ACM Research Ownership | Who Owns ACM Research?
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 4.87% of its assets in ACM Research shares.
ACMR Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | ACM Research | 13.08% | 15.00% | 71.92% |
| Sector | Technology Stocks | 35.36% | 13.13% | 51.51% |
| Idea | Semiconductor Stocks List | 60.61% | 7.19% | 32.20% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 7.89M | 12.25% | $311.20M |
| Vanguard group | 4.97M | 7.72% | $196.15M |
| Blackrock | 4.07M | 6.63% | $93.87M |
| Lsv asset management | 2.38M | 3.70% | $93.91M |
| Triata capital | 2.00M | 3.13% | $78.39B |
| State street | 1.99M | 3.11% | $77.88M |
| Southeastern asset management inc/tn/ | 1.49M | 2.32% | $58.13M |
| Morgan stanley | 1.39M | 2.16% | $54.93M |
| Geode capital management | 1.34M | 2.09% | $52.99M |
| Broad bay capital management, lp | 1.01M | 1.58% | $39.62M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Triata capital | 2.00M | 9.15% | $78.39B |
| My.alpha management hk advisors | 360.24K | 9.13% | $14.10M |
| Polunin capital partners | 763.32K | 8.25% | $31.81M |
| Cederberg capital | 496.50K | 5.55% | $19.43M |
| Steamboat capital partners | 525.00K | 5.35% | $20.54M |
| Broad bay capital management, lp | 1.01M | 4.90% | $39.62M |
| Panview asian equity master fund | 663.20K | 3.86% | $15.29M |
| Kerrisdale advisers | 176.58K | 3.58% | $6.91M |
| Southeastern asset management inc/tn/ | 1.49M | 2.97% | $58.13M |
| Seldon capital lp | 193.24K | 2.66% | $7.56M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Polunin capital partners | 763.32K | 8.25% | 763.32K |
| State street | 1.99M | 0.00% | 735.55K |
| Morgan stanley | 1.39M | 0.00% | 515.34K |
| Cederberg capital | 496.50K | 5.55% | 496.50K |
| Penn capital management company | 435.84K | 1.37% | 435.84K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fuller & thaler asset management | - | - | -1.27M |
| Federated hermes | 19.05K | 0.00% | -1.04M |
| Pertento partners llp | - | - | -1.02M |
| Point72 hong kong | - | - | -761.16K |
| Sg capital management | - | - | -583.53K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Polunin capital partners | 763.32K | 8.25% | 763.32K | $31.81M |
| Cederberg capital | 496.50K | 5.55% | 496.50K | $19.43M |
| Penn capital management company | 435.84K | 1.37% | 435.84K | $17.21M |
| Portolan capital management | 405.86K | 0.86% | 405.86K | $15.88M |
| My.alpha management hk advisors | 360.24K | 9.13% | 360.24K | $14.10M |
Sold Out
| Holder | Change |
|---|---|
| Clearstead advisors | -1.00 |
| Assetmark | -1.00 |
| Innealta capital | -3.00 |
| Hollencrest capital management | -5.00 |
| Us bancorp \de\ | -7.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 79 | -72.08% | 8,417,862 | -79.85% | 13 | 0.31% | 45 | -70.20% | 24 | -68.42% |
| Sep 30, 2025 | 104 | -60.31% | 13,195,748 | -64.68% | 20 | 0.60% | 56 | -59.71% | 28 | -58.21% |
| Jun 30, 2025 | 261 | -0.38% | 37,343,178 | 4.28% | 58 | 1.82% | 139 | -9.15% | 66 | - |
| Mar 31, 2025 | 258 | 33.68% | 35,754,131 | 0.15% | 56 | 1.73% | 149 | 46.08% | 66 | 17.86% |
| Dec 31, 2024 | 191 | -3.54% | 35,683,262 | 11.73% | 57 | 2.19% | 102 | 12.09% | 54 | -15.63% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 3.20M | 4.87% | 1.22K |
| Vanguard Total Stock Mkt Idx Inv | 1.62M | 2.46% | 9.24K |
| Vanguard US Total Market Shares ETF | 1.53M | 2.43% | - |
| Federated Hermes Asia exJpn Eq R EUR Acc | 1.38M | 2.16% | - |
| Vanguard Information Technology ETF | 1.30M | 1.98% | -1.50K |
| iShares Russell 2000 ETF | 1.25M | 1.90% | -10.20K |
| Panview Asian Equity Master Fund | 1.17M | 1.87% | 504.00K |
| R51 FSSA China Growth | 806.90K | 1.29% | - |
| Invesco Semiconductors ETF | 825.81K | 1.26% | - |
| Asia Pacific Separately Mangaed Account | 680.75K | 1.04% | -810.43K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Apr 17, 2026 | Pappis Charles C | - | Sell | $260.00K |
| Mar 12, 2026 | McKechnie Mark | See Remarks | Sell | $1.34M |
| Mar 12, 2026 | McKechnie Mark | See Remarks | Sell | $534.64K |
| Mar 12, 2026 | McKechnie Mark | See Remarks | Sell | $388.24K |
| Mar 12, 2026 | McKechnie Mark | See Remarks | Sell | $2.15M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | 22 |
| 2025 Q4 | - | 12 |
| 2025 Q3 | - | 11 |
| 2025 Q2 | - | 5 |
| 2025 Q1 | - | 11 |
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