ACLS
Axcelis Technologies, Inc. · Technology · Semiconductors
Momentum inputs (comparable managers):
holder breadth +7.7% ·
share flow -1.9% ·
net new positions +7.1%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 115 | +8 | 23.56M | $4.45B | +14 | −6 |
| Q1 2026 | 110 | -2 | 24.77M | $2.31B | +8 | −11 |
| Q4 2025 | 113 | -1 | 26.05M | $2.10B | +2 | −2 |
| Q3 2025 | 19 | +2 | 15.18M | $1.48B | +3 | −2 |
| Q2 2025 | 15 | 0 | 13.89M | $968.02M | — | — |
| Q1 2025 | 12 | -2 | 4.01M | $199.11M | — | −2 |
| Q4 2024 | 14 | -1 | 4.97M | $347.01M | — | −1 |
| Q3 2024 | 14 | +1 | 3.52M | $369.55M | +2 | −1 |
| Q2 2024 | 13 | — | 3.59M | $510.78M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | PRIMECAP Management ✦ | 974.44K | -1.6% | $102.17M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 874.52K | +3.3% | $91.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 874.52K | +3.3% | $91.71M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | T. Rowe Price ✦ | 526.86K | -0.8% | $55.24M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 5 | T. Rowe Price ✦ | 526.86K | -0.8% | $55.24M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 6 | Norges Bank ✦ (passive) | 440.72K | -5.0% | $46.21M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 7 | Wellington Management ✦ | 203.51K | -20.8% | $21.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 8 | Wellington Management ✦ | 203.51K | -20.8% | $21.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 9 | Marshall Wace ✦ | 185.67K | +799.1% | $19.47M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 10 | Millennium Management ✦ | 116.70K | -45.5% | $12.24M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 11 | Citadel Advisors ✦ | 79.14K | -50.9% | $8.30M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 12 | Citadel Advisors ✦ | 79.14K | -50.9% | $8.30M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 13 | Renaissance Technologies ✦ | 39.80K | New | $4.17M | 0.0% | New | 1 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 30.39K | -34.9% | $3.19M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 15 | AQR Capital Management ✦ | 30.39K | -34.9% | $3.19M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 16 | AQR Capital Management ✦ | 30.39K | -34.9% | $3.19M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 17 | Bridgewater Associates ✦ | 19.05K | -35.4% | $2.00M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 18 | D. E. Shaw & Co. ✦ | 14.86K | -17.6% | $1.56M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 19 | D. E. Shaw & Co. ✦ | 14.86K | -17.6% | $1.56M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 20 | Gotham Asset Management ✦ | 11.42K | -4.5% | $1.20M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 21 | Two Sigma Investments ✦ | 7.30K | New | $765,405 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Renaissance Technologies | $4.17M | 0.0% |
| Two Sigma Investments | $765,405 | 0.0% |
Exited
| GAMCO Investors | $236,746 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 371 holders, 32.35M shares, $2.91B 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.