Security record · archived quarter
ACLS
Axcelis Technologies, Inc. · Technology · Semiconductors
19Tracked holders
+2Δ holders
15.18MShares held
$1.48BReported value
+3New positions
−2Exits
Momentum inputs (comparable managers):
holder breadth +11.8% ·
share flow -0.2% ·
net new positions +5.3%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
Ownership over time
| 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 | — | — |
Who holds it · Q3 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 4.86M | -3.1% | $474.94M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 16 | The Vanguard Group ✦ (passive) | 4.19M | -3.2% | $408.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 17 | The Vanguard Group ✦ (passive) | 4.19M | -3.2% | $408.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 18 | The Vanguard Group ✦ (passive) | 4.19M | -3.2% | $408.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 19 | The Vanguard Group ✦ (passive) | 4.19M | -3.2% | $408.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 20 | The Vanguard Group ✦ (passive) | 4.19M | -3.2% | $408.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 21 | State Street Global Advisors ✦ (passive) | 1.23M | -1.5% | $120.11M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 22 | Geode Capital Management ✦ (passive) | 926.74K | +0.1% | $90.50M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 23 | Geode Capital Management ✦ (passive) | 926.74K | +0.1% | $90.50M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 24 | PRIMECAP Management ✦ | 833.68K | -2.2% | $81.40M | 0.1% | ▼ Trim | 6 | SEC ↗ |
| 25 | Fidelity (FMR) ✦ | 551.40K | +44.1% | $53.84M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 26 | Fidelity (FMR) ✦ | 551.40K | +44.1% | $53.84M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 27 | Fidelity (FMR) ✦ | 551.40K | +44.1% | $53.84M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 28 | T. Rowe Price ✦ | 532.11K | +0.6% | $51.96M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 29 | T. Rowe Price ✦ | 532.11K | +0.6% | $51.96M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 30 | Goldman Sachs Group ✦ | 494.77K | — | $48.31M | 0.0% | n/c | 1 | SEC ↗ |
| 31 | Goldman Sachs Group ✦ | 494.77K | — | $48.31M | 0.0% | n/c | 1 | SEC ↗ |
| 32 | Goldman Sachs Group ✦ | 494.77K | — | $48.31M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | Morgan Stanley ✦ | 454.09K | — | $44.34M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | Morgan Stanley ✦ | 454.09K | — | $44.34M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | Morgan Stanley ✦ | 454.09K | — | $44.34M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | Morgan Stanley ✦ | 454.09K | — | $44.34M | 0.0% | n/c | 1 | SEC ↗ |
| 37 | Morgan Stanley ✦ | 454.09K | — | $44.34M | 0.0% | n/c | 1 | SEC ↗ |
| 38 | Morgan Stanley ✦ | 454.09K | — | $44.34M | 0.0% | n/c | 1 | SEC ↗ |
| 39 | Morgan Stanley ✦ | 454.09K | — | $44.34M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | Morgan Stanley ✦ | 454.09K | — | $44.34M | 0.0% | n/c | 1 | SEC ↗ |
| 41 | Morgan Stanley ✦ | 454.09K | — | $44.34M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | Morgan Stanley ✦ | 454.09K | — | $44.34M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | JPMorgan Chase ✦ | 434.79K | — | $42.45M | 0.0% | n/c | 1 | SEC ↗ |
| 44 | JPMorgan Chase ✦ | 434.79K | — | $42.45M | 0.0% | n/c | 1 | SEC ↗ |
| 45 | JPMorgan Chase ✦ | 434.79K | — | $42.45M | 0.0% | n/c | 1 | SEC ↗ |
| 46 | JPMorgan Chase ✦ | 434.79K | — | $42.45M | 0.0% | n/c | 1 | SEC ↗ |
| 47 | JPMorgan Chase ✦ | 434.79K | — | $42.45M | 0.0% | n/c | 1 | SEC ↗ |
| 48 | JPMorgan Chase ✦ | 434.79K | — | $42.45M | 0.0% | n/c | 1 | SEC ↗ |
| 49 | JPMorgan Chase ✦ | 434.79K | — | $42.45M | 0.0% | n/c | 1 | SEC ↗ |
| 50 | JPMorgan Chase ✦ | 434.79K | — | $42.45M | 0.0% | n/c | 1 | SEC ↗ |
| 51 | JPMorgan Chase ✦ | 434.79K | — | $42.45M | 0.0% | n/c | 1 | SEC ↗ |
| 52 | JPMorgan Chase ✦ | 434.79K | — | $42.45M | 0.0% | n/c | 1 | SEC ↗ |
| 53 | Millennium Management ✦ | 261.78K | +143.8% | $25.56M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 54 | D. E. Shaw & Co. ✦ | 154.34K | +97.2% | $15.07M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 55 | D. E. Shaw & Co. ✦ | 154.34K | +97.2% | $15.07M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 56 | Arrowstreet Capital ✦ | 117.80K | New | $11.50M | 0.0% | New | 1 | SEC ↗ |
| 57 | Two Sigma Investments ✦ | 37.16K | +3.5% | $3.63M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 58 | AQR Capital Management ✦ | 36.65K | -15.4% | $3.58M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 59 | AQR Capital Management ✦ | 36.65K | -15.4% | $3.58M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 60 | AQR Capital Management ✦ | 36.65K | -15.4% | $3.58M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 61 | AQR Capital Management ✦ | 36.65K | -15.4% | $3.58M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 62 | AQR Capital Management ✦ | 36.65K | -15.4% | $3.58M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 63 | Citadel Advisors ✦ | 26.83K | -89.5% | $2.62M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 64 | Citadel Advisors ✦ | 26.83K | -89.5% | $2.62M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 65 | Marshall Wace ✦ | 25.68K | New | $2.51M | 0.0% | New | 1 | SEC ↗ |
| 66 | Gotham Asset Management ✦ | 11.02K | -19.2% | $1.08M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 67 | Bridgewater Associates ✦ | 2.22K | New | $217,151 | 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
| Arrowstreet Capital | $11.50M | 0.0% |
| Marshall Wace | $2.51M | 0.0% |
| Bridgewater Associates | $217,151 | 0.0% |
Exited
| Norges Bank | $4.35M | was 0.0% |
| Renaissance Technologies | $759,551 | 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.
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: Q3 2025 ·
Methodology ·
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