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Livermore
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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
Inceptionr LLC6,203$244.1K0.06%+6,203New
Chicago Partners Investment Group LLC4,576$249.5K0.01%−393−7.9%Reduced
Mirae Asset Global Investments Co., Ltd.6,344$249.6K0.00%−1,944−23.5%Reduced
Cornerstone Investment Partners, LLC6,391$251.5K0.01%+6,391New
Ieq Capital, LLC6,821$268.4K0.00%+6,821New
Independent Advisor Alliance7,007$275.7K0.00%−44−0.6%Reduced
Fund Advisors of America Inc7,114$279.9K0.28%−1,490−17.3%Reduced
Prudential PLC7,136$280.8K0.00%−2,977−29.4%Reduced
CoreCap Advisors, LLC7,212$283.8K0.01%−5,416−42.9%Reduced
Vident Advisory, LLC7,229$284.5K0.00%−2,483−25.6%Reduced
Advisor Group Holdings, Inc.7,282$286.5K0.00%−7,060−49.2%Reduced
Pekin Hardy Strauss, Inc.7,500$295.1K0.03%+7,500New
Beacon Pointe Advisors, LLC7,666$301.7K0.00%+7,666New
Maryland State Retirement & Pension System7,764$305.5K0.01%00.0%Unchanged
Headlands Technologies LLC7,773$305.9K0.03%+7,773New
Leuthold Group, LLC8,120$319.5K0.03%−242−2.9%Reduced
Prelude Capital Management, LLC8,396$330.4K0.03%−487−5.5%Reduced
Diametric Capital, LP8,555$336.6K0.09%−26,474−75.6%Reduced
Summit Global Investments8,592$338.0K0.02%+8,592New
Storgate, LLC8,628$339.5K0.27%+8,628New
Cetera Investment Advisers8,796$346.1K0.00%+1,621+22.6%Added
Pallas Capital Advisors LLC9,169$360.8K0.01%−430−4.5%Reduced
Pictet Asset Management Holding SA9,725$382.7K0.00%00.0%Unchanged
Numerai GP LLC10,073$396.4K0.04%+10,073New
Allstate Corp10,146$399.2K0.00%+10,146New
Dynamic Technology Lab Private Ltd10,148$399.3K0.07%+10,148New
Grantham, Mayo, Van Otterloo & Co. LLC10,181$400.6K0.00%−10,106−49.8%Reduced
Fifth Third Bancorp11,414$449.2K0.00%+11,316+11,546.9%Added
Essex Investment Management Co LLC11,770$463.1K0.07%00.0%Unchanged
KLP Kapitalforvaltning AS11,900$468.3K0.00%+600+5.3%Added
Federated Hermes, Inc.12,072$475.0K0.00%−6,979−36.6%Reduced
Oregon Public Employees Retirement Fund12,177$479.2K0.01%+17+0.1%Added
Creative Planning12,457$490.2K0.00%+3,158+34.0%Added
Intech Investment Management LLC12,513$492.4K0.00%−12,154−49.3%Reduced
FCG Investment Co12,531$493.1K0.22%+12,531New
Bailard, Inc.12,569$494.6K0.01%−1,600−11.3%Reduced
Vanguard Investments Australia, Ltd.12,810$504.1K0.00%+12,810New
Oberweis Asset Management Inc13,000$511.6K0.02%+13,000New
Teachers Retirement System of the State of Kentucky13,145$517.0K0.00%00.0%Unchanged
Commonwealth of Pennsylvania Public School Empls Retrmt Sys13,174$518.4K0.00%−14−0.1%Reduced
Yorktown Management & Research Co Inc13,300$523.4K0.44%00.0%Unchanged
ProShare Advisors LLC13,675$538.1K0.00%−1,849−11.9%Reduced
Police & Firemen's Retirement System of New Jersey13,974$549.9K0.00%00.0%Unchanged
Beacon Financial Advisory LLC14,055$553.1K0.12%+50.0%Added
Vontobel Holding Ltd.14,143$556.5K0.00%−3,681−20.7%Reduced
Yousif Capital Management, LLC14,152$556.9K0.01%−64−0.5%Reduced
Harvest Investment Services, LLC14,182$558.1K0.10%+14,182New
Cim, LLC14,749$580.4K0.08%−1,435−8.9%Reduced
Arizona State Retirement System14,796$582.2K0.00%−39−0.3%Reduced
Brinker Capital Investments, LLC15,056$592.5K0.01%+633+4.4%Added
Odyssean, LLC15,137$595.6K0.22%00.0%Unchanged
Allspring Global Investments Holdings, LLC14,815$599.4K0.00%−9,577−39.3%Reduced
Amalgamated Bank15,253$600.0K0.00%+22+0.1%Added
STRS Ohio15,500$609.9K0.00%+8,800+131.3%Added
State of Tennessee, Treasury Department15,757$620.0K0.00%00.0%Unchanged
Cypress Capital Group15,820$622.5K0.07%+15,820New
Handelsbanken Fonder AB15,900$626.0K0.00%00.0%Unchanged
Spire Wealth Management16,296$641.2K0.02%−303−1.8%Reduced
Nomura Asset Management International Inc.16,800$661.0K0.00%−12,600−42.9%Reduced
Voya Investment Management LLC16,952$667.1K0.00%−3,271−16.2%Reduced
Mirabella Financial Services LLP17,105$673.1K0.07%+17,105New
Virtu Financial LLC17,244$679.0K0.03%+17,244New
Magnetar Financial LLC18,303$720.2K0.01%+18,303New
Brevan Howard Capital Management LP19,499$767.3K0.01%+19,499New
Guggenheim Capital LLC19,962$785.5K0.01%−34,609−63.4%Reduced
Blackstone Group Inc.20,241$796.5K0.00%+20,241New
Aperture Investors, LLC20,484$806.0K0.10%+20,484New
CWM, LLC20,566$809.3K0.00%−37−0.2%Reduced
Catalyst Funds Management Pty Ltd21,300$838.2K0.14%+21,300New
SG Americas Securities, LLC21,351$840.0K0.00%−208,130−90.7%Reduced
Illumine Investment Management, LLC21,916$862.4K0.66%−6,124−21.8%Reduced
MML Investors Services, LLC22,067$868.3K0.00%−784−3.4%Reduced
Raymond James Financial Inc22,200$873.6K0.00%−18,031−44.8%Reduced
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management23,427$921.9K0.02%−2,697−10.3%Reduced
Zurcher Kantonalbank (Zurich Cantonalbank)23,525$925.7K0.00%+5,647+31.6%Added
Louisiana State Employees Retirement System23,600$928.7K0.02%−800−3.3%Reduced
Simplex Trading, LLC24,464$962.7K0.03%−86,488−78.0%Reduced
Manufacturers Life Insurance Company, The24,785$975.3K0.00%−171−0.7%Reduced
Neuberger Berman Group LLC25,316$982.9K0.00%−1,760−6.5%Reduced
Vanguard Global Advisers, LLC25,883$1.02M0.00%+25,883New
Mirae Asset Global ETFs Holdings Ltd.25,918$1.02M0.00%+800+3.2%Added
Gordian Capital Singapore Pte Ltd26,000$1.02M1.72%+26,000New
Public Employees Retirement System of Ohio26,055$1.03M0.00%+26,055New
Wealth Enhancement Advisory Services, LLC59,174$1.04M0.00%+40,816+222.3%Added
Gsa Capital Partners LLP26,759$1.05M0.07%+26,759New
Cerity Partners LLC27,538$1.08M0.00%−240,799−89.7%Reduced
MetLife Investment Management27,854$1.10M0.01%−786−2.7%Reduced
State of Alaska, Department of Revenue28,153$1.11M0.01%−827−2.9%Reduced
Advisory Research Inc28,299$1.11M0.14%+975+3.6%Added
James Investment Research Inc29,650$1.17M0.13%+38+0.1%Added
Capelight Capital Asset Management LP30,000$1.18M0.98%−20,000−40.0%Reduced
Illinois Municipal Retirement Fund31,532$1.24M0.02%+7,377+30.5%Added
New York State Teachers Retirement System33,740$1.33M0.00%−1,011−2.9%Reduced
Oakum Bay Capital LLC34,398$1.35M0.73%+5,600+19.4%Added
NorthCrest Asset Manangement, LLC33,402$1.35M0.04%−178−0.5%Reduced
State of New Jersey Common Pension Fund D34,414$1.35M0.01%+34,414New
State of Wisconsin Investment Board34,700$1.37M0.00%+22,543+185.4%Added
Thrivent Financial for Lutherans35,558$1.40M0.00%−1,046−2.9%Reduced
Vanguard Asset Management, Ltd35,911$1.41M0.00%+35,911New