Acm Research Inc. Class AACMR
13F holders, Q4 2025 (December 31)279holders +21
49new positions
43sold out
6famous investors
$39.48avg. 13F price*
At the end of Q4 2025, 279 institutions reported holding Acm Research Inc. Class A (ACMR) in their 13F filings, up 21 from Q3 2025. 49 opened new positions and 43 sold out. The largest holders were BlackRock, Inc. ($311.2M), Vanguard Group Inc. ($196.1M) and LSV Asset Management ($93.9M). 6 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Cliff Asness (0.0% of AQR Capital Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Acm Research Inc. Class A
- CUSIP
- 00108J109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 49 | $106.1M |
| Exits | 43 | $40.5M |
All 13F filers, Q3 2025 → Q4 2025: 9,239,850 shares bought and 5,940,546 shares sold, net +3,299,304 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 279 holders
| BlackRock, Inc. | 0.01% | Add +4.0% | 7,888,480 | $311.2M |
| Vanguard Group Inc. | 0.00% | Add +2.6% | 4,972,103 | $196.1M |
| LSV Asset Management | 0.20% | Reduce -4.9% | 2,380,521 | $93.9M |
| State Street Corp. | 0.00% | Reduce -1.6% | 1,958,041 | $77.2M |
| Triata Capital Ltd | 9.23% | Reduce -3.7% | 1,929,919 | $76.1M |
| Southeastern Asset Management Inc. | 2.95% | Add +13.1% | 1,680,181 | $66.3M |
| Morgan Stanley | 0.00% | Add +58.8% | 1,392,306 | $54.9M |
| Geode Capital Management, LLC | 0.00% | Add +1.5% | 1,342,899 | $53.0M |
| Invesco Ltd. | 0.01% | Add +444.5% | 1,342,136 | $52.9M |
| Janus Henderson Group PLC | 0.02% | Add +1406.4% | 1,082,982 | $42.7M |
| Mitsubishi UFJ Trust & Banking Corp | 0.08% | Reduce -39.0% | 829,127 | $32.7M |
| FMR LLC | 0.00% | Add +223.8% | 803,666 | $31.7M |
| Tekne Capital Management, LLC | 10.07% | New | 715,000 | $28.2M |
| Cederberg Capital Ltd | 8.89% | Add +39.8% | 693,900 | $27.4M |
| Broad Bay Capital Management, LP | 2.94% | Reduce -35.6% | 652,214 | $25.7M |
| Northern Trust Corp. | 0.00% | Reduce -7.3% | 544,059 | $21.5M |
| UBS Group AG | 0.00% | Reduce -13.3% | 510,315 | $20.1M |
| Steamboat Capital Partners, LLC | 5.46% | Reduce -4.0% | 504,161 | $19.9M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +9.4% | 478,333 | $18.9M |
| Raiffeisen Bank International AG | 0.23% | No change | 435,000 | $17.5M |
| Penn Capital Management Company, LLC | 1.37% | New | 435,843 | $17.2M |
| Principal Financial Group Inc. | 0.01% | Add +13.7% | 383,129 | $15.1M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -46.3% | 361,588 | $14.3M |
| Nearwater Capital Markets, Ltd | 0.24% | New | 350,800 | $13.8M |
| AQR Capital Management | 0.01% | Reduce -3.7% | 343,603 | $13.6M |
| Wexford Capital LP | 3.40% | Add +80.2% | 335,003 | $13.2M |
| Bank of New York Mellon Corp | 0.00% | Reduce -11.3% | 324,940 | $12.8M |
| Ameriprise Financial Inc. | 0.00% | Reduce -1.1% | 313,167 | $12.4M |
| New York State Common Retirement Fund | 0.02% | Add +1819.6% | 303,543 | $12.0M |
| Bank of America Corp. | 0.00% | Add +62.4% | 301,712 | $11.9M |
| Discovery Capital Management, LLC / CT | 0.64% | Add +344.7% | 296,200 | $11.7M |
| Congress Asset Management Co. | 0.08% | Add +2.7% | 289,449 | $11.4M |
| Portolan Capital Management, LLC | 0.60% | Reduce -29.6% | 285,506 | $11.3M |
| Cerity Partners LLC | 0.02% | Add +611.0% | 268,337 | $10.6M |
| Kerrisdale Advisers, LLC | 4.90% | Add +49.2% | 263,482 | $10.4M |
| Oasis Management Co Ltd. | 1.42% | No change | 233,988 | $9.2M |
| Dimensional Fund Advisors LP | 0.00% | New | 233,741 | $9.2M |
| SG Americas Securities, LLC | 0.01% | Add +913.7% | 229,481 | $9.1M |
| First Trust Advisors LP | 0.01% | Add +182.4% | 215,323 | $8.5M |
| JPMorgan Chase & Co. | 0.00% | Add +592.6% | 198,692 | $7.8M |
| Thompson Siegel & Walmsley LLC | 0.13% | Add +71.8% | 188,500 | $7.4M |
| Matthews International Capital Management LLC | 2.24% | Reduce -8.0% | 187,250 | $7.4M |
| Public Sector Pension Investment Board | 0.02% | Reduce -10.1% | 184,345 | $7.3M |
| Tidal Investments LLC | 0.03% | Add +138.4% | 180,976 | $7.1M |
| Yiheng Capital Management, L.P. | 3.00% | Reduce -37.7% | 174,447 | $6.9M |
| Russell Investments Group, Ltd. | 0.01% | Add +47.9% | 164,308 | $6.5M |
| American Century Companies Inc. | 0.00% | Add +1.0% | 151,986 | $6.0M |
| Qube Research & Technologies Ltd | 0.01% | New | 146,059 | $5.8M |
| Citadel Advisors | 0.00% | Reduce -63.8% | 143,022 | $5.6M |
| Kennedy Capital Management LLC | 0.12% | New | 139,885 | $5.5M |
| Rhumbline Advisers | 0.00% | Reduce -6.5% | 138,148 | $5.4M |
| RPg Family Wealth Advisory, LLC | 1.17% | Reduce -13.9% | 134,920 | $5.3M |
| Legal & General Group Plc | 0.00% | Reduce -3.1% | 134,022 | $5.3M |
| Renaissance Technologies | 0.01% | Reduce -58.5% | 124,439 | $4.9M |
| Boothbay Fund Management, LLC | 0.13% | Reduce -39.0% | 119,094 | $4.7M |
| BNP Paribas Financial Markets | 0.00% | Add +15.5% | 113,530 | $4.5M |
| Dodge & Cox | 0.00% | Reduce -8.5% | 112,392 | $4.4M |
| Simplex Trading, LLC | 0.12% | Add +47.9% | 110,952 | $4.4M |
| LPL Financial LLC | 0.00% | Add +18.7% | 110,620 | $4.4M |
| Nuveen, LLC | 0.00% | Reduce -34.0% | 107,362 | $4.2M |
| Group One Trading LLC | 0.13% | Reduce -21.2% | 107,113 | $4.2M |
| Barclays PLC | 0.00% | Add +10.6% | 106,904 | $4.2M |
| Segall Bryant & Hamill, LLC | 0.06% | Reduce -1.3% | 106,555 | $4.2M |
| MY.Alpha Management HK Advisors Ltd | 2.23% | Reduce -70.7% | 105,605 | $4.2M |
| Swiss National Bank | 0.00% | Add +2.3% | 105,000 | $4.1M |
| HRT Financial LP | 0.01% | Add +170.3% | 98,340 | $3.9M |
| Walleye Trading LLC | 0.06% | Reduce -28.9% | 87,158 | $3.4M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +18.2% | 85,916 | $3.4M |
| Victory Capital Management Inc. | 0.00% | Reduce -2.2% | 84,771 | $3.3M |
| Kendall Capital Management | 0.69% | Add +9.7% | 84,221 | $3.3M |
| Bessemer Group Inc. | 0.01% | Add +66892.8% | 83,741 | $3.3M |
| Wells Fargo & Company | 0.00% | Add +26.1% | 83,557 | $3.3M |
| Centiva Capital, LP | 0.20% | New | 81,967 | $3.2M |
| Deutsche Bank AG | 0.00% | Reduce -56.8% | 73,504 | $2.9M |
| Inspire Advisors, LLC | 0.26% | New | 71,067 | $2.8M |
| Verition Fund Management LLC | 0.01% | Add +283.1% | 66,652 | $2.6M |
| Algert Global LLC | 0.04% | Add +13.1% | 66,474 | $2.6M |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 64,027 | $2.5M |
| Hussman Strategic Advisors, Inc. | 0.60% | Add +20.0% | 63,000 | $2.5M |
| Yong Rong (HK) Asset Management Ltd | 0.72% | New | 60,000 | $2.4M |
| Sei Investments Co. | 0.00% | Add +164.6% | 58,445 | $2.3M |
| Mackenzie Financial Corp. | 0.00% | Add +4.3% | 56,681 | $2.3M |
| Alliancebernstein L.P. | 0.00% | Add +14.1% | 57,015 | $2.2M |
| Quantinno Capital Management LP | 0.00% | New | 55,306 | $2.2M |
| Guggenheim Capital LLC | 0.02% | Add +318.9% | 54,571 | $2.2M |
| Massar Capital Management, LP | 0.42% | New | 54,135 | $2.1M |
| Inspire Investing, LLC | 0.19% | Add +82.8% | 53,932 | $2.1M |
| Gilder Gagnon Howe & Co. LLC | 0.02% | Add +0.0% | 50,368 | $2.0M |
| Capelight Capital Asset Management LP | 2.03% | — | 50,000 | $2.0M |
| Prudential Financial Inc. | 0.00% | Reduce -6.6% | 49,285 | $1.9M |
| Weiss Asset Management LP | 0.04% | New | 49,170 | $1.9M |
| California State Teachers Retirement System | 0.00% | Reduce -0.1% | 47,671 | $1.9M |
| T. Rowe Price Associates Inc. | 0.00% | Add +4.4% | 47,349 | $1.9M |
| CANADA LIFE ASSURANCE Co | 0.00% | No change | 45,036 | $1.8M |
| Citigroup Inc. | 0.00% | Add +80.6% | 43,752 | $1.7M |
| Focus Partners Wealth | 0.00% | New | 42,398 | $1.7M |
| Raymond James Financial Inc. | 0.00% | Reduce -6.3% | 40,231 | $1.6M |
| NorthCrest Asset Manangement, LLC | 0.03% | Add +0.0% | 33,580 | $1.5M |
| Thrivent Financial for Lutherans | 0.00% | Reduce -3.6% | 36,604 | $1.4M |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | 0.04% | Reduce -54.7% | 35,958 | $1.4M |
"% of holder's portfolio" is ACMR's weight in each manager's 13F, not the share of Acm Research Inc. Class A the manager owns.