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

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 Q3 2025 → Q4 2025

InstitutionsTotal Value
New Positions49$106.1M
Exits43$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
Diametric Capital, LP 0.37% Add +360.5% 35,029 $1.4M
New York State Teachers Retirement System 0.00% Add +212.1% 34,751 $1.4M
Teacher Retirement System of Texas 0.00% Reduce -29.8% 34,144 $1.3M
D. E. Shaw & Co. 0.00% Reduce -72.8% 30,839 $1.2M
James Investment Research, Inc. 0.13% Add +44.4% 29,612 $1.2M
FirstWave Capital Management LLC 0.69% — 29,491 $1.2M
Nomura Asset Management International Inc. 0.00% — 29,400 $1.2M
State of Alaska, Department of Revenue 0.01% Add +12.1% 28,980 $1.1M
Oakum Bay Capital LLC 0.59% — 28,798 $1.1M
MetLife Investment Management, LLC 0.01% Reduce -6.6% 28,640 $1.1M
Norges Bank 0.00% — 28,528 $1.1M
Illumine Investment Management, LLC 0.81% Reduce -10.6% 28,040 $1.1M
Allspring Global Investments Holdings, LLC 0.00% Reduce -22.1% 24,392 $1.1M
Advisory Research Inc. 0.14% Add +5.4% 27,324 $1.1M
Neuberger Berman Group LLC 0.00% Reduce -2.2% 27,076 $1.1M
Jefferies Financial Group Inc. 0.01% New 26,727 $1.1M
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management 0.02% Add +22.9% 26,124 $1.0M
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% Add +1.0% 25,118 $991K
Manufacturers Life Insurance Company, The 0.00% Reduce -7.2% 24,956 $985K
Intech Investment Management LLC 0.01% Add +3.1% 24,667 $973K
Louisiana State Employees Retirement System 0.02% New 24,400 $963K
Illinois Municipal Retirement Fund 0.01% New 24,155 $953K
Millennium Management 0.00% Reduce -88.8% 23,500 $927K
Wealth Enhancement Advisory Services, LLC 0.00% Add +6.2% 18,358 $925K
State of Tennessee, Department of Treasury 0.00% New 15,757 $916K
MML Investors Services, LLC 0.00% Add +1.0% 22,851 $901K
Belpointe Asset Management LLC 0.03% Reduce -11.4% 22,396 $884K
Fideuram Asset Management (Ireland) dac 0.07% — 30,975 $864K
Parallax Volatility Advisers, L.P. 0.03% Reduce -12.1% 20,937 $826K
Cwm, LLC 0.00% Reduce -0.7% 20,603 $813K
GMO 0.00% Add +9.1% 20,287 $800K
Susquehanna International Group, LLP 0.00% Reduce -83.2% 20,243 $799K
Voya Investment Management LLC 0.00% Add +120.8% 20,223 $798K
Federated Hermes, Inc. 0.00% Reduce -98.2% 19,051 $752K
Yousif Capital Management, LLC 0.01% Reduce -14.4% 14,216 $727K
Nkcfo LLC 0.21% New 18,000 $710K
Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% Add +117.4% 17,878 $705K
Vontobel Holding Ltd. 0.00% Reduce -21.2% 17,824 $703K
Spire Wealth Management 0.02% Add +0.1% 16,599 $655K
Cim, LLC 0.08% Reduce -5.5% 16,184 $638K
Handelsbanken Fonder AB 0.00% New 15,900 $627K
ProShare Advisors LLC 0.00% Reduce -0.6% 15,524 $612K
Amalgamated Bank 0.00% Reduce -0.6% 15,231 $601K
Odyssean, LLC 0.43% — 15,137 $597K
Arizona State Retirement System 0.00% Reduce -5.2% 14,835 $585K
Orion Porfolio Solutions, LLC 0.00% Reduce -4.4% 14,423 $569K
Osaic Holdings, Inc. 0.00% Add +96.9% 14,342 $566K
Bailard, Inc. 0.01% Reduce -14.0% 14,169 $559K
Beacon Financial Advisory LLC 0.13% No change 14,050 $554K
Police & Firemen's Retirement System of New Jersey 0.00% No change 13,974 $551K
Yorktown Management & Research Co Inc 0.42% No change 13,300 $525K
Commonwealth of Pennsylvania Public School Empls Retrmt SYS 0.00% Reduce -1.6% 13,188 $520K
Teachers Retirement System of the State of Kentucky 0.00% Reduce -9.3% 13,145 $518K
CoreCap Advisors, LLC 0.02% Reduce -22.1% 12,628 $498K
Oregon Public Employees Retirement Fund 0.01% Add +0.5% 12,160 $480K
State of Wisconsin Investment Board 0.00% Reduce -56.0% 12,157 $480K
Essex Investment Management Co. LLC 0.07% No change 11,770 $464K
Acadian Asset Management LLC 0.00% Add +1063.3% 11,679 $458K
Comerica Bank 0.00% Reduce -21.9% 11,492 $453K
KLP Kapitalforvaltning As 0.00% Add +5.6% 11,300 $446K
WCM Investment Management, LLC 0.00% New 10,960 $441K
Watershed Asset Management, L.L.C. 0.40% — 10,845 $428K
Freestone Grove Partners LP 0.00% New 10,153 $401K
Prudential PLC 0.00% New 10,113 $399K
Caprock Group, LLC 0.01% New 10,050 $396K
Seldon Capital LP 0.14% Reduce -94.8% 10,000 $395K
Amundi 0.00% New 9,833 $388K
Nomura Holdings Inc. 0.00% Reduce -93.2% 9,767 $385K
Pictet Asset Management Holding SA 0.00% Reduce -80.9% 9,725 $384K
Vident Advisory, LLC 0.00% New 9,712 $383K
AlphaQuest LLC 0.02% Add +13.0% 9,627 $380K
Pallas Capital Advisors LLC 0.01% Add +0.1% 9,599 $379K
First Growth Capital LLC 0.33% — 5,313 $376K
Creative Planning 0.00% Reduce -4.3% 9,299 $367K
Landscape Capital Management, L.L.C. 0.02% New 9,191 $363K
Prelude Capital Management, LLC 0.03% Add +25.9% 8,883 $350K
Fund Advisors of America Inc 0.31% — 8,604 $339K
Aberdeen Group plc 0.00% Reduce -24.3% 8,386 $331K
Leuthold Group, LLC 0.04% New 8,362 $330K
Mirae Asset Global Investments Co., Ltd. 0.00% Add +21.1% 8,288 $327K
Maryland State Retirement & Pension System 0.01% Add +2.2% 7,764 $306K
VARCOV Co. 0.12% — 7,758 $306K
OP Asset Management Ltd 0.00% New 7,390 $292K
Cetera Investment Advisers 0.00% Reduce -11.3% 7,175 $283K
Cambridge Investment Research Advisors, Inc. 0.00% Add +3.6% 7,176 $283K
Independent Advisor Alliance 0.01% Add +21.6% 7,051 $278K
STRS Ohio 0.00% No change 6,700 $264K
MIdWestOne Financial Group, Inc. 0.03% Reduce -6.9% 6,689 $264K
HUB Investment Partners, LLC 0.01% New 6,439 $254K
Chicago Partners Investment Group LLC 0.01% Add +0.0% 4,969 $248K
IFG Advisory, LLC 0.01% New 6,250 $247K
PDT Partners, LLC 0.02% Reduce -37.2% 6,241 $246K
Walleye Capital LLC 0.00% New 6,225 $246K
Mutual of America Capital Management LLC 0.00% Add +3.3% 6,089 $240K
Violich Capital Management, Inc. 0.03% No change 5,900 $233K
Blue Trust, Inc. 0.00% Reduce -4.4% 5,734 $226K
Man Group plc 0.00% New 5,307 $209K
Contravisory Investment Management, Inc. 0.04% New 5,101 $201K
Virtus Advisers, LLC 0.09% Reduce -83.8% 4,694 $185K
Ensign Peak Advisors, Inc 0.00% Reduce -60.4% 4,564 $180K
Ameritas Investment Partners, Inc. 0.01% No change 4,223 $167K
Palouse Capital Management, Inc. 0.10% Reduce -5.5% 3,715 $147K
Royal Bank of Canada 0.00% Reduce -92.9% 3,269 $128K
Essential Partners LLC 0.04% No change 3,052 $120K
Resona Asset Management Co.,Ltd. 0.00% Reduce -9.2% 2,905 $116K
Sterling Capital Management LLC 0.00% Reduce -16.4% 2,927 $115K
Tower Research Capital LLC (TRC) 0.00% Add +25.1% 2,898 $114K
Penserra Capital Management LLC 0.00% New 2,748 $108K
Truvestments Capital LLC 0.02% No change 2,313 $91K
Global Retirement Partners, LLC 0.00% Add +76500.0% 2,298 $91K
KBC Group NV 0.00% Add +85.3% 2,275 $90K
Erste Asset Management GmbH 0.00% New 2,250 $89K
Nisa Investment Advisors, LLC 0.00% Add +2.1% 1,950 $77K
Steward Partners Investment Advisory, LLC 0.00% No change 1,900 $75K
BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.00% Add +203.3% 1,383 $55K
PNC Financial Services Group, Inc. 0.00% Add +152.6% 1,379 $54K
GAMMA Investing LLC 0.00% Add +38.8% 1,070 $42K
Arax Advisory Partners 0.00% Reduce -90.2% 1,006 $40K
Nemes Rush Group LLC 0.00% No change 1,000 $39K
JTC Employer Solutions Trustee Ltd 0.00% No change 1,000 $39K
EverSource Wealth Advisors, LLC 0.00% Reduce -11.2% 945 $37K
SBI Securities Co., Ltd. 0.00% Reduce -0.6% 827 $33K
Jones Financial Companies LLLP 0.00% Add +2.5% 783 $31K
Leonteq Securities AG 0.00% No change 700 $28K
Hantz Financial Services, Inc. 0.00% Add +266.7% 660 $26K
Farther Finance Advisors, LLC 0.00% Add +90.1% 650 $26K
Advisors Asset Management, Inc. 0.00% Add +585.0% 548 $22K
Pinpoint Asset Management (Singapore) Pte. Ltd. 0.00% Add +47800.0% 479 $19K
University of Texas/Texas Am Investment Management Co. 0.00% New 449 $18K
Torren Management, LLC 0.01% — 424 $17K
Estate Planners Group, LLC 0.01% — 421 $17K
Smartleaf Asset Management LLC 0.00% Add +42.0% 402 $16K
Pinnacle Wealth Planning Services, Inc. 0.00% New 403 $16K
Salomon & Ludwin, LLC 0.00% Add +0.0% 305 $14K
Allworth Financial LP 0.00% Reduce -2.4% 332 $13K
IFP Advisors, Inc 0.00% No change 315 $12K
Huntington National Bank 0.00% No change 301 $12K
Bullock Wealth Management Group 0.01% — 279 $11K
Larson Financial Group LLC 0.00% Add +81.4% 254 $10K
Commonwealth Retirement Investments LLC 0.00% New 250 $10K
Harbor Investment Advisory, LLC 0.00% No change 250 $10K
McIlrath & Eck, LLC 0.00% No change 238 $9K
Cedar Mountain Advisors, LLC 0.00% Add +4.5% 230 $9K
NewEdge Advisors, LLC 0.00% No change 226 $9K
Mark Sheptoff Financial Planning, LLC 0.00% New 200 $8K
Golden State Wealth Management, LLC 0.00% No change 200 $8K
Parallel Advisors, LLC 0.00% Reduce -9.7% 195 $8K
National Bank of Canada 0.00% Reduce -27.3% 189 $7K
Rothschild Investment LLC 0.00% Add +1.7% 178 $7K
Los Angeles Capital Management LLC 0.00% New 161 $7K
Signaturefd, LLC 0.00% Add +34.5% 160 $6K
UMB Bank, n.a. 0.00% New 138 $5K
MCF Advisors LLC 0.00% No change 131 $5K
Quadrant Capital Group LLC 0.00% New 130 $5K
Sunbelt Securities, Inc. 0.00% New 120 $5K
Fifth Third Bancorp 0.00% New 98 $4K
Parkside Financial Bank & Trust 0.00% Add +70.6% 87 $3K
True Wealth Design, LLC 0.00% No change 70 $3K
Cornerstone Financial Management LLC 0.00% — 69 $3K
Armstrong Advisory Group, Inc. 0.00% No change 63 $2K
MassMutual Private Wealth & Trust, FSB 0.00% Add +222.2% 58 $2K
Medallion Wealth Advisors, LLC 0.00% No change 57 $2K
WealthCollab, LLC 0.00% Reduce -45.2% 51 $2K
CIBC Private Wealth Group LLC 0.00% Add +36.4% 45 $2K
Strategic Advocates LLC 0.00% No change 35 $1K
Kilter Group LLC 0.00% Reduce -30.6% 34 $1K
SageView Advisory Group, LLC 0.00% New 25 $987
Farmers & Merchants Investments Inc. 0.00% New 25 $986
MAI Capital Management 0.00% Add +110.0% 21 $829
Westside Investment Management, Inc. 0.00% New 13 $513
Keating Financial Advisory Services, Inc. 0.00% — 10 $395
DecisionPoint Financial, LLC 0.00% No change 5 $198
Ankerstar Wealth, LLC 0.00% — 5 $197
Rachor Investment Advisory Services, LLC 0.00% — 4 $158
Stone House Investment Management, LLC 0.00% New 4 $158
Abound Wealth Management 0.00% New 4 $158
Meramec Financial Planners, LLC 0.00% — 2 $125
Gilpin Wealth Management, LLC 0.00% — 3 $119
Covestor Ltd 0.00% Reduce -94.1% 4 $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.