ACMR ACM Research, Inc.
ACM Research, Inc. (ACMR) Institutional Ownership
What the institutions did with ACMR last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 8.7M | 17.9% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.3M | 6.9% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.5M | 5.1% |
| Capital World Investors | 2.4M | 4.9% |
| STATE STREET CORP | 2.2M | 4.5% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.5M | 3.1% |
| Invesco Ltd. | 1.2M | 2.4% |
| Value Aligned Research Advisors, LLC | 1.1M | 2.2% |
| WFM ASIA (BVI) Ltd | 969.2K | 2.0% |
| DIMENSIONAL FUND ADVISORS LP | 954.5K | 2.0% |
| WCM INVESTMENT MANAGEMENT, LLC | 917.7K | 1.9% |
| Polunin Capital Partners Ltd | 748.5K | 1.5% |
| Tekne Capital Management, LLC | 737.5K | 1.5% |
| MORGAN STANLEY | 700.2K | 1.4% |
| FMR LLC | 672.2K | 1.4% |
| FULLER & THALER ASSET MANAGEMENT, INC. | 639.4K | 1.3% |
| GILDER GAGNON HOWE & CO LLC | 637.1K | 1.3% |
| CITADEL ADVISORS LLC | 636.8K | 1.3% |
| Capital International Investors | 623.4K | 1.3% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 591.6K | 1.2% |
| NORTHERN TRUST CORP | 569.1K | 1.2% |
| Jupiter Topco LLC | 553.8K | 1.1% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 526.8K | 1.1% |
| BANK OF AMERICA CORP /DE/ | 479.7K | 1.0% |
| Tidal Investments LLC | 470.9K | 1.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Capital World Investors | New | 0 | 2.4M | +2.4M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 2.2M | 3.3M | +1.1M |
| WFM ASIA (BVI) Ltd | New | 0 | 969.2K | +969.2K |
| WCM INVESTMENT MANAGEMENT, LLC | Reduced | 1.9M | 917.7K | -943.2K |
| Longaeva Partners L.P. | Reduced | 708.4K | 17.7K | -690.6K |
| BlackRock, Inc. | Increased | 8.0M | 8.7M | +676.0K |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ | Reduced | 782.9K | 139.5K | -643.4K |
| FULLER & THALER ASSET MANAGEMENT, INC. | New | 0 | 639.4K | +639.4K |
| Capital International Investors | New | 0 | 623.4K | +623.4K |
| Oxbow Capital Management (HK) Ltd | Sold Out | 596.7K | 0 | -596.7K |
| GILDER GAGNON HOWE & CO LLC | Increased | 71.2K | 637.1K | +565.8K |
| LSV ASSET MANAGEMENT | Reduced | 545.3K | 12.1K | -533.2K |
| MORGAN STANLEY | Reduced | 1.2M | 700.2K | -492.5K |
| Qube Research & Technologies Ltd | Reduced | 724.4K | 280.0K | -444.4K |
| CITADEL ADVISORS LLC | Increased | 203.4K | 636.8K | +433.5K |
| CITIGROUP INC | Reduced | 619.9K | 209.8K | -410.0K |
| Invesco Ltd. | Increased | 787.1K | 1.2M | +383.0K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 217.0K | 591.6K | +374.6K |
| Cederberg Capital Ltd | Reduced | 599.2K | 254.7K | -344.5K |
| MY.Alpha Management HK Advisors Ltd | New | 0 | 249.5K | +249.5K |
| WEXFORD CAPITAL LP | Reduced | 599.2K | 355.4K | -243.8K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 719.0K | 954.5K | +235.5K |
| 12 West Capital Management LP | Increased | 6.1K | 225.0K | +218.9K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 2.3M | 2.5M | +198.4K |
| MACKENZIE FINANCIAL CORP | Increased | 70.9K | 268.0K | +197.1K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.