ACLS — AXCELIS TECHNOLOGIES INC
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
Others in Industrials
Measured signals that fired on ACLS
| date | signal | measured base rate |
|---|---|---|
| 2026-08-20 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-07-09 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-06-23 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-06-03 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-05-19 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-05-14 | Cluster sale: three or more insiders insider | -0.37% over 21 days · t = -3.38 · n = 21,542 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-07-15 | Ryzhik David SVP Interim CFO | Shares withheld for tax | 127 | 145.01 | 18.4K |
| 2026-07-15 | Ryzhik David SVP Interim CFO | Shares withheld for tax | 94 | 145.01 | 13.6K |
| 2026-06-16 | Ryzhik David SVP Interim CFO | Shares withheld for tax | 76 | 176.84 | 13.4K |
| 2026-06-15 | Blumenstock Gerald M EVP, Research, Dev. & Eng. | Shares withheld for tax | 506 | 191.60 | 96.9K |
| 2026-06-03 | Sayiner Necip Director | Open-market sale | 1.6K | 157.44 | 249.7K |
| 2026-06-02 | Mahoney Robert John EVP Global Operations | Open-market sale | 1.2K | 155.24 | 179.3K |
| 2026-05-27 | Sutton Todd VP Corporate Controller | Open-market sale | 2.0K | 159.99 | 320.0K |
| 2026-05-22 | Evans Eileen EVP, General Counsel and Sec'y | Open-market sale | 926 | 155.51 | 144.0K |
| 2026-05-22 | St Dennis Thomas Director | Open-market sale | 900 | 155.37 | 139.8K |
| 2026-05-21 | Blumenstock Gerald M EVP, Research, Dev. & Eng. | Open-market sale | 1.2K | 152.70 | 177.3K |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 459.5M | 4.9M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 231.6M | 2.5M |
| FMR LLC | 226.3M | 2.4M |
| REINHART PARTNERS, LLC. | 154.3M | 1.7M |
| VANGUARD CAPITAL MANAGEMENT LLC | 128.7M | 1.4M |
| Balyasny Asset Management L.P. | 127.0M | 1.4M |
| VICTORY CAPITAL MANAGEMENT INC | 119.0M | 1.3M |
| STATE STREET CORP | 110.7M | 1.2M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 93.6M | 1.0M |
| AMERICAN CENTURY COMPANIES INC | 88.6M | 951.9K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
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