Who owns ACM Research, Inc.?
Institutional ownership of ACMR from SEC Form 13F filings across 236 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
236
13F holders
$4.38B
value, 2026 filers
55.3%
of shares outstanding (35.4M sh)
72
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of ACMR's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 8.7M | $1.10B | 0.0% | 13.5% | +8.5% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.3M | $425.0M | 0.0% | 5.2% | +52.0% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 2.5M | $312.5M | 0.0% | 3.8% | -45.6% |
| 4 | Capital World InvestorsNEW | 2.4M | $304.3M | 0.0% | 3.7% | new |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 1.5M | $188.8M | 0.0% | 2.3% | +8.5% |
| 6 | Invesco Ltd. | 1.2M | $148.5M | 0.0% | 1.8% | +48.7% |
| 7 | MORGAN STANLEY | 700,185 | $88.8M | 0.0% | 1.1% | -41.3% |
| 8 | FMR LLC | 672,184 | $85.3M | 0.0% | 1% | +6.8% |
| 9 | GILDER GAGNON HOWE & CO LLC | 637,058 | $80.8M | 0.8% | 1% | +794.2% |
| 10 | CITADEL ADVISORS LLC | 636,836 | $80.8M | 0.0% | 1% | +213.1% |
| 11 | Capital International InvestorsNEW | 623,429 | $79.1M | 0.0% | 1% | new |
| 12 | PRICE T ROWE ASSOCIATES INC /MD/ | 591,573 | $75,066 | 0.0% | 0.9% | +172.7% |
| 13 | NORTHERN TRUST CORP | 569,126 | $72.2M | 0.0% | 0.9% | +1.2% |
| 14 | Jupiter Topco LLCNEW | 553,768 | $70.2M | 0.0% | 0.9% | new |
| 15 | Sixth Street Partners Management Company, L.P.NEW | 526,760 | $66.8M | 11.5% | 0.8% | new |
| 16 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 526,760 | $66.8M | 0.0% | 0.8% | +9.5% |
| 17 | BANK OF AMERICA CORP /DE/ | 479,706 | $60.9M | 0.0% | 0.7% | +19.2% |
| 18 | Tidal Investments LLC | 470,937 | $59.8M | 0.1% | 0.7% | +50.1% |
| 19 | GOLDMAN SACHS GROUP INC | 426,243 | $54.1M | 0.0% | 0.7% | -22.8% |
| 20 | VANGUARD FIDUCIARY TRUST CO | 404,100 | $51.3M | 0.0% | 0.6% | +18.4% |
| 21 | UBS Group AG | 402,473 | $51.1M | 0.0% | 0.6% | -0.4% |
| 22 | Public Sector Pension Investment Board | 392,024 | $49.7M | 0.1% | 0.6% | +105.7% |
| 23 | PRINCIPAL FINANCIAL GROUP INC | 370,913 | $47.1M | 0.0% | 0.6% | +8.9% |
| 24 | Mitsubishi UFJ Trust & Banking Corp | 351,204 | $44.6M | 0.1% | 0.5% | -24.6% |
| 25 | Bank of New York Mellon Corp | 326,284 | $41.4M | 0.0% | 0.5% | +3.7% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.