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Livermore
Livermore
ZHEN

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 $6.11B in total; 3 superinvestors hold it, including Southeastern Asset Management (Longleaf) and Soros Fund Management.

13F holders, Q1 2026

Institutional positions in ACM Research, Inc. as of Mar 31, 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
301
+29 vs. Q4 2025
Shares held
44.4M
+4.22M (+10.5%) vs. Q4 2025
Total value
$1.74B
+$157.8M (+9.9%) vs. Q4 2025
New holders
73
82 more added
Sold out
44
105 more reduced

7 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: 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.

Institutional holdersQ1 2026: 301 institutions
Q1 2021: 94 institutionsQ2 2021: 94 institutionsQ3 2021: 96 institutionsQ4 2021: 100 institutionsQ1 2022: 96 institutionsQ2 2022: 98 institutionsQ3 2022: 117 institutionsQ4 2022: 123 institutionsQ1 2023: 130 institutionsQ2 2023: 122 institutionsQ3 2023: 154 institutionsQ4 2023: 156 institutionsQ1 2024: 200 institutionsQ2 2024: 201 institutionsQ3 2024: 185 institutionsQ4 2024: 183 institutionsQ1 2025: 244 institutionsQ2 2025: 243 institutionsQ3 2025: 260 institutionsQ4 2025: 279 institutionsQ1 2026: 301 institutionsQ2 2026: 377 institutions
Value heldQ1 2026: $1.74B
Q1 2021: $586.5MQ2 2021: $753.5MQ3 2021: $979.6MQ4 2021: $747.5MQ1 2022: $606.7MQ2 2022: $607.2MQ3 2022: $434.9MQ4 2022: $235.2MQ1 2023: $343.6MQ2 2023: $382.7MQ3 2023: $562.8MQ4 2023: $642.8MQ1 2024: $956.1MQ2 2024: $774.0MQ3 2024: $656.9MQ4 2024: $539.4MQ1 2025: $838.6MQ2 2025: $969.2MQ3 2025: $1.63BQ4 2025: $1.79BQ1 2026: $1.74BQ2 2026: $6.11B
Institutions holding ACMR and their total value by quarter
QuarterHoldersValue
Q2 2026377$6.11B
Q1 2026301$1.74B
Q4 2025279$1.79B
Q3 2025260$1.63B
Q2 2025243$969.2M
Q1 2025244$838.6M
Q4 2024183$539.4M
Q3 2024185$656.9M
Q2 2024201$774.0M
Q1 2024200$956.1M
Q4 2023156$642.8M
Q3 2023154$562.8M
Q2 2023122$382.7M
Q1 2023130$343.6M
Q4 2022123$235.2M
Q3 2022117$434.9M
Q2 202298$607.2M
Q1 202296$606.7M
Q4 2021100$747.5M
Q3 202196$979.6M
Q2 202194$753.5M
Q1 202194$586.5M

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding ACM Research, Inc.; share changes are against Q4 2025.

Institutions holding ACMR in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Larson Financial Group LLC6,144$241.8K0.01%+5,890+2,318.9%Added
12 West Capital Management LP6,100$240.0K0.04%+6,100New
Mutual of America Capital Management LLC6,096$239.9K0.00%+7+0.1%Added
First Growth Capital LLC5,598$226.5K0.21%+285+5.4%Added
CAPROCK Group, Inc.5,742$225.9K0.01%−4,308−42.9%Reduced
Marshall Wace, LLP5,727$225.4K0.00%+5,727New
Nomura Holdings Inc5,521$217.3K0.00%−4,246−43.5%Reduced
Violich Capital Management, Inc.5,350$210.5K0.02%−550−9.3%Reduced
Nicolet Bankshares Inc5,272$207.5K0.01%+5,272New
Ronald Blue Trust, Inc.5,150$202.6K0.00%−584−10.2%Reduced
Keebeck Alpha, LP5,138$202.2K0.62%+5,138New
Contravisory Investment Management, Inc.5,101$200.7K0.04%00.0%Unchanged
Ensign Peak Advisors, Inc4,564$179.6K0.00%00.0%Unchanged
Ameritas Investment Partners, Inc.4,223$166.2K0.01%00.0%Unchanged
Royal Bank of Canada4,118$162.0K0.00%+849+26.0%Added
Tower Research Capital LLC (TRC)3,725$146.6K0.00%+827+28.5%Added
Caitong International Asset Management Co., Ltd3,527$138.8K0.03%+3,527New
Palouse Capital Management, Inc.3,218$126.6K0.08%−497−13.4%Reduced
Essential Partners LLC3,052$120.1K0.04%00.0%Unchanged
Virtus ETF Advisers LLC2,922$115.0K0.05%−1,772−37.8%Reduced
Resona Asset Management Co.,Ltd.2,785$105.6K0.00%−120−4.1%Reduced
Truvestments Capital LLC2,313$91.0K0.02%00.0%Unchanged
Harel Insurance Investments & Financial Services Ltd.2,040$80.0K0.00%+2,040New
Nisa Investment Advisors, LLC2,024$79.6K0.00%+74+3.8%Added
Steward Partners Investment Advisory, LLC1,900$74.8K0.00%00.0%Unchanged
Advisors Asset Management, Inc.1,863$73.3K0.00%+1,315+240.0%Added
Jones Financial Companies LLLP1,713$68.6K0.00%+930+118.8%Added
Sterling Capital Management LLC1,703$67.0K0.00%−1,224−41.8%Reduced
KBC Group NV1,698$67.0K0.00%−577−25.4%Reduced
The PNC Financial Services Group, Inc.1,362$53.6K0.00%−17−1.2%Reduced
GAMMA Investing LLC1,258$49.5K0.00%+188+17.6%Added
Hantz Financial Services, Inc.1,231$48.0K0.00%+571+86.5%Added
GWM Advisors LLC1,087$42.8K0.00%+861+381.0%Added
EverSource Wealth Advisors, LLC1,019$40.1K0.00%+74+7.8%Added
Nemes Rush Group LLC1,000$39.4K0.00%00.0%Unchanged
JTC Employer Solutions Trusteee Ltd1,000$39.0K0.00%00.0%Unchanged
SBI Securities Co., Ltd.930$36.6K0.00%+103+12.5%Added
BNP PARIBAS ASSET MANAGEMENT Holding S.A.913$35.9K0.00%−470−34.0%Reduced
Walleye Capital LLC871$34.3K0.00%−5,354−86.0%Reduced
Bank of New Hampshire716$28.2K0.01%+716New
Quadrant Capital Group LLC569$22.4K0.00%+439+337.7%Added
Farther Finance Advisors, LLC543$22.0K0.00%−107−16.5%Reduced
IFP Advisors, Inc465$18.3K0.00%+150+47.6%Added
Pinnacle Wealth Planning Services, Inc.449$17.7K0.00%+46+11.4%Added
Kemnay Advisory Services Inc.423$16.6K0.00%+423New
Harbour Investments, Inc.401$15.8K0.00%+401New
NBC Securities, Inc.400$15.7K0.00%+400New
Huntington National Bank301$11.8K0.00%00.0%Unchanged
Bullock Wealth Management Group279$11.3K0.01%00.0%Unchanged
Salomon & Ludwin, LLC277$11.2K0.00%−28−9.2%Reduced
Federation des caisses Desjardins du Quebec285$11.2K0.00%+285New
Mark Sheptoff Financial Planning, LLC200$10.6K0.01%00.0%Unchanged
Harbor Investment Advisory, LLC250$9.84K0.00%00.0%Unchanged
Allworth Financial LP249$9.80K0.00%−83−25.0%Reduced
McIlrath & Eck, LLC238$9.37K0.00%00.0%Unchanged
Cedar Mountain Advisors, LLC230$9.05K0.00%00.0%Unchanged
University of Texas/Texas Am Investment Managment Co224$8.81K0.00%−225−50.1%Reduced
Parallel Advisors, LLC195$7.67K0.00%00.0%Unchanged
SRS Capital Advisors, Inc.89$7.53K0.00%−917−91.2%Reduced
Rothschild Investment LLC180$7.08K0.00%+2+1.1%Added
Los Angeles Capital Management LLC161$6.33K0.00%00.0%Unchanged
Signaturefd, LLC160$6.30K0.00%00.0%Unchanged
Umb Bank N A156$6.14K0.00%+18+13.0%Added
MCF Advisors LLC131$5.16K0.00%00.0%Unchanged
Smartleaf Asset Management LLC135$5.12K0.00%−267−66.4%Reduced
Sunbelt Securities, Inc.120$4.72K0.00%00.0%Unchanged
Golden State Wealth Management, LLC100$3.94K0.00%−100−50.0%Reduced
Parkside Financial Bank & Trust89$3.50K0.00%+2+2.3%Added
Massmutual Trust Co FSB87$3.42K0.00%+29+50.0%Added
Optiver Holding B.V.85$3.35K0.00%+85New
Golden State Equity Partners82$3.23K0.00%+82New
True Wealth Design, LLC70$2.75K0.00%00.0%Unchanged
US Bancorp70$2.75K0.00%+70New
Cornerstone Financial Management LLC69$2.71K0.00%00.0%Unchanged
Armstrong Advisory Group, Inc63$2.48K0.00%00.0%Unchanged
Medallion Wealth Advisors, LLC57$2.24K0.00%00.0%Unchanged
Whittier Trust Co50$2.08K0.00%+50New
WealthCollab, LLC51$2.01K0.00%00.0%Unchanged
Salem Investment Counselors Inc50$1.97K0.00%+50New
Advisory Services Network, LLC41$1.61K0.00%+41New
Versant Capital Management, Inc40$1.57K0.00%+40New
Bare Financial Services, Inc39$1.53K0.00%+39New
Rockefeller Capital Management L.P.36$1.42K0.00%+36New
Owl Creek Wealth Partners LLC35$1.38K0.00%+35New
Kilter Group LLC34$1.34K0.00%00.0%Unchanged
MAI Capital Management31$1.22K0.00%+10+47.6%Added
Keating Financial Advisory Services, Inc.28$1.10K0.00%+18+180.0%Added
Farmers & Merchants Investments Inc25$9840.00%00.0%Unchanged
Westside Investment Management, Inc.13$5120.00%00.0%Unchanged
Rachor Investment Advisory Services, LLC11$4330.00%+7+175.0%Added
Twin Peaks Wealth Advisors, LLC11$4330.00%+11New
Gilpin Wealth Management, LLC9$3550.00%+6+200.0%Added
Fortitude Family Office, LLC6$2360.00%+6New
DecisionPoint Financial, LLC5$1970.00%00.0%Unchanged
Ankerstar Wealth, LLC5$1970.00%00.0%Unchanged
Stone House Investment Management, LLC5$1970.00%+1+25.0%Added
Abound Wealth Management5$1970.00%+1+25.0%Added
Meramec Financial Planners, LLC2$1000.00%00.0%Unchanged
GHP Investment Advisors, Inc.1$400.00%+1New
Pinpoint Asset Management (Singapore) Pte. Ltd.1$390.00%−478−99.8%Reduced