NASDAQ: ACMR
Acm Research Inc Stock Ownership - Who owns Acm Research?

Insider buying vs selling

Have Acm Research Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Haiping DunDirector2026-05-195,000$5.60
$28.00kBuy
Haiping DunDirector2026-05-191,333$63.84
$85.10kSell
Haiping DunDirector2026-05-19500$65.09
$32.55kSell
Haiping DunDirector2026-05-191,309$67.21
$87.98kSell
Haiping DunDirector2026-05-191,858$67.54
$125.49kSell
Charles C. PappisDirector2026-04-175,000$29.18
$145.90kBuy
Charles C. PappisDirector2026-04-175,000$52.00
$260.00kSell
Mark McKechnieChief Financial Officer and Treasurer2026-03-1211,910$44.89
$534.64kSell
Mark McKechnieChief Financial Officer and Treasurer2026-03-1247,108$45.74
$2.15MSell
Mark McKechnieChief Financial Officer and Treasurer2026-03-12982$46.55
$45.71kSell

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Net Insider Buy/Sell (L12M) Ownership

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ACMR Shareholders

What type of owners hold Acm Research Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Shanghai Science Technology Venture Capital Group Co Ltd13.67%9,055,966$648.32MInsider
Blackrock Inc12.06%7,984,847$571.64MInstitution
Xiao Xing3.53%2,338,510$167.41MInsider
Vanguard Capital Management LLC3.42%2,264,337$162.10MInstitution
Vanguard Portfolio Management LLC3.33%2,203,831$157.77MInstitution
State Street Corp3.03%2,006,116$143.62MInstitution
Wcm Investment Management LLC2.81%1,860,874$133.22MInstitution
David H. Wang2.64%1,748,548$125.18MInsider
Geode Capital Management LLC2.07%1,371,227$98.17MInstitution
Morgan Stanley1.80%1,192,705$85.39MInstitution

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ACMR vs Semiconductor Equipment Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
ACMR67.04%25.62%Net BuyingNet Buying
ACLS91.81%8.19%Net SellingNet Selling
IPGP29.62%70.38%Net SellingNet Selling
KLIC83.26%16.74%Net SellingNet Selling
AMBA71.35%28.65%Net SellingNet Selling

Acm Research Stock Ownership FAQ

Who owns Acm Research?

Acm Research (NASDAQ: ACMR) is owned by 67.04% institutional shareholders, 25.62% Acm Research insiders, and 7.35% retail investors. Shanghai Science Technology Venture Capital Group Co Ltd is the largest individual Acm Research shareholder, owning 9.06M shares representing 13.67% of the company. Shanghai Science Technology Venture Capital Group Co Ltd's Acm Research shares are currently valued at $648.32M.

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