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ACM Research Ownership | Who Owns ACM Research?

OverviewForecastRevenueFinancialsChartTranscripts

ACM Research Ownership Summary

ACM Research is owned by 13.08% institutional investors, 15.00% insiders, and 71.92% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 12.25% of ACMR shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 4.98% of its assets in ACM Research shares.

ACMR Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockACM Research13.08%15.00%71.92%
SectorTechnology Stocks 35.23%13.13%51.64%
IdeaSemiconductor Stocks List 60.61%7.19%32.20%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock funding, inc. /de7.89M12.25%$311.20M
Vanguard group4.97M7.72%$196.15M
Blackrock4.07M6.63%$93.87M
Lsv asset management2.38M3.70%$93.91M
Triata capital2.00M3.13%$78.39B
State street1.99M3.11%$77.88M
Southeastern asset management inc/tn/1.49M2.32%$58.13M
Morgan stanley1.39M2.16%$54.93M
Geode capital management1.34M2.09%$52.99M
Broad bay capital management, lp1.01M1.58%$39.62M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Triata capital2.00M9.15%$78.39B
My.alpha management hk advisors360.24K9.13%$14.10M
Cederberg capital496.50K5.55%$19.43M
Steamboat capital partners525.00K5.35%$20.54M
Broad bay capital management, lp1.01M4.90%$39.62M
Panview asian equity master fund663.20K3.86%$15.29M
Kerrisdale advisers176.58K3.58%$6.91M
Southeastern asset management inc/tn/1.49M2.97%$58.13M
Seldon capital lp193.24K2.66%$7.56M
Matthews capital management187.25K2.24%$7.39M

Top Buyers

HolderShares% AssetsChange
State street1.99M0.00%735.55K
Morgan stanley1.39M0.00%515.34K
Cederberg capital496.50K5.55%496.50K
Penn capital management company435.84K1.37%435.84K
Triata capital2.00M9.15%413.00K

Top Sellers

HolderShares% AssetsChange
Fuller & thaler asset management---1.27M
Federated hermes19.05K0.00%-1.04M
Pertento partners llp---1.02M
Point72 hong kong---761.16K
Sg capital management---583.53K

New Positions

HolderShares% AssetsChangeValue
Cederberg capital496.50K5.55%496.50K$19.43M
Penn capital management company435.84K1.37%435.84K$17.21M
Portolan capital management405.86K0.86%405.86K$15.88M
My.alpha management hk advisors360.24K9.13%360.24K$14.10M
Dimensional fund advisors lp233.74K0.00%233.74K$9.22M

Sold Out

HolderChange
Clearstead advisors-1.00
Assetmark-1.00
Innealta capital-3.00
Hollencrest capital management-5.00
Us bancorp \de\-7.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Dec 31, 202579-72.08%8,417,862-79.85%130.31%45-70.20%24-68.42%
Sep 30, 2025104-60.31%13,195,748-64.68%200.60%56-59.71%28-58.21%
Jun 30, 2025261-0.38%37,343,1784.28%581.82%139-9.15%66-
Mar 31, 202525833.68%35,754,1310.15%561.73%14946.08%6617.86%
Dec 31, 2024191-3.54%35,683,26211.73%572.19%10212.09%54-15.63%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
iShares Core S&P Small-Cap ETF3.23M4.98%3.23M
Vanguard Total Stock Mkt Idx Inv1.60M2.47%4.27K
Vanguard US Total Market Shares ETF1.53M2.43%-
Asia Pacific Separately Mangaed Account1.49M2.30%121.26K
Federated Hermes Asia exJpn Eq R EUR Acc1.38M2.16%-
Vanguard Information Technology ETF1.30M2.01%5.34K
iShares Russell 2000 ETF1.22M1.88%192.67K
Panview Asian Equity Master Fund1.17M1.87%504.00K
R51 FSSA China Growth806.90K1.29%-
Invesco Semiconductors ETF825.81K1.27%1.85K

Recent Insider Transactions

DateNameRoleActivityValue
Dec 04, 2025McKechnie Mark See RemarksSell$34.12K
Dec 08, 2025McKechnie Mark See RemarksSell$797.63K
Dec 04, 2025McKechnie Mark See RemarksSell$259.76K
Dec 04, 2025Wang David H See RemarksSell$664.27K
Dec 03, 2025Wang David H See RemarksSell$2.27M

Insider Transactions Trends

DateBuySell
2026 Q1--
2025 Q4-12
2025 Q3-11
2025 Q2-5
2025 Q1-11

ACMR Ownership FAQ

Who owns the most shares of ACM Research?

ACM Research’s largest shareholders are Blackrock funding, inc. /de (7.89M shares, 12.25%), Vanguard group (4.97M shares, 7.72%), and Blackrock (4.07M shares, 6.63%). Together, they hold 26.61% of ACM Research’s total shares outstanding.

Does Blackrock own ACM Research?

Yes, BlackRock owns 6.63% of ACM Research, totaling 4.07M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 93.87M$. In the last quarter, BlackRock increased its holdings by 109.3K shares, a 2.76% change.

Who is ACM Research’s biggest shareholder by percentage of total assets invested?

Triata capital is ACM Research’s biggest shareholder by percentage of total assets invested, with 9.15% of its assets in 2M ACM Research shares, valued at 78.39B$.

Who is the top mutual fund holder of ACM Research shares?

iShares Core S&P Small-Cap ETF is the top mutual fund holder of ACM Research shares, with 4.98% of its total shares outstanding invested in 3.23M ACM Research shares.

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