Ownership history in Penbrook Management LLC · 49 quarters on record
This page tracks every 13F SEC filing in which Penbrook Management LLC reported a position in AXCELIS TECHNOLOGIES INC COM (ACLS). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.
| Quarter | Action | Shares | Change | Chg % | % of Fund | Mkt Value | Price (EOQ) |
|---|---|---|---|---|---|---|---|
| 2025 Q4 | REDUCED | 15,895 | -1,000 | -5.9% | 0.88% | $1.3M | $80.34 |
| 2025 Q3 | REDUCED | 16,895 | -2,745 | -14.0% | 1.15% | $1.6M | $97.64 |
| 2025 Q2 | UNCHANGED | 19,640 | — | 0% | 0.74% | $976K | $69.69 |
| 2025 Q1 | ADDED | 19,640 | +75 | +0.4% | 0.74% | $976K | $49.67 |
| 2024 Q4 | UNCHANGED | 19,565 | — | 0% | 0.93% | $1.4M | $69.87 |
| 2024 Q3 | REDUCED | 19,565 | -3,360 | -14.7% | 1.33% | $2.1M | $104.85 |
| 2024 Q2 | REDUCED | 22,925 | -19,535 | -46.0% | 1.99% | $3.3M | $142.19 |
| 2024 Q1 | REDUCED | 42,460 | -580 | -1.3% | 2.93% | $4.7M | $111.52 |
| 2023 Q4 | REDUCED | 43,040 | -550 | -1.3% | 3.75% | $5.6M | $129.69 |
| 2023 Q3 | REDUCED | 43,590 | -1,035 | -2.3% | 5.21% | $7.1M | $163.05 |
As of 2025 Q4 — sorted by position size