ACMR
ACM Research, Inc. · Technology · Semiconductors
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 108 | +16 | 33.40M | $4.22B | +20 | −3 |
| Q1 2026 | 94 | +3 | 30.41M | $1.19B | +10 | −8 |
| Q4 2025 | 92 | -2 | 30.05M | $1.19B | +1 | −2 |
| Q3 2025 | 17 | 0 | 19.46M | $761.29M | +2 | −3 |
| Q2 2025 | 15 | +1 | 12.95M | $335.52M | +2 | −1 |
| Q1 2025 | 11 | +3 | 4.40M | $102.74M | +3 | — |
| Q4 2024 | 8 | -2 | 3.56M | $53.70M | — | −2 |
| Q3 2024 | 9 | 0 | 2.94M | $59.78M | +1 | −1 |
| Q2 2024 | 9 | — | 3.63M | $83.63M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Geode Capital Management ✦ (passive) | 1.15M | — | $26.62M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 2 | Millennium Management ✦ | 924.10K | — | $21.31M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Citadel Advisors ✦ | 686.67K | — | $15.83M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 4 | Norges Bank ✦ (passive) | 502.10K | — | $11.58M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | AQR Capital Management ✦ | 178.46K | — | $4.12M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 6 | Point72 Asset Management ✦ | 80.61K | — | $1.86M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | Two Sigma Investments ✦ | 49.69K | — | $1.15M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | T. Rowe Price ✦ | 32.75K | — | $756,000 | 0.0% | n/c | 1 | SEC ↗ |
| 9 | Marshall Wace ✦ | 17.90K | — | $412,774 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 298 holders, 44.10M shares, $1.62B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer, Director, 10% owner · 1.10K sh · $85,349
Officer, Director, 10% owner · 4.81K sh · $368,841
Officer, Director, 10% owner · 11.67K sh · $881,716
Officer, Director, 10% owner · 18.93K sh · $1.41M
Officer, Director, 10% owner · 33.49K sh · $2.47M
Officer, Director, 10% owner · 4.80K sh · $364,980
Officer, Director, 10% owner · 51.37K sh · $3.96M
Officer, Director, 10% owner · 12.32K sh · $962,180
Officer, Director, 10% owner · 1.50K sh · $117,855
Officer · 30.36K sh · $2.35M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology