ACM Research, Inc.
ACMR- Exchange
- Nasdaq
- Industry
- Special Industry Machinery, NEC
- SEC CIK
- 0001680062
In the last 90 days, ACM Research, Inc. insiders filed 0 open-market purchases and 3 sales; 377 institutions reported holding it in 13F filings for Q2 2026, worth $6.11B in total; 3 superinvestors hold it, including Southeastern Asset Management (Longleaf) and Soros Fund Management.
13F holders, Q1 2026
Institutional positions in ACM Research, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 301
- +29 vs. Q4 2025
- Shares held
- 44.4M
- +4.22M (+10.5%) vs. Q4 2025
- Total value
- $1.74B
- +$157.8M (+9.9%) vs. Q4 2025
- New holders
- 73
- 82 more added
- Sold out
- 44
- 105 more reduced
7 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ACMR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 377 | $6.11B |
| Q1 2026 | 301 | $1.74B |
| Q4 2025 | 279 | $1.79B |
| Q3 2025 | 260 | $1.63B |
| Q2 2025 | 243 | $969.2M |
| Q1 2025 | 244 | $838.6M |
| Q4 2024 | 183 | $539.4M |
| Q3 2024 | 185 | $656.9M |
| Q2 2024 | 201 | $774.0M |
| Q1 2024 | 200 | $956.1M |
| Q4 2023 | 156 | $642.8M |
| Q3 2023 | 154 | $562.8M |
| Q2 2023 | 122 | $382.7M |
| Q1 2023 | 130 | $343.6M |
| Q4 2022 | 123 | $235.2M |
| Q3 2022 | 117 | $434.9M |
| Q2 2022 | 98 | $607.2M |
| Q1 2022 | 96 | $606.7M |
| Q4 2021 | 100 | $747.5M |
| Q3 2021 | 96 | $979.6M |
| Q2 2021 | 94 | $753.5M |
| Q1 2021 | 94 | $586.5M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding ACM Research, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 7,984,847 | $314.2M | 0.01% | +96,367+1.2% | Added |
| Triata Capital Ltd | 0 | $0 | 0.00% | −1,929,919−100.0% | Sold out |
| Broad Bay Capital Management, LP | 0 | $0 | 0.00% | −652,214−100.0% | Sold out |
| Discovery Capital Management, LLC | 0 | $0 | 0.00% | −296,200−100.0% | Sold out |
| Yiheng Capital Management, L.P. | 0 | $0 | 0.00% | −174,447−100.0% | Sold out |
| MY.Alpha Management HK Advisors Ltd | 0 | $0 | 0.00% | −105,605−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −87,158−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −81,967−100.0% | Sold out |
| Inspire Advisors, LLC | 0 | $0 | 0.00% | −71,067−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −66,652−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −66,474−100.0% | Sold out |
| Yong Rong (HK) Asset Management Ltd | 0 | $0 | 0.00% | −60,000−100.0% | Sold out |
| Massar Capital Management, LP | 0 | $0 | 0.00% | −54,135−100.0% | Sold out |
| Weiss Asset Management LP | 0 | $0 | 0.00% | −49,170−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −34,144−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −30,839−100.0% | Sold out |
| FirstWave Capital Management LLC | 0 | $0 | 0.00% | −29,491−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −26,727−100.0% | Sold out |
| Belpointe Asset Management LLC | 0 | $0 | 0.00% | −22,396−100.0% | Sold out |
| Fideuram Asset Management (Ireland) dac | 0 | $0 | 0.00% | −30,975−100.0% | Sold out |
| Parallax Volatility Advisers, L.P. | 0 | $0 | 0.00% | −20,937−100.0% | Sold out |
| Nkcfo LLC | 0 | $0 | 0.00% | −18,000−100.0% | Sold out |
| Watershed Asset Management, L.L.C. | 0 | $0 | 0.00% | −10,845−100.0% | Sold out |
| Freestone Grove Partners LP | 0 | $0 | 0.00% | −10,153−100.0% | Sold out |
| Seldon Capital LP | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Amundi | 0 | $0 | 0.00% | −9,833−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −9,627−100.0% | Sold out |
| Landscape Capital Management, L.L.C. | 0 | $0 | 0.00% | −9,191−100.0% | Sold out |
| Standard Life Aberdeen plc | 0 | $0 | 0.00% | −8,386−100.0% | Sold out |
| VARCOV Co. | 0 | $0 | 0.00% | −7,758−100.0% | Sold out |
| OP Asset Management Ltd | 0 | $0 | 0.00% | −7,390−100.0% | Sold out |
| Cambridge Investment Research Advisors, Inc. | 0 | $0 | 0.00% | −7,176−100.0% | Sold out |
| TCG Advisory Services, LLC | 0 | $0 | 0.00% | −6,439−100.0% | Sold out |
| IFG Advisory, LLC | 0 | $0 | 0.00% | −6,250−100.0% | Sold out |
| PDT Partners, LLC | 0 | $0 | 0.00% | −6,241−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −5,307−100.0% | Sold out |
| Penserra Capital Management LLC | 0 | $0 | 0.00% | −2,748−100.0% | Sold out |
| Erste Asset Management GmbH | 0 | $0 | 0.00% | −2,250−100.0% | Sold out |
| Leonteq Securities AG | 0 | $0 | 0.00% | −700−100.0% | Sold out |
| Torren Management, LLC | 0 | $0 | 0.00% | −424−100.0% | Sold out |
| Estate Planners Group, LLC | 0 | $0 | 0.00% | −421−100.0% | Sold out |
| Commonwealth Retirement Investments LLC | 0 | $0 | 0.00% | −250−100.0% | Sold out |
| National Bank of Canada | 0 | $0 | 0.00% | −189−100.0% | Sold out |
| Strategic Advocates LLC | 0 | $0 | 0.00% | −35−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −25−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| UBS Oconnor LLC | – | – | – | – | Not filed |
| Norges Bank | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| MidWestOne Financial Group, Inc. | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |