ACM Research, Inc. ACMR

Set alert

39.31 USD -5.12 (-11.52%)

At closeNov 5, 2026, 5:31 PM EST

39.15 -0.16 -0.41%

After hours · Nov 5, 5:31 PM ET

37.47 Day range 44.47

28.46 52-week range 127.19

Held by insiders 3.86%

Held by institutions 77.91%

Float held by institutions 81.05%

Institutions 511

Top institutional holders
Holder	% held	Shares	Value	Reported
Blackrock Inc.	13.39%	8,660,842	340.63M	Jun 29, 2026
Vanguard Portfolio Management LLC	5.18%	3,349,436	131.73M	Jun 29, 2026
Vanguard Capital Management LLC	3.81%	2,462,745	96.86M	Jun 29, 2026
Capital World Investors	3.71%	2,398,036	94.31M	Jun 29, 2026
State Street Corporation	3.38%	2,188,254	86.06M	Jun 29, 2026
Geode Capital Management, LLC	2.30%	1,487,797	58.52M	Jun 29, 2026

Top mutual fund holders
Holder	% held	Shares	Value	Reported
iShares Trust-iShares Core S&P Small-Cap ETF	5.42%	3,501,800	137.73M	Sep 29, 2026
SmallCap World Fund Inc	4.56%	2,945,654	115.85M	Sep 29, 2026
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund	2.71%	1,750,345	68.84M	Jun 29, 2026
iShares Trust-iShares Russell 2000 ETF	2.28%	1,471,657	57.88M	Sep 29, 2026
VANGUARD WORLD FUND-Vanguard Information Technology Index Fund	2.01%	1,300,443	51.15M	Aug 30, 2026
Invesco Exchange-Traded Fund Trust-Invesco Semiconductors ETF	1.36%	880,204	34.62M	Sep 29, 2026

ACMR insiders
Insider	Relation	Latest transaction	Date	Shares held
CHEAV SOTHEARA	Officer	Conversion of Exercise of derivative security	Jun 4, 2026	100,002
CHEN FUPING	Officer	Conversion of Exercise of derivative security	Dec 2, 2025	0
DUN HAIPING	Director	Conversion of Exercise of derivative security	Aug 17, 2026	855,090
FENG LISA YI LU	Officer	Conversion of Exercise of derivative security	Mar 5, 2026	50,001
HU CHENMING C	Director	Sale	Mar 16, 2025	100,002
LIU TRACY DONG	Director	Conversion of Exercise of derivative security	Mar 10, 2026	110,772

Held by funds