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