Ownership history in Penbrook Management LLC · 53 quarters on record
This page tracks every 13F SEC filing in which Penbrook Management LLC reported a position in Data I/O Corp COM (DAIO). 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 | ADDED | 356,850 | +4,100 | +1.2% | 0.78% | $1.1M | $3.17 |
| 2025 Q3 | ADDED | 352,750 | +83,300 | +30.9% | 0.82% | $1.2M | $3.34 |
| 2025 Q2 | UNCHANGED | 269,450 | — | 0% | 0.50% | $660K | $3.10 |
| 2025 Q1 | REDUCED | 269,450 | -2,000 | -0.7% | 0.50% | $660K | $2.45 |
| 2024 Q4 | UNCHANGED | 271,450 | — | 0% | 0.51% | $752K | $2.77 |
| 2024 Q3 | REDUCED | 271,450 | -40,600 | -13.0% | 0.45% | $698K | $2.57 |
| 2024 Q2 | UNCHANGED | 312,050 | — | 0% | 0.53% | $861K | $2.76 |
| 2024 Q1 | REDUCED | 312,050 | -30,300 | -8.9% | 0.68% | $1.1M | $3.52 |
| 2023 Q4 | REDUCED | 342,350 | -1,900 | -0.6% | 0.68% | $1.0M | $2.94 |
| 2023 Q3 | REDUCED | 344,250 | -3,000 | -0.9% | 0.96% | $1.3M | $3.81 |
As of 2025 Q4 — sorted by position size