Acm Research Inc. Class AACMR
13F holders, Q2 2026 (June 30)376holders +75
116new positions
39sold out
9famous investors
$126.10avg. 13F price*
At the end of Q2 2026, 376 institutions reported holding Acm Research Inc. Class A (ACMR) in their 13F filings, up 75 from Q1 2026. 116 opened new positions and 39 sold out. The largest holders were BlackRock, Inc. ($1.1B), Vanguard Portfolio Management LLC ($425.0M) and Vanguard Capital Management LLC ($312.5M). 9 famous investors held it, including George Soros (0.1% of Soros Fund Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Acm Research Inc. Class A
- CUSIP
- 00108J109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 116 | $747.2M |
| Exits | 39 | $55.7M |
All 13F filers, Q1 2026 → Q2 2026: 12,722,967 shares bought and 8,088,697 shares sold, net +4,634,270 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 376 holders
| BlackRock, Inc. | 0.02% | Add +8.5% | 8,660,842 | $1.1B |
| Vanguard Portfolio Management LLC | 0.02% | Add +52.0% | 3,349,436 | $425.0M |
| Vanguard Capital Management LLC | 0.01% | Add +8.8% | 2,462,745 | $312.5M |
| Capital World Investors | 0.04% | New | 2,398,036 | $304.3M |
| State Street Corp. | 0.01% | Add +9.1% | 2,188,254 | $277.7M |
| Geode Capital Management, LLC | 0.01% | Add +8.5% | 1,487,797 | $188.8M |
| Invesco Ltd. | 0.01% | Add +48.7% | 1,170,080 | $148.5M |
| Value Aligned Research Advisors, LLC | 0.80% | Add +10.3% | 1,053,949 | $133.7M |
| WFM ASIA (BVI) Ltd | 18.56% | New | 969,200 | $123.0M |
| Dimensional Fund Advisors LP | 0.02% | Add +32.8% | 954,474 | $121.1M |
| WCM Investment Management, LLC | 0.20% | Reduce -50.7% | 917,651 | $109.1M |
| Tekne Capital Management, LLC | 30.62% | Add +3.1% | 737,500 | $93.6M |
| Morgan Stanley | 0.00% | Reduce -41.3% | 700,185 | $88.8M |
| FMR LLC | 0.00% | Add +6.8% | 672,184 | $85.3M |
| Fuller & Thaler Asset Management, Inc. | 0.22% | New | 639,448 | $81.1M |
| Gilder Gagnon Howe & Co. LLC | 0.83% | Add +794.2% | 637,058 | $80.8M |
| Citadel Advisors | 0.05% | Add +213.1% | 636,836 | $80.8M |
| Capital International Investors | 0.02% | New | 623,429 | $79.1M |
| Polunin Capital Partners Ltd | 18.92% | Reduce -1.9% | 748,498 | $77.1M |
| T. Rowe Price Associates Inc. | 0.01% | Add +172.7% | 591,573 | $75.1M |
| Northern Trust Corp. | 0.01% | Add +1.2% | 569,126 | $72.2M |
| Jupiter Topco LLC | 0.03% | — | 553,768 | $70.2M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +9.5% | 526,760 | $66.8M |
| Bank of America Corp. | 0.00% | Add +19.2% | 479,706 | $60.9M |
| Tidal Investments LLC | 0.14% | Add +50.1% | 470,937 | $59.8M |
| Goldman Sachs Group Inc. | 0.01% | Reduce -22.8% | 426,243 | $54.1M |
| Vanguard Fiduciary Trust Co. | 0.01% | Add +18.4% | 404,100 | $51.3M |
| UBS Group AG | 0.01% | Reduce -0.4% | 402,473 | $51.1M |
| Principal Financial Group Inc. | 0.02% | Add +8.9% | 370,913 | $47.1M |
| Wexford Capital LP | 6.19% | Reduce -40.7% | 355,400 | $45.1M |
| Mitsubishi UFJ Trust & Banking Corp | 0.10% | Reduce -24.6% | 351,204 | $44.6M |
| Raiffeisen Bank International AG | 0.50% | Reduce -5.3% | 360,000 | $42.8M |
| Bank of New York Mellon Corp | 0.01% | Add +3.7% | 326,284 | $41.4M |
| AQR Capital Management | 0.01% | Reduce -2.9% | 314,172 | $39.9M |
| First Trust Advisors LP | 0.02% | Reduce -18.2% | 306,034 | $38.8M |
| Penn Capital Management Company, LLC | 2.30% | Reduce -28.1% | 285,790 | $36.3M |
| Qube Research & Technologies Ltd | 0.04% | Reduce -61.4% | 280,015 | $35.5M |
| Oasis Management Co Ltd. | 4.11% | Add +1.6% | 274,525 | $34.8M |
| Mackenzie Financial Corp. | 0.03% | Add +278.1% | 268,004 | $34.0M |
| Cederberg Capital Ltd | 32.20% | Reduce -57.5% | 254,669 | $32.3M |
| Susquehanna International Group, LLP | 0.03% | Add +324.6% | 253,671 | $32.2M |
| MY.Alpha Management HK Advisors Ltd | 12.19% | New | 249,500 | $31.7M |
| Renaissance Technologies | 0.04% | Add +87.4% | 229,800 | $29.2M |
| 12 West Capital Management LP | 5.34% | Add +3588.5% | 225,000 | $28.6M |
| Congress Asset Management Co. | 0.17% | Reduce -34.1% | 223,855 | $28.4M |
| Russell Investments Group, Ltd. | 0.02% | Add +37.8% | 221,775 | $28.1M |
| Two Sigma Investments, LP | 0.02% | Add +305.5% | 212,544 | $27.0M |
| Citigroup Inc. | 0.01% | Reduce -66.2% | 209,845 | $26.6M |
| JPMorgan Chase & Co. | 0.00% | Reduce -27.8% | 214,853 | $25.8M |
| Public Sector Pension Investment Board | 0.07% | Add +2.8% | 196,012 | $24.9M |
| Jacobs Levy Equity Management, Inc. | 0.09% | Reduce -21.4% | 191,966 | $24.4M |
| New York State Common Retirement Fund | 0.03% | Reduce -26.2% | 191,535 | $24.3M |
| Steamboat Capital Partners, LLC | 4.96% | Reduce -18.2% | 182,773 | $23.2M |
| Portolan Capital Management, LLC | 0.84% | Add +113.1% | 177,432 | $22.5M |
| Wellington Management Group LLP | 0.00% | New | 174,987 | $22.2M |
| Nomura Asset Management International Inc. | 0.03% | Add +907.9% | 169,322 | $21.5M |
| Group One Trading LLC | 0.57% | Add +71.8% | 157,056 | $19.9M |
| Nuveen, LLC | 0.00% | Add +32.7% | 148,494 | $18.8M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +58.7% | 146,414 | $18.6M |
| Franklin Resources Inc. | 0.00% | Add +50.8% | 145,385 | $18.4M |
| Millennium Management | 0.01% | Add +114.3% | 140,501 | $17.8M |
| Southeastern Asset Management Inc. | 0.92% | Reduce -82.2% | 139,478 | $17.7M |
| Matthews International Capital Management LLC | 5.76% | Reduce -4.6% | 132,396 | $16.8M |
| Rhumbline Advisers | 0.01% | Reduce -9.2% | 128,979 | $16.4M |
| Legal & General Group Plc | 0.00% | Reduce -0.5% | 125,619 | $15.9M |
| BRIGHT VALLEY CAPITAL Ltd | 4.29% | New | 118,000 | $15.0M |
| Dodge & Cox | 0.01% | Reduce -2.9% | 116,392 | $14.8M |
| Ameriprise Financial Inc. | 0.00% | Reduce -45.7% | 115,178 | $14.6M |
| Horiko Capital Management LLC | 2.38% | Add +61.6% | 106,628 | $13.5M |
| Thompson Siegel & Walmsley LLC | 0.24% | Add +4.6% | 105,790 | $13.4M |
| Swiss National Bank | 0.01% | Reduce -2.8% | 103,600 | $13.1M |
| American Century Companies Inc. | 0.01% | Reduce -32.8% | 101,200 | $12.8M |
| RPg Family Wealth Advisory, LLC | 2.08% | Add +7.8% | 98,166 | $12.5M |
| LPL Financial LLC | 0.00% | Add +12.3% | 93,288 | $11.8M |
| Deutsche Bank AG | 0.00% | Add +13.3% | 90,500 | $11.5M |
| BNP Paribas Financial Markets | 0.01% | Add +61.3% | 86,340 | $11.0M |
| Storebrand Asset Management As | 0.03% | Reduce -55.3% | 80,510 | $10.2M |
| Intrinsic Edge Capital Management LLC | 1.25% | No change | 80,000 | $10.2M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.01% | Add +30.9% | 74,778 | $9.5M |
| Kendall Capital Management | 1.54% | Reduce -12.4% | 72,820 | $9.2M |
| Aperture Investors, LLC | 0.95% | Add +244.5% | 70,569 | $9.0M |
| Lazard Asset Management LLC | 0.01% | Add +48.2% | 63,784 | $8.1M |
| Atika Capital Management LLC | 0.79% | New | 63,000 | $8.0M |
| Inspire Investing, LLC | 0.33% | Add +0.4% | 62,959 | $8.0M |
| Kerrisdale Advisers, LLC | 1.99% | Reduce -72.0% | 62,570 | $7.9M |
| California State Teachers Retirement System | 0.01% | Reduce -5.4% | 59,702 | $7.6M |
| Wells Fargo & Company | 0.00% | Reduce -71.3% | 58,627 | $7.4M |
| Prudential Financial Inc. | 0.01% | Add +8.1% | 58,505 | $7.4M |
| Bessemer Group Inc. | 0.01% | Add +0.1% | 55,961 | $7.1M |
| Quantinno Capital Management LP | 0.01% | Add +0.5% | 54,218 | $6.9M |
| Quadrature Capital Ltd | 0.05% | New | 48,891 | $6.2M |
| CANADA LIFE ASSURANCE Co | 0.01% | Add +4.5% | 45,391 | $5.7M |
| Simplex Trading, LLC | 0.15% | Add +81.2% | 44,316 | $5.6M |
| Focus Partners Wealth | 0.01% | Add +3.9% | 43,904 | $5.6M |
| Neuberger Berman Group LLC | 0.00% | Add +74.8% | 44,245 | $5.4M |
| SG Americas Securities, LLC | 0.00% | Add +94.8% | 41,603 | $5.3M |
| CenterBook Partners LP | 0.26% | New | 41,438 | $5.3M |
| Barclays PLC | 0.00% | Reduce -18.0% | 40,321 | $5.1M |
| Sei Investments Co. | 0.00% | Reduce -52.6% | 40,313 | $5.1M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | Add +7.9% | 38,739 | $4.9M |
"% 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.