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 $6.13B in total; 3 superinvestors hold it, including Southeastern Asset Management (Longleaf) and Soros Fund Management.
13F holders, Q2 2026
Institutional positions in ACM Research, Inc. as of Jun 30, 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
- 377
- +81 vs. Q1 2026
- Shares held
- 48.6M
- +5.32M (+12.3%) vs. Q1 2026
- Total value
- $6.13B
- +$4.43B (+260.5%) vs. Q1 2026
- New holders
- 120
- 126 more added
- Sold out
- 39
- 93 more reduced
5 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 | $6.13B |
| Q1 2026 | 301 | $1.74B |
| Q4 2025 | 279 | $1.79B |
| Q3 2025 | 260 | $1.64B |
| Q2 2025 | 243 | $972.3M |
| Q1 2025 | 244 | $838.9M |
| Q4 2024 | 183 | $539.4M |
| Q3 2024 | 185 | $659.6M |
| Q2 2024 | 201 | $793.3M |
| Q1 2024 | 201 | $1.05B |
| Q4 2023 | 156 | $669.5M |
| Q3 2023 | 154 | $562.8M |
| Q2 2023 | 122 | $382.7M |
| Q1 2023 | 130 | $344.4M |
| Q4 2022 | 123 | $235.2M |
| Q3 2022 | 117 | $435.4M |
| Q2 2022 | 98 | $609.6M |
| Q1 2022 | 96 | $606.7M |
| Q4 2021 | 100 | $750.7M |
| Q3 2021 | 96 | $979.6M |
| Q2 2021 | 94 | $753.5M |
| Q1 2021 | 94 | $586.5M |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding ACM Research, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8,660,842 | $1.10B | 0.02% | +675,995+8.5% | Added |
| Vanguard Portfolio Management LLC | 3,349,436 | $425.0M | 0.02% | +1,145,605+52.0% | Added |
| Vanguard Capital Management LLC | 2,462,745 | $312.5M | 0.01% | +198,408+8.8% | Added |
| Capital World Investors | 2,398,036 | $304.3M | 0.04% | +2,398,036 | New |
| State Street Corp | 2,188,254 | $277.7M | 0.01% | +182,138+9.1% | Added |
| Geode Capital Management, LLC | 1,487,797 | $188.8M | 0.01% | +116,570+8.5% | Added |
| Invesco Ltd. | 1,170,080 | $148.5M | 0.01% | +382,979+48.7% | Added |
| Value Aligned Research Advisors, LLC | 1,053,949 | $133.7M | 0.80% | +98,022+10.3% | Added |
| Ward Ferry Management (BVI) Ltd | 969,200 | $123.0M | 18.56% | +969,200 | New |
| Dimensional Fund Advisors LP | 954,474 | $121.1M | 0.02% | +235,451+32.7% | Added |
| WCM Investment Management, LLC | 917,651 | $109.1M | 0.20% | −943,223−50.7% | Reduced |
| Tekne Capital Management, LLC | 737,500 | $93.6M | 30.62% | +22,500+3.1% | Added |
| Morgan Stanley | 700,185 | $88.8M | 0.00% | −492,520−41.3% | Reduced |
| FMR LLC | 672,184 | $85.3M | 0.00% | +42,940+6.8% | Added |
| Fuller & Thaler Asset Management, Inc. | 639,448 | $81.1M | 0.22% | +639,448 | New |
| Gilder Gagnon Howe & Co LLC | 637,058 | $80.8M | 0.83% | +565,813+794.2% | Added |
| Citadel Advisors LLC | 636,836 | $80.8M | 0.05% | +433,458+213.1% | Added |
| Capital International Investors | 623,429 | $79.1M | 0.02% | +623,429 | New |
| Polunin Capital Partners Ltd | 748,498 | $77.1M | 18.92% | −14,820−1.9% | Reduced |
| Price T Rowe Associates Inc | 591,573 | $75.1M | 0.01% | +374,618+172.7% | Added |
| Northern Trust Corp | 569,126 | $72.2M | 0.01% | +6,591+1.2% | Added |
| Jupiter Topco LLC | 553,768 | $70.2M | 0.03% | +553,768 | New |
| Charles Schwab Investment Management Inc | 526,760 | $66.8M | 0.01% | +45,541+9.5% | Added |
| Bank of America Corp | 479,706 | $60.9M | 0.00% | +77,294+19.2% | Added |
| Toroso Investments, LLC | 470,937 | $59.8M | 0.14% | +157,122+50.1% | Added |
| Goldman Sachs Group Inc | 426,243 | $54.1M | 0.01% | −126,061−22.8% | Reduced |
| Vanguard Fiduciary Trust Co | 404,100 | $51.3M | 0.01% | +62,699+18.4% | Added |
| UBS Group AG | 402,473 | $51.1M | 0.01% | −1,636−0.4% | Reduced |
| Principal Financial Group Inc | 370,913 | $47.1M | 0.02% | +30,189+8.9% | Added |
| Wexford Capital LP | 355,400 | $45.1M | 6.19% | −243,846−40.7% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 351,204 | $44.6M | 0.10% | −114,555−24.6% | Reduced |
| Raiffeisen Bank International AG | 360,000 | $42.8M | 0.50% | −20,000−5.3% | Reduced |
| Bank of New York Mellon Corp | 326,284 | $41.4M | 0.01% | +11,675+3.7% | Added |
| AQR Capital Management LLC | 314,172 | $39.9M | 0.01% | −9,240−2.9% | Reduced |
| First Trust Advisors LP | 306,034 | $38.8M | 0.02% | −67,953−18.2% | Reduced |
| Penn Capital Management Co Inc | 285,790 | $36.3M | 2.30% | −111,976−28.2% | Reduced |
| Qube Research & Technologies Ltd | 280,015 | $35.5M | 0.04% | −444,390−61.3% | Reduced |
| Oasis Management Co Ltd. | 274,525 | $34.8M | 3.76% | +4,437+1.6% | Added |
| Mackenzie Financial Corp | 268,004 | $34.0M | 0.03% | +197,125+278.1% | Added |
| Cederberg Capital Ltd | 254,669 | $32.3M | 32.20% | −344,531−57.5% | Reduced |
| Susquehanna International Group, LLP | 253,671 | $32.2M | 0.03% | +193,924+324.6% | Added |
| MY.Alpha Management HK Advisors Ltd | 249,500 | $31.7M | 12.19% | +249,500 | New |
| Renaissance Technologies LLC | 229,800 | $29.2M | 0.04% | +107,200+87.4% | Added |
| 12 West Capital Management LP | 225,000 | $28.6M | 5.34% | +218,900+3,588.5% | Added |
| Congress Asset Management Co | 223,855 | $28.4M | 0.17% | −116,008−34.1% | Reduced |
| Russell Investments Group, Ltd. | 221,775 | $28.1M | 0.02% | +60,842+37.8% | Added |
| Two Sigma Investments, LP | 212,544 | $27.0M | 0.02% | +160,128+305.5% | Added |
| Citigroup Inc | 209,845 | $26.6M | 0.01% | −410,047−66.1% | Reduced |
| JPMorgan Chase & Co | 214,853 | $25.8M | 0.00% | −82,720−27.8% | Reduced |
| RPg Family Wealth Advisory, LLC | 196,332 | $24.9M | 2.30% | +105,302+115.7% | Added |
| Public Sector Pension Investment Board | 196,012 | $24.9M | 0.07% | +5,386+2.8% | Added |
| Jacobs Levy Equity Management, Inc | 191,966 | $24.4M | 0.09% | −52,286−21.4% | Reduced |
| New York State Common Retirement Fund | 191,535 | $24.3M | 0.03% | −67,901−26.2% | Reduced |
| Steamboat Capital Partners, LLC | 182,773 | $23.2M | 4.96% | −40,618−18.2% | Reduced |
| Portolan Capital Management, LLC | 177,432 | $22.5M | 0.84% | +94,176+113.1% | Added |
| Wellington Management Group LLP | 174,987 | $22.2M | 0.00% | +174,987 | New |
| Nomura Asset Management International Inc. | 169,322 | $21.5M | 0.03% | +152,522+907.9% | Added |
| Group One Trading, L.P. | 157,056 | $19.9M | 0.57% | +65,629+71.8% | Added |
| Nuveen, LLC | 148,494 | $18.8M | 0.00% | +36,605+32.7% | Added |
| UBS Asset Management Americas Inc | 146,414 | $18.6M | 0.00% | +54,171+58.7% | Added |
| Franklin Resources Inc | 145,385 | $18.4M | 0.00% | +48,963+50.8% | Added |
| Millennium Management LLC | 140,501 | $17.8M | 0.01% | +74,941+114.3% | Added |
| Southeastern Asset Management IncSuperinvestorSoutheastern Asset Management (Longleaf) | 139,478 | $17.7M | 0.92% | −643,422−82.2% | Reduced |
| Matthews International Capital Management LLC | 132,396 | $16.8M | 5.76% | −6,419−4.6% | Reduced |
| Rhumbline Advisers | 128,979 | $16.4M | 0.01% | −13,032−9.2% | Reduced |
| Legal & General Group Plc | 125,619 | $15.9M | 0.00% | −677−0.5% | Reduced |
| Bright Valley Capital Ltd | 118,000 | $15.0M | 4.29% | +118,000 | New |
| Dodge & Cox | 116,392 | $14.8M | 0.01% | −3,500−2.9% | Reduced |
| Ameriprise Financial Inc | 115,178 | $14.6M | 0.00% | −97,069−45.7% | Reduced |
| Horiko Capital Management LLC | 106,628 | $13.5M | 2.38% | +40,628+61.6% | Added |
| Thompson Siegel & Walmsley LLC | 105,790 | $13.4M | 0.24% | +4,690+4.6% | Added |
| Swiss National Bank | 103,600 | $13.1M | 0.01% | −3,000−2.8% | Reduced |
| American Century Companies Inc | 101,200 | $12.8M | 0.01% | −49,349−32.8% | Reduced |
| LPL Financial LLC | 93,288 | $11.8M | 0.00% | +10,250+12.3% | Added |
| Deutsche Bank AG | 90,500 | $11.5M | 0.00% | +10,645+13.3% | Added |
| BNP Paribas Arbitrage, SA | 86,340 | $11.0M | 0.01% | +32,801+61.3% | Added |
| Storebrand Asset Management AS | 80,510 | $10.2M | 0.03% | −99,490−55.3% | Reduced |
| Intrinsic Edge Capital Management LLC | 80,000 | $10.2M | 1.25% | 00.0% | Unchanged |
| Healthcare of Ontario Pension Plan Trust Fund | 74,778 | $9.49M | 0.01% | +17,630+30.8% | Added |
| Kendall Capital Management | 72,820 | $9.24M | 1.54% | −10,311−12.4% | Reduced |
| Aperture Investors, LLC | 70,569 | $8.95M | 0.95% | +50,085+244.5% | Added |
| Lazard Asset Management LLC | 63,784 | $8.09M | 0.01% | +20,750+48.2% | Added |
| Atika Capital Management LLC | 63,000 | $7.99M | 0.79% | +63,000 | New |
| CWM Advisors, LLC | 62,959 | $7.99M | 0.33% | +247+0.4% | Added |
| Kerrisdale Advisers, LLC | 62,570 | $7.94M | 1.99% | −161,185−72.0% | Reduced |
| California State Teachers Retirement System | 59,702 | $7.58M | 0.01% | −3,429−5.4% | Reduced |
| Wells Fargo & Company | 58,627 | $7.44M | 0.00% | −145,424−71.3% | Reduced |
| Prudential Financial Inc | 58,505 | $7.42M | 0.01% | +4,405+8.1% | Added |
| Bessemer Group Inc | 55,961 | $7.10M | 0.01% | +28+0.1% | Added |
| Quantinno Capital Management LP | 54,218 | $6.88M | 0.01% | +293+0.5% | Added |
| Quadrature Capital Ltd | 48,891 | $6.20M | 0.05% | +48,891 | New |
| Great West Life Assurance Co | 45,391 | $5.75M | 0.01% | +1,965+4.5% | Added |
| Simplex Trading, LLC | 44,316 | $5.62M | 0.15% | +19,852+81.1% | Added |
| Colony Group, LLC | 43,904 | $5.57M | 0.01% | +1,645+3.9% | Added |
| Neuberger Berman Group LLC | 44,245 | $5.42M | 0.00% | +18,929+74.8% | Added |
| SG Americas Securities, LLC | 41,603 | $5.28M | 0.00% | +20,252+94.9% | Added |
| CenterBook Partners LP | 41,438 | $5.26M | 0.26% | +41,438 | New |
| Barclays PLC | 40,321 | $5.12M | 0.00% | −8,873−18.0% | Reduced |
| SEI Investments Co | 40,313 | $5.12M | 0.00% | −44,692−52.6% | Reduced |
| Vanguard Asset Management, Ltd | 38,739 | $4.92M | 0.00% | +2,828+7.9% | Added |