Acm Research Inc. Class AACMR
13F holders, Q3 2025 (September 30)258holders +15
60new positions
45sold out
7famous investors
$39.13avg. 13F price*
At the end of Q3 2025, 258 institutions reported holding Acm Research Inc. Class A (ACMR) in their 13F filings, up 15 from Q2 2025. 60 opened new positions and 45 sold out. The largest holders were BlackRock, Inc. ($296.9M), Vanguard Group Inc. ($189.6M) and LSV Asset Management ($98.0M). 7 famous investors held it, including Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies'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 Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 60 | $112.3M |
| Exits | 45 | $87.4M |
All 13F filers, Q2 2025 → Q3 2025: 13,290,174 shares bought and 8,929,389 shares sold, net +4,360,785 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 258 holders
| BlackRock, Inc. | 0.01% | Add +84.8% | 7,587,539 | $296.9M |
| Vanguard Group Inc. | 0.00% | Add +12.8% | 4,846,413 | $189.6M |
| LSV Asset Management | 0.22% | Add +462.9% | 2,504,305 | $98.0M |
| Triata Capital Ltd | 9.15% | Add +26.0% | 2,003,225 | $78.4M |
| State Street Corp. | 0.00% | Add +58.6% | 1,990,254 | $77.9M |
| Southeastern Asset Management Inc. | 2.97% | Add +25.3% | 1,485,687 | $58.1M |
| Mitsubishi UFJ Trust & Banking Corp | 0.12% | Reduce -40.9% | 1,359,969 | $53.2M |
| Geode Capital Management, LLC | 0.00% | Add +6.9% | 1,323,502 | $51.8M |
| Federated Hermes, Inc. | 0.07% | Reduce -25.4% | 1,061,236 | $41.5M |
| Broad Bay Capital Management, LP | 4.94% | Add +3.5% | 1,012,414 | $39.6M |
| Morgan Stanley | 0.00% | Add +58.9% | 876,966 | $34.3M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -13.0% | 673,241 | $26.3M |
| UBS Group AG | 0.00% | Add +51.9% | 588,540 | $23.0M |
| Northern Trust Corp. | 0.00% | Add +4.3% | 587,108 | $23.0M |
| Steamboat Capital Partners, LLC | 5.37% | Reduce -9.5% | 525,000 | $20.5M |
| Cederberg Capital Ltd | 5.55% | New | 496,500 | $19.4M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +6.5% | 437,158 | $17.1M |
| Raiffeisen Bank International AG | 0.22% | No change | 435,000 | $16.8M |
| Portolan Capital Management, LLC | 0.86% | New | 405,860 | $15.9M |
| Citadel Advisors | 0.01% | Add +93.6% | 394,969 | $15.5M |
| Bank of New York Mellon Corp | 0.00% | Add +63.4% | 366,214 | $14.3M |
| MY.Alpha Management HK Advisors Ltd | 9.13% | New | 360,237 | $14.1M |
| AQR Capital Management | 0.01% | Reduce -13.7% | 356,741 | $14.0M |
| Principal Financial Group Inc. | 0.01% | Add +396.3% | 336,993 | $13.2M |
| Ameriprise Financial Inc. | 0.00% | Add +59.4% | 316,504 | $12.4M |
| Renaissance Technologies | 0.02% | Add +710.6% | 299,925 | $11.7M |
| Congress Asset Management Co. | 0.07% | Add +43.0% | 281,923 | $11.0M |
| Yiheng Capital Management, L.P. | 3.63% | No change | 280,201 | $11.0M |
| FMR LLC | 0.00% | Add +35.5% | 248,171 | $9.7M |
| Invesco Ltd. | 0.00% | Reduce -70.2% | 246,502 | $9.6M |
| Oasis Management Co Ltd. | 2.03% | Reduce -37.9% | 233,988 | $9.2M |
| Millennium Management | 0.01% | Reduce -59.4% | 210,338 | $8.2M |
| Public Sector Pension Investment Board | 0.03% | New | 205,115 | $8.0M |
| Matthews International Capital Management LLC | 1.86% | Reduce -8.0% | 203,511 | $8.0M |
| Boothbay Fund Management, LLC | 0.20% | Add +25.5% | 195,120 | $7.6M |
| Two Sigma Investments, LP | 0.01% | New | 194,338 | $7.6M |
| Seldon Capital LP | 2.66% | New | 193,242 | $7.6M |
| Wexford Capital LP | 2.19% | Add +74.7% | 185,942 | $7.3M |
| Bank of America Corp. | 0.00% | Reduce -23.2% | 185,834 | $7.3M |
| Kerrisdale Advisers, LLC | 3.58% | Reduce -38.4% | 176,581 | $6.9M |
| Jane Street Group, LLC | 0.01% | Reduce -32.6% | 175,317 | $6.9M |
| Deutsche Bank AG | 0.00% | Reduce -28.8% | 170,074 | $6.7M |
| Nuveen, LLC | 0.00% | Reduce -77.2% | 162,788 | $6.4M |
| RPg Family Wealth Advisory, LLC | 1.34% | Add +64.2% | 156,670 | $6.1M |
| American Century Companies Inc. | 0.00% | Add +9.2% | 150,522 | $5.9M |
| Rhumbline Advisers | 0.00% | Add +81.4% | 147,794 | $5.8M |
| Nomura Holdings Inc. | 0.03% | New | 144,492 | $5.7M |
| Legal & General Group Plc | 0.00% | Add +138.0% | 138,293 | $5.4M |
| Group One Trading LLC | 0.16% | Add +377.5% | 135,856 | $5.3M |
| Dodge & Cox | 0.00% | Add +51.5% | 122,892 | $4.8M |
| Walleye Trading LLC | 0.08% | Add +9282.3% | 122,533 | $4.8M |
| Susquehanna International Group, LLP | 0.01% | Reduce -51.8% | 120,606 | $4.7M |
| D. E. Shaw & Co. | 0.00% | New | 113,584 | $4.4M |
| Marshall Wace, LLP | 0.00% | Reduce -51.5% | 113,530 | $4.4M |
| Russell Investments Group, Ltd. | 0.01% | Reduce -7.5% | 111,101 | $4.3M |
| Thompson Siegel & Walmsley LLC | 0.07% | Add +40.6% | 109,700 | $4.3M |
| Segall Bryant & Hamill, LLC | 0.06% | Add +9.8% | 107,980 | $4.2M |
| Swiss National Bank | 0.00% | Add +2.1% | 102,600 | $4.0M |
| BNP Paribas Financial Markets | 0.00% | Add +541.1% | 98,257 | $3.8M |
| Barclays PLC | 0.00% | Reduce -27.6% | 96,663 | $3.8M |
| LPL Financial LLC | 0.00% | Reduce -31.4% | 93,190 | $3.6M |
| Victory Capital Management Inc. | 0.00% | Add +461.5% | 86,672 | $3.4M |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | 0.10% | Reduce -13.8% | 79,396 | $3.1M |
| Kendall Capital Management | 0.68% | Add +42.0% | 76,771 | $3.0M |
| First Trust Advisors LP | 0.00% | Reduce -7.1% | 76,243 | $3.0M |
| Tidal Investments LLC | 0.01% | Add +198.0% | 75,913 | $3.0M |
| Simplex Trading, LLC | 0.06% | Reduce -21.6% | 75,018 | $2.9M |
| Tudor Investment Corporation | 0.02% | Reduce -69.1% | 74,474 | $2.9M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -86.6% | 72,667 | $2.8M |
| Janus Henderson Group PLC | 0.00% | Reduce -9.4% | 71,894 | $2.8M |
| Discovery Capital Management, LLC / CT | 0.14% | New | 66,600 | $2.6M |
| Wells Fargo & Company | 0.00% | Reduce -66.4% | 66,248 | $2.6M |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 64,027 | $2.5M |
| Algert Global LLC | 0.04% | Reduce -75.2% | 58,794 | $2.3M |
| Mackenzie Financial Corp. | 0.00% | Reduce -13.7% | 54,337 | $2.1M |
| Prudential Financial Inc. | 0.00% | New | 52,745 | $2.1M |
| Hussman Strategic Advisors, Inc. | 0.44% | New | 52,500 | $2.1M |
| Campbell & CO Investment Adviser LLC | 0.15% | New | 51,822 | $2.0M |
| Pictet Asset Management Holding SA | 0.00% | Add +0.1% | 50,893 | $2.0M |
| Gilder Gagnon Howe & Co. LLC | 0.02% | Add +1.5% | 50,367 | $2.0M |
| Alliancebernstein L.P. | 0.00% | Add +2.9% | 49,967 | $2.0M |
| Teacher Retirement System of Texas | 0.01% | Add +1.6% | 48,619 | $1.9M |
| California State Teachers Retirement System | 0.00% | Add +0.0% | 47,715 | $1.9M |
| ExodusPoint Capital Management, LP | 0.03% | Add +63.1% | 47,411 | $1.9M |
| Royal Bank of Canada | 0.00% | Reduce -61.7% | 46,071 | $1.8M |
| T. Rowe Price Associates Inc. | 0.00% | Add +7.8% | 45,368 | $1.8M |
| CANADA LIFE ASSURANCE Co | 0.00% | Add +679.4% | 45,036 | $1.7M |
| Raymond James Financial Inc. | 0.00% | Reduce -17.6% | 42,943 | $1.7M |
| Thrivent Financial for Lutherans | 0.00% | New | 37,984 | $1.5M |
| Cerity Partners LLC | 0.00% | Add +5.3% | 37,743 | $1.5M |
| HRT Financial LP | 0.01% | Reduce -82.3% | 36,379 | $1.4M |
| Ieq Capital, LLC | 0.00% | Reduce -31.4% | 35,805 | $1.4M |
| Two Sigma Advisers, LP | 0.00% | New | 35,400 | $1.4M |
| Allspring Global Investments Holdings, LLC | 0.00% | Reduce -1.9% | 31,326 | $1.4M |
| NorthCrest Asset Manangement, LLC | 0.03% | Add +27.8% | 33,570 | $1.4M |
| Franklin Resources Inc. | 0.00% | Add +4.2% | 33,245 | $1.3M |
| Illumine Investment Management, LLC | 0.88% | Reduce -1.5% | 31,380 | $1.2M |
| MetLife Investment Management, LLC | 0.01% | No change | 30,677 | $1.2M |
| Inspire Investing, LLC | 0.11% | New | 29,496 | $1.2M |
| Virtus Advisers, LLC | 0.64% | Reduce -7.5% | 28,954 | $1.1M |
"% 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.