Position in DAIO
as of Jun 30, 2026
· filed Jul 23, 2026
Position Value
$1,402,049
+$499,219 QoQ
Shares Held
355,850
-0.3% QoQ
Ownership
3.42%
of shares outstanding
% of Portfolio
0.95%
of 13F equity value
Holder Rank
#3
of 35 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 0%
Shared 0%
None 100%
Common Shares in DAIO Over Time
Shares Held
Position Value (USD)
Position in Electronic Components
Technology · as of Jun 30, 2026Penbrook Management LLC holds $1,797,521 across 2 Electronic Components names. DAIO ranks #1 (78.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | DAIO |
Data I/O Corp
This page
|
355,850 | $1,402,049 | |
| 2 | KOPN |
Kopin Corp
|
88,275 | $395,472 |
All Filings in DAIO
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26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,402,049 | 355,850 | Shares | Sole | 2026-07-23 | |
| 2026-03-31 | $902,830 | 356,850 | Shares | Sole | 2026-04-21 | |
| 2025-12-31 | $1,131,214 | 356,850 | Shares | Sole | 2026-01-06 | |
| 2025-09-30 | $1,178,185 | 352,750 | Shares | Sole | 2025-10-22 | |
| 2025-06-30 | $835,295 | 269,450 | Shares | Sole | 2025-07-25 | |
| 2025-03-31 | $660,152 | 269,450 | Shares | Sole | 2025-04-01 | |
| 2024-12-31 | $751,916 | 271,450 | Shares | Sole | 2025-01-23 | |
| 2024-09-30 | $697,626 | 271,450 | Shares | Sole | 2024-10-15 | |
| 2024-06-30 | $861,258 | 312,050 | Shares | Sole | 2024-07-24 | |
| 2024-03-31 | $1,098,416 | 312,050 | Shares | Sole | 2024-04-18 | |
| 2023-12-31 | $1,006,509 | 342,350 | Shares | Sole | 2024-01-16 | |
| 2023-09-30 | $1,311,592 | 344,250 | Shares | Sole | 2023-10-10 | |
| 2023-06-30 | $1,489,702 | 347,250 | Shares | Sole | 2023-07-17 | |
| 2023-03-31 | $1,725,832 | 347,250 | Shares | Sole | 2023-04-20 | |
| 2022-12-31 | $1,388,507 | 349,750 | Shares | Sole | 2023-01-24 | |
| 2022-09-30 | $978,592 | 350,750 | Shares | Sole | 2022-10-31 | |
| 2022-06-30 | $1,076,802 | 350,750 | Shares | Sole | 2022-07-29 | |
| 2022-03-31 | $1,491,537 | 350,950 | Shares | Sole | 2022-04-26 | |
| 2021-12-31 | $1,617,879 | 350,950 | Shares | Sole | 2022-01-10 | |
| 2021-09-30 | $2,278,643 | 348,950 | Shares | Sole | 2021-10-26 | |
| 2021-06-30 | $2,383,159 | 349,950 | Shares | Sole | 2021-07-27 | |
| 2021-03-31 | $1,936,295 | 357,250 | Shares | Sole | 2021-05-06 | |
| 2020-12-31 | $1,482,170 | 359,750 | Shares | Sole | 2022-04-25 | |
| 2020-09-30 | $1,160,223 | 364,850 | Shares | Sole | 2020-10-23 | |
| 2020-06-30 | $1,039,721 | 307,610 | Shares | Sole | 2020-07-28 | |
| 2020-03-31 | $848,648 | 302,010 | Shares | Sole | 2020-04-14 | |
| No filing history on record for this holder in this stock. | ||||||