Security record · archived quarter
ACLS
Axcelis Technologies, Inc. · Technology · Semiconductors
13Tracked holders
—Δ holders
3.59MShares held
$510.78MReported value
+0New positions
−0Exits
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2024
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 116 | +8 | 23.63M | $4.46B | +14 | −5 |
| 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 | — | — |
Who holds it · Q2 2024
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | PRIMECAP Management ✦ | 989.80K | — | $140.74M | 0.1% | n/c | 1 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 846.38K | — | $120.37M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 846.38K | — | $120.37M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | T. Rowe Price ✦ | 531.13K | — | $75.52M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | T. Rowe Price ✦ | 531.13K | — | $75.52M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | Norges Bank ✦ (passive) | 464.18K | — | $66.00M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | Wellington Management ✦ | 256.90K | — | $36.53M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | Wellington Management ✦ | 256.90K | — | $36.53M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | Millennium Management ✦ | 214.08K | — | $30.44M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | Citadel Advisors ✦ | 161.14K | — | $22.91M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | Citadel Advisors ✦ | 161.14K | — | $22.91M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | AQR Capital Management ✦ | 46.67K | — | $6.64M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 46.67K | — | $6.64M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 46.67K | — | $6.64M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | Bridgewater Associates ✦ | 29.49K | — | $4.19M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | Marshall Wace ✦ | 20.65K | — | $2.94M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | D. E. Shaw & Co. ✦ | 18.04K | — | $2.57M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | D. E. Shaw & Co. ✦ | 18.04K | — | $2.57M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | Gotham Asset Management ✦ | 11.96K | — | $1.70M | 0.0% | n/c | 1 | SEC ↗ |
| 20 | GAMCO Investors ✦ | 1.67K | — | $236,746 | 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): 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.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2024 ·
Methodology ·
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