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 |
|---|---|---|---|---|---|
| Boothbay Fund Management, LLC | 38,194 | $1.50M | 0.04% | −80,900−67.9% | Reduced |
| Colony Group, LLC | 42,259 | $1.66M | 0.00% | −139−0.3% | Reduced |
| Engineers Gate Manager LP | 42,941 | $1.69M | 0.02% | +42,941 | New |
| Lazard Asset Management LLC | 43,034 | $1.69M | 0.00% | +43,034 | New |
| Great West Life Assurance Co | 43,426 | $1.71M | 0.00% | −1,610−3.6% | Reduced |
| EAM Investors, LLC | 43,874 | $1.73M | 0.20% | +43,874 | New |
| Acadian Asset Management LLC | 45,500 | $1.78M | 0.00% | +33,821+289.6% | Added |
| Balyasny Asset Management LLC | 47,076 | $1.85M | 0.00% | +47,076 | New |
| Barclays PLC | 49,194 | $1.94M | 0.00% | −57,710−54.0% | Reduced |
| Two Sigma Investments, LP | 52,416 | $2.06M | 0.00% | +52,416 | New |
| State Board of Administration of Florida Retirement System | 52,543 | $2.07M | 0.00% | −11,484−17.9% | Reduced |
| BNP Paribas Arbitrage, SA | 53,539 | $2.11M | 0.00% | −59,991−52.8% | Reduced |
| Quantinno Capital Management LP | 53,925 | $2.12M | 0.00% | −1,381−2.5% | Reduced |
| Prudential Financial Inc | 54,100 | $2.13M | 0.00% | +4,815+9.8% | Added |
| Bessemer Group Inc | 55,933 | $2.20M | 0.00% | −27,808−33.2% | Reduced |
| XTX Topco Ltd | 56,466 | $2.22M | 0.04% | +56,466 | New |
| Healthcare of Ontario Pension Plan Trust Fund | 57,148 | $2.25M | 0.00% | +57,148 | New |
| Alliancebernstein L.P. | 58,043 | $2.29M | 0.00% | +1,028+1.8% | Added |
| Susquehanna International Group, LLP | 59,747 | $2.35M | 0.00% | +39,504+195.1% | Added |
| Victory Capital Management Inc | 60,118 | $2.37M | 0.00% | −24,653−29.1% | Reduced |
| CWM Advisors, LLC | 62,712 | $2.47M | 0.14% | +8,780+16.3% | Added |
| Hussman Strategic Advisors, Inc. | 63,000 | $2.48M | 0.54% | 00.0% | Unchanged |
| California State Teachers Retirement System | 63,131 | $2.48M | 0.00% | +15,460+32.4% | Added |
| Millennium Management LLC | 65,560 | $2.58M | 0.00% | +42,060+179.0% | Added |
| Horiko Capital Management LLC | 66,000 | $2.60M | 0.60% | +66,000 | New |
| Mackenzie Financial Corp | 70,879 | $2.79M | 0.00% | +14,198+25.0% | Added |
| Gilder Gagnon Howe & Co LLC | 71,245 | $2.80M | 0.03% | +20,877+41.4% | Added |
| Y-Intercept (Hong Kong) Ltd | 76,212 | $3.00M | 0.06% | +76,212 | New |
| Deutsche Bank AG | 79,855 | $3.14M | 0.00% | +6,351+8.6% | Added |
| Intrinsic Edge Capital Management LLC | 80,000 | $3.15M | 0.57% | +80,000 | New |
| LPL Financial LLC | 83,038 | $3.27M | 0.00% | −27,582−24.9% | Reduced |
| Kendall Capital Management | 83,131 | $3.27M | 0.67% | −1,090−1.3% | Reduced |
| Portolan Capital Management, LLC | 83,256 | $3.28M | 0.17% | −202,250−70.8% | Reduced |
| SEI Investments Co | 85,005 | $3.34M | 0.00% | +26,560+45.4% | Added |
| Segall Bryant & Hamill, LLC | 87,964 | $3.46M | 0.05% | −18,591−17.4% | Reduced |
| RPg Family Wealth Advisory, LLC | 91,030 | $3.58M | 0.75% | −43,890−32.5% | Reduced |
| Group One Trading, L.P. | 91,427 | $3.60M | 0.12% | −15,686−14.6% | Reduced |
| UBS Asset Management Americas Inc | 92,243 | $3.63M | 0.00% | +6,327+7.4% | Added |
| Nearwater Capital Markets, Ltd | 94,200 | $3.71M | 0.09% | −256,600−73.1% | Reduced |
| Franklin Resources Inc | 96,422 | $3.79M | 0.00% | +96,422 | New |
| Thompson Siegel & Walmsley LLC | 101,100 | $3.98M | 0.07% | −87,400−46.4% | Reduced |
| Kennedy Capital Management, Inc. | 103,456 | $4.07M | 0.09% | −36,429−26.0% | Reduced |
| Swiss National Bank | 106,600 | $4.19M | 0.00% | +1,600+1.5% | Added |
| Nuveen, LLC | 111,889 | $4.40M | 0.00% | +4,527+4.2% | Added |
| Dodge & Cox | 119,892 | $4.72M | 0.00% | +7,500+6.7% | Added |
| Renaissance Technologies LLC | 122,600 | $4.82M | 0.01% | −1,839−1.5% | Reduced |
| Legal & General Group Plc | 126,296 | $4.97M | 0.00% | −7,726−5.8% | Reduced |
| HRT Financial LP | 129,328 | $5.09M | 0.01% | +30,988+31.5% | Added |
| Matthews International Capital Management LLC | 138,815 | $5.46M | 2.22% | −48,435−25.9% | Reduced |
| Rhumbline Advisers | 142,011 | $5.59M | 0.00% | +3,863+2.8% | Added |
| American Century Companies Inc | 150,549 | $5.92M | 0.00% | −1,437−0.9% | Reduced |
| Russell Investments Group, Ltd. | 160,933 | $6.33M | 0.01% | −3,375−2.1% | Reduced |
| Storebrand Asset Management AS | 180,000 | $7.08M | 0.02% | +180,000 | New |
| Public Sector Pension Investment Board | 190,626 | $7.50M | 0.02% | +6,281+3.4% | Added |
| Citadel Advisors LLC | 203,378 | $8.00M | 0.01% | +60,356+42.2% | Added |
| Wells Fargo & Company | 204,051 | $8.03M | 0.00% | +120,494+144.2% | Added |
| Ameriprise Financial Inc | 212,247 | $8.35M | 0.00% | −100,920−32.2% | Reduced |
| Price T Rowe Associates Inc | 216,955 | $8.54M | 0.00% | +169,606+358.2% | Added |
| Steamboat Capital Partners, LLC | 223,391 | $8.79M | 2.18% | −280,770−55.7% | Reduced |
| Kerrisdale Advisers, LLC | 223,755 | $8.80M | 3.35% | −39,727−15.1% | Reduced |
| Jacobs Levy Equity Management, Inc | 244,252 | $9.61M | 0.04% | +244,252 | New |
| New York State Common Retirement Fund | 259,436 | $10.2M | 0.01% | −44,107−14.5% | Reduced |
| Oasis Management Co Ltd. | 270,088 | $10.6M | 1.27% | +36,100+15.4% | Added |
| JPMorgan Chase & Co | 297,573 | $11.3M | 0.00% | +98,881+49.8% | Added |
| Toroso Investments, LLC | 313,815 | $12.3M | 0.04% | +132,839+73.4% | Added |
| Bank of New York Mellon Corp | 314,609 | $12.4M | 0.00% | −10,331−3.2% | Reduced |
| AQR Capital Management LLC | 323,412 | $12.7M | 0.01% | −20,191−5.9% | Reduced |
| Congress Asset Management Co | 339,863 | $13.4M | 0.10% | +50,414+17.4% | Added |
| Principal Financial Group Inc | 340,724 | $13.4M | 0.01% | −42,405−11.1% | Reduced |
| Vanguard Fiduciary Trust Co | 341,401 | $13.4M | 0.00% | +341,401 | New |
| Raiffeisen Bank International AG | 380,000 | $14.4M | 0.21% | −55,000−12.6% | Reduced |
| First Trust Advisors LP | 373,987 | $14.7M | 0.01% | +158,664+73.7% | Added |
| Penn Capital Management Co Inc | 397,766 | $15.7M | 1.22% | −38,077−8.7% | Reduced |
| Bank of America Corp | 402,412 | $15.8M | 0.00% | +100,700+33.4% | Added |
| UBS Group AG | 404,109 | $15.9M | 0.00% | −106,206−20.8% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 465,759 | $18.3M | 0.05% | −363,368−43.8% | Reduced |
| Charles Schwab Investment Management Inc | 481,219 | $18.9M | 0.00% | +2,886+0.6% | Added |
| LSV Asset Management | 545,307 | $21.5M | 0.05% | −1,835,214−77.1% | Reduced |
| Goldman Sachs Group Inc | 552,304 | $21.7M | 0.00% | +190,716+52.7% | Added |
| Northern Trust Corp | 562,535 | $22.1M | 0.00% | +18,476+3.4% | Added |
| Oxbow Capital Management (HK) Ltd | 596,689 | $23.5M | 6.33% | +596,689 | New |
| Cederberg Capital Ltd | 599,200 | $23.6M | 12.66% | −94,700−13.6% | Reduced |
| Wexford Capital LP | 599,246 | $23.6M | 3.89% | +264,243+78.9% | Added |
| Citigroup Inc | 619,892 | $24.4M | 0.02% | +576,140+1,316.8% | Added |
| FMR LLC | 629,244 | $24.8M | 0.00% | −174,422−21.7% | Reduced |
| Longaeva Partners L.P. | 708,379 | $27.9M | 1.34% | +708,379 | New |
| Tekne Capital Management, LLC | 715,000 | $28.1M | 11.89% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 719,023 | $28.3M | 0.01% | +485,282+207.6% | Added |
| Qube Research & Technologies Ltd | 724,405 | $28.5M | 0.04% | +578,346+396.0% | Added |
| Southeastern Asset Management IncSuperinvestorSoutheastern Asset Management (Longleaf) | 782,900 | $30.8M | 1.52% | −897,281−53.4% | Reduced |
| Invesco Ltd. | 787,101 | $31.0M | 0.00% | −555,035−41.4% | Reduced |
| Polunin Capital Partners Ltd | 763,318 | $31.8M | 8.25% | +763,318 | New |
| Value Aligned Research Advisors, LLC | 955,927 | $37.6M | 0.45% | +955,927 | New |
| Janus Henderson Group PLC | 1,085,634 | $42.7M | 0.02% | +2,652+0.2% | Added |
| Morgan Stanley | 1,192,705 | $46.9M | 0.00% | −199,601−14.3% | Reduced |
| Geode Capital Management, LLC | 1,371,227 | $54.0M | 0.00% | +28,328+2.1% | Added |
| WCM Investment Management, LLC | 1,860,874 | $70.6M | 0.16% | +1,849,914+16,878.8% | Added |
| State Street Corp | 2,006,116 | $78.9M | 0.00% | +48,075+2.5% | Added |
| Vanguard Portfolio Management LLC | 2,203,831 | $86.7M | 0.00% | +2,203,831 | New |
| Vanguard Capital Management LLC | 2,264,337 | $89.1M | 0.00% | +2,264,337 | New |