14 buys · 36 sells
| Name | Role | Stake |
|---|---|---|
| Hui Wang | Chairperson & CEO | 8.49% |
| Haiping Dun | Lead Independent Director | 1.66% |
| Jian Wang | Chief Executive Officer and President of ACM Research (Shanghai), Inc. | 0.58% |
| Dong Liu | Independent Director | 0.16% |
| Sotheara Cheav | Senior Vice President of Manufacturing | 0.14% |
| Yi Lu Feng | Former Interim CFO, Chief Accounting Officer & Treasurer | 0.07% |
| Mark McKechnie | CFO, Executive VP, Secretary & Treasurer | 0.00% |
| Chenming C. Hu | Independent Director | -- |
| Charles Pappis | Director | -- |
| Shanghai Technology Venture Capital Investment Co., Ltd. | -- | -- |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-09-08 | Hui Wang | Chairperson & CEO | Derivative Exercise and Sale | -140,000 | $1.00–78.57 |
| 2026-08-19 | Mark McKechnie | CFO, Executive VP, Secretary & Treasurer | Derivative Exercise and Sale | -55,199 | $13.89–77.89 |
| 2026-08-17 | Haiping Dun | Lead Independent Director | Derivative Exercise and Sale | -5,000 | $5.60–82.17 |
| 2026-08-11 | Charles Pappis | Director | Other Derivative Acquisition | +728 | $96.13 |
| 2026-08-11 | Charles Pappis | Director | Other Derivative Acquisition | +6,400 | $81.26 |
| 2026-08-11 | Haiping Dun | Lead Independent Director | Other Derivative Acquisition | +728 | $96.13 |
| 2026-08-11 | Haiping Dun | Lead Independent Director | Other Derivative Acquisition | +6,400 | $81.26 |
| 2026-08-11 | Dong Liu | Independent Director | Other Derivative Acquisition | +728 | $96.13 |
| 2026-08-11 | Dong Liu | Independent Director | Other Derivative Acquisition | +6,400 | $81.26 |
| 2026-06-04 | Sotheara Cheav | Senior Vice President of Manufacturing | Derivative Exercise and Sale | -18,750 | $13.89–85.77 |
| 2026-06-04 | Sotheara Cheav | Senior Vice President of Manufacturing | Intent to Sell (Form 144) | -5,399 | $83.18 |
| 2026-06-03 | Hui Wang | Chairperson & CEO | Derivative Exercise and Sale | -100,002 | $1.00–93.04 |
| 2026-06-03 | Sotheara Cheav | Senior Vice President of Manufacturing | Intent to Sell (Form 144) | -13,351 | $85.15 |
| 2026-05-18 | Haiping Dun | Lead Independent Director | Derivative Exercise and Sale | -5,000 | $5.60–67.54 |
| 2026-05-12 | Hui Wang | Chairperson & CEO | Other Derivative Acquisition | +6,208 | -- |
| 2026-04-16 | Charles Pappis | Director | Derivative Exercise and Sale | -5,000 | $29.18–52.00 |
| 2026-03-11 | Mark McKechnie | CFO, Executive VP, Secretary & Treasurer | Derivative Exercise and Sale | -98,551 | $13.89–46.57 |
| 2026-03-11 | Hui Wang | Chairperson & CEO | Derivative Exercise and Sale | -110,000 | $1.00–48.34 |
| 2026-03-10 | Dong Liu | Independent Director | Derivative Exercise and Sale | -60,000 | $1.00–48.25 |
| 2026-03-08 | Haiping Dun | Lead Independent Director | Derivative Exercise and Sale | -5,000 | $5.60–43.94 |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-08 08:38:32 · For reference only, not investment advice and not tailored to your situation.