ACM Research, Inc. (ACMR) ownership: Shanghai Pudong Innotek Capital Co., Ltd. 21% · institutions 68% (13F 2026-03-31). Insider activity, 90 days: Routine (6 sales, 0 open-market buys). SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| BlackRock | 7984847.00 | $314.20M | 11.1% | 2026-03-31 |
| Vanguard | 4884173.00 | $192.19M | 6.8% | 2026-03-31 |
| State Street | 2006116.00 | $78.94M | 2.8% | 2026-03-31 |
| Triata Capital Ltd | 1929919.00 | $76.14M | 2.7% | 2026-03-31 |
| WCM Investment Management, LLC | 1860874.00 | $70.58M | 2.6% | 2026-03-31 |
| Geode Capital Management | 1371227.00 | $53.97M | 1.9% | 2026-03-31 |
| Morgan Stanley | 1192705.00 | $46.93M | 1.7% | 2026-03-31 |
| Janus Henderson | 1085634.00 | $42.70M | 1.5% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-20 | |
| Sell | null | 2026-08-20 | |
| Sell | null | 2026-08-20 | |
| Sell | null | 2026-08-20 | |
| Sell | null | 2026-08-20 | |
| Sell | null | 2026-08-20 | |
| Sell | null | 2026-08-20 | |
| Sell | null | 2026-08-18 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.