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

0100200300400 Q1 2024: 200Q1 2024Q2 2024: 201Q2 2024Q3 2024: 185Q3 2024Q4 2024: 183Q4 2024Q1 2025: 244Q1 2025Q2 2025: 243Q2 2025Q3 2025: 258Q3 2025Q4 2025: 279Q4 2025Q1 2026: 301Q1 2026Q2 2026: 376Q2 2026

Total Exit/New Position Q2 2025 → Q3 2025

InstitutionsTotal Value
New Positions60$112.3M
Exits45$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
Wolverine Trading, LLC 0.02% Add +27.4% 29,275 $1.1M
JPMorgan Chase & Co. 0.00% Reduce -79.3% 28,688 $1.1M
FCG Investment Co 0.51% Reduce -22.8% 27,700 $1.1M
State of Wisconsin Investment Board 0.00% Add +29.8% 27,625 $1.1M
Neuberger Berman Group LLC 0.00% Add +1.5% 27,679 $1.1M
Manufacturers Life Insurance Company, The 0.00% Add +1.5% 26,891 $1.1M
Advisory Research Inc. 0.13% New 25,935 $1.0M
State of Alaska, Department of Revenue 0.01% New 25,856 $1.0M
Belpointe Asset Management LLC 0.04% New 25,272 $989K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% Reduce -14.5% 24,864 $973K
Citigroup Inc. 0.00% Reduce -89.8% 24,230 $948K
Dark Forest Capital Management LP 0.04% Add +60.6% 24,096 $943K
Intech Investment Management LLC 0.01% Reduce -34.5% 23,918 $936K
Parallax Volatility Advisers, L.P. 0.03% New 23,818 $932K
SG Americas Securities, LLC 0.00% New 22,637 $886K
MML Investors Services, LLC 0.00% Add +20.9% 22,634 $886K
Vontobel Holding Ltd. 0.00% Add +10.0% 22,610 $885K
Sei Investments Co. 0.00% Reduce -21.1% 22,086 $864K
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management 0.02% New 21,248 $831K
Cwm, LLC 0.00% Reduce -2.4% 20,755 $812K
Picton Mahoney Asset Management 0.01% New 20,542 $804K
James Investment Research, Inc. 0.09% Add +27.4% 20,511 $803K
RBF Capital, LLC 0.04% No change 20,000 $783K
GMO 0.00% New 18,601 $728K
Macquarie Group Ltd. 0.00% New 18,100 $708K
Wealth Enhancement Advisory Services, LLC 0.00% Add +2.0% 17,291 $700K
Verition Fund Management LLC 0.00% Reduce -26.5% 17,400 $681K
Cim, LLC 0.09% Reduce -0.1% 17,125 $670K
Yousif Capital Management, LLC 0.01% New 16,600 $650K
Spire Wealth Management 0.02% Reduce -4.9% 16,581 $649K
Bailard, Inc. 0.01% Reduce -4.8% 16,469 $644K
CoreCap Advisors, LLC 0.02% Add +1323.8% 16,203 $634K
New York State Common Retirement Fund 0.00% No change 15,813 $619K
Cynosure Group, LLC 0.07% No change 15,797 $618K
Arizona State Retirement System 0.00% Add +2.5% 15,649 $612K
ProShare Advisors LLC 0.00% Reduce -4.7% 15,624 $611K
Amalgamated Bank 0.00% Add +763.4% 15,325 $600K
Orion Porfolio Solutions, LLC 0.00% Add +0.1% 15,080 $590K
Comerica Bank 0.00% Add +113076.9% 14,713 $576K
Teachers Retirement System of the State of Kentucky 0.00% New 14,500 $568K
Danske Bank A/S 0.00% Reduce -54.2% 14,249 $558K
Beacon Financial Advisory LLC 0.13% Add +0.1% 14,050 $550K
Police & Firemen's Retirement System of New Jersey 0.00% Add +24.0% 13,974 $547K
Eschler Asset Management LLP 0.40% New 13,904 $544K
Private Advisor Group, LLC 0.00% Reduce -0.5% 13,543 $530K
Commonwealth of Pennsylvania Public School Empls Retrmt SYS 0.00% New 13,409 $525K
Yorktown Management & Research Co Inc 0.41% No change 13,300 $520K
Guggenheim Capital LLC 0.00% Reduce -4.7% 13,027 $510K
AXA Investment Managers S.A. 0.00% — 12,576 $492K
Oregon Public Employees Retirement Fund 0.01% New 12,100 $473K
Essex Investment Management Co. LLC 0.07% Reduce -11.0% 11,770 $461K
Ensign Peak Advisors, Inc 0.00% Reduce -42.6% 11,514 $451K
Gsa Capital Partners LLP 0.04% New 11,423 $447K
Martingale Asset Management L P 0.01% Reduce -1.8% 11,242 $440K
Aberdeen Group plc 0.00% Add +0.9% 11,078 $438K
New York State Teachers Retirement System 0.00% Add +5760.5% 11,135 $436K
Marex Group Ltd 0.01% New 10,869 $425K
KLP Kapitalforvaltning As 0.00% No change 10,700 $419K
Arax Advisory Partners 0.01% New 10,241 $401K
Cornerstone Investment Partners, LLC 0.02% Reduce -6.9% 10,170 $398K
PDT Partners, LLC 0.02% Reduce -0.0% 9,941 $389K
Entropy Technologies, LP 0.03% New 9,880 $387K
Creative Planning 0.00% Add +19.0% 9,722 $380K
Pallas Capital Advisors LLC 0.01% Reduce -0.2% 9,591 $375K
Voya Investment Management LLC 0.00% Reduce -34.0% 9,161 $358K
XTX Topco Ltd 0.02% New 9,116 $357K
Apollon Wealth Management, LLC 0.01% New 9,025 $353K
DRW Securities, LLC 0.02% New 8,946 $351K
AlphaQuest LLC 0.02% Reduce -58.4% 8,517 $333K
Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% No change 8,225 $322K
Cetera Investment Advisers 0.00% New 8,086 $316K
Savvy Advisors, Inc. 0.01% New 7,943 $311K
Diametric Capital, LP 0.11% Reduce -20.9% 7,606 $298K
Maryland State Retirement & Pension System 0.01% New 7,596 $297K
Perigon Wealth Management, LLC 0.01% Reduce -26.1% 7,402 $290K
MIdWestOne Financial Group, Inc. 0.03% New 7,188 $281K
Mariner, LLC 0.00% Reduce -32.4% 7,167 $280K
Prelude Capital Management, LLC 0.02% New 7,056 $276K
Cambridge Investment Research Advisors, Inc. 0.00% New 6,927 $271K
Mirae Asset Global Investments Co., Ltd. 0.00% Add +36.8% 6,841 $268K
Caxton Associates LLP 0.01% New 6,738 $264K
STRS Ohio 0.00% No change 6,700 $262K
Osaic Holdings, Inc. 0.00% Reduce -7.5% 7,283 $241K
Numerai GP LLC 0.03% New 6,114 $239K
Blue Trust, Inc. 0.00% Add +8.1% 5,997 $235K
Violich Capital Management, Inc. 0.03% New 5,900 $231K
Mutual of America Capital Management LLC 0.00% New 5,896 $231K
Independent Advisor Alliance 0.01% Reduce -27.5% 5,797 $227K
Zacks Investment Management 0.00% New 5,756 $225K
Commonwealth Equity Services, LLC 0.00% New 5,575 $218K
Aquatic Capital Management LLC 0.00% Reduce -90.7% 5,539 $217K
CIBC Bancorp USA Inc. 0.00% — 5,388 $211K
Chicago Partners Investment Group LLC 0.01% New 4,967 $201K
Ameritas Investment Partners, Inc. 0.01% Reduce -18.9% 4,223 $165K
Palouse Capital Management, Inc. 0.10% Reduce -23.1% 3,931 $154K
Sterling Capital Management LLC 0.00% Add +156.4% 3,500 $137K
Resona Asset Management Co.,Ltd. 0.00% Reduce -58.6% 3,200 $124K
Essential Partners LLC 0.04% No change 3,052 $119K
Tower Research Capital LLC (TRC) 0.00% Reduce -61.9% 2,316 $91K
Truvestments Capital LLC 0.02% No change 2,313 $91K
Nisa Investment Advisors, LLC 0.00% Add +0.9% 1,910 $75K
Steward Partners Investment Advisory, LLC 0.00% No change 1,900 $74K
KBC Group NV 0.00% No change 1,228 $48K
EverSource Wealth Advisors, LLC 0.00% Reduce -17.7% 1,064 $42K
Nemes Rush Group LLC 0.00% No change 1,000 $39K
JTC Employer Solutions Trustee Ltd 0.00% No change 1,000 $39K
Acadian Asset Management LLC 0.00% Reduce -95.6% 1,004 $39K
SBI Securities Co., Ltd. 0.00% Add +78.9% 832 $33K
GAMMA Investing LLC 0.00% Add +17.4% 771 $30K
Jones Financial Companies LLLP 0.00% Add +206.8% 764 $29K
Leonteq Securities AG 0.00% Reduce -73.3% 700 $27K
PNC Financial Services Group, Inc. 0.00% Add +26.4% 546 $21K
BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.00% No change 456 $18K
Farther Finance Advisors, LLC 0.00% Add +643.5% 342 $13K
Allworth Financial LP 0.00% Add +2.4% 340 $13K
IFP Advisors, Inc 0.00% Add +3.3% 315 $12K
Huntington National Bank 0.00% No change 301 $12K
Quantbot Technologies LP 0.00% New 280 $11K
Smartleaf Asset Management LLC 0.00% Reduce -4.1% 283 $11K
National Bank of Canada 0.00% Reduce -14.8% 260 $10K
Harbor Investment Advisory, LLC 0.00% No change 250 $10K
McIlrath & Eck, LLC 0.00% No change 238 $9K
NewEdge Advisors, LLC 0.00% No change 226 $9K
Cedar Mountain Advisors, LLC 0.00% No change 220 $9K
Parallel Advisors, LLC 0.00% No change 216 $8K
Golden State Wealth Management, LLC 0.00% No change 200 $8K
Hantz Financial Services, Inc. 0.00% New 180 $7K
Rothschild Investment LLC 0.00% Add +84.2% 175 $7K
Optiver Holding B.V. 0.00% Reduce -44.1% 170 $7K
Larson Financial Group LLC 0.00% Add +28.4% 140 $5K
MCF Advisors LLC 0.00% Add +45.6% 131 $5K
Bessemer Group Inc. 0.00% No change 125 $5K
Binnacle Investments Inc 0.00% Reduce -0.8% 122 $5K
Signaturefd, LLC 0.00% No change 119 $5K
Wealthspire Advisors, LLC 0.00% New 100 $4K
WealthCollab, LLC 0.00% Add +82.3% 93 $4K
Advisors Asset Management, Inc. 0.00% Reduce -14.0% 80 $3K
Covestor Ltd 0.00% Add +1600.0% 68 $3K
True Wealth Design, LLC 0.00% No change 70 $3K
Armstrong Advisory Group, Inc. 0.00% New 63 $2K
Medallion Wealth Advisors, LLC 0.00% No change 57 $2K
Rise Advisors, LLC 0.00% No change 52 $2K
Parkside Financial Bank & Trust 0.00% Add +45.7% 51 $2K
Salem Investment Counselors Inc. 0.00% No change 50 $2K
Kilter Group LLC 0.00% New 49 $2K
Advisory Services Network, LLC 0.00% New 41 $2K
Principal Securities, Inc. 0.00% No change 41 $2K
Strategic Advocates LLC 0.00% New 35 $1K
Guerra Advisors Inc 0.00% New 34 $1K
CIBC Private Wealth Group LLC 0.00% No change 33 $1K
MassMutual Private Wealth & Trust, FSB 0.00% No change 18 $704
Turning Point Benefit Group, Inc. 0.00% New 9 $394
MAI Capital Management 0.00% No change 10 $392
DecisionPoint Financial, LLC 0.00% No change 5 $219
Global Retirement Partners, LLC 0.00% Reduce -98.5% 3 $117
Clearstead Advisors, LLC 0.00% Reduce -93.8% 1 $40
Pinpoint Asset Management (Singapore) Pte. Ltd. 0.00% No change 1 $39
FNY Investment Advisers, LLC 0.00% New 14 $0

"% 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.