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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

ACMR

ACM Research, Inc.

Superinvestors

Institutional investors holding ACMR

Consensus →
InvestorFundWeightSharesValueQuarter
Mason HawkinsLongleaf Partners – Southeastern Asset Management1.52%782,900$30.8M2026Q1
Kenneth FisherFisher Asset Management0.04%244,200$5.4M2003Q3
Dodge & CoxDodge & Cox0.00%119,892$4.7M2026Q1

Congressional Activity

Congressional data coming soon

Insider Activity

35

Total trades

$14.5M

Volume

1

Buys

26

Sells

Last trade: Jun 4, 2026

Insider Tradeslast 90 days

DateInsiderTypeValue
Jun 4, 2026Sotheara CheavSell$109K
Jun 4, 2026Sotheara CheavSell$784K

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.

Jun 4, 2026
Sotheara Cheav
Sell
$244K
Jun 4, 2026Sotheara CheavSell$195K
Jun 4, 2026Sotheara CheavSell$80K
Jun 4, 2026Sotheara CheavSell$34K
Jun 4, 2026Sotheara CheavSell$141K
Jun 4, 2026Sotheara CheavOption$185K
Jun 4, 2026Sotheara CheavOption$75K
Jun 3, 2026Sotheara CheavSell$377K
Jun 3, 2026Sotheara CheavSell$560K
Jun 3, 2026Sotheara CheavSell$2.9M
Jun 3, 2026Sotheara CheavSell$901K
Jun 3, 2026Sotheara CheavSell$540K
Jun 3, 2026Sotheara CheavSell$110K
Jun 3, 2026Sotheara CheavSell$173K
Jun 3, 2026Sotheara CheavSell$1.5M
Jun 3, 2026Sotheara CheavSell$946K
Jun 3, 2026Sotheara CheavSell$748K
Jun 3, 2026Sotheara CheavSell$73K
Jun 3, 2026Sotheara CheavOption$60K
Jun 3, 2026Sotheara CheavOption$40K
May 19, 2026Sotheara CheavSell$85K
May 19, 2026Sotheara CheavSell$33K
May 19, 2026Sotheara CheavSell$88K
May 19, 2026Sotheara CheavSell$125K
May 19, 2026Sotheara CheavOption$28K