Position in KOPN
as of Jun 30, 2026
· filed Jul 23, 2026
Position Value
$395,472
+$137,679 QoQ
Shares Held
88,275
-23.0% QoQ
Ownership
0.047%
of shares outstanding
% of Portfolio
0.27%
of 13F equity value
Holder Rank
#77
of 201 holders
Holding Since
Mar 2020
24 quarters on record
Voting authority
Sole 0%
Shared 0%
None 100%
Common Shares in KOPN 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. KOPN ranks #2 (22.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | DAIO |
Data I/O Corp
|
355,850 | $1,402,049 | |
| 2 | KOPN |
Kopin Corp
This page
|
88,275 | $395,472 |
All Filings in KOPN
Export CSV
24 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $395,472 | 88,275 | Shares | Sole | 2026-07-23 | |
| 2026-03-31 | $257,793 | 114,575 | Shares | Sole | 2026-04-21 | |
| 2025-12-31 | $269,041 | 114,975 | Shares | Sole | 2026-01-06 | |
| 2025-09-30 | $332,849 | 136,975 | Shares | Sole | 2025-10-22 | |
| 2025-06-30 | $142,787 | 93,325 | Shares | Sole | 2025-07-25 | |
| 2025-03-31 | $86,792 | 93,325 | Shares | Sole | 2025-04-01 | |
| 2024-12-31 | $66,062 | 48,575 | Shares | Sole | 2025-01-23 | |
| 2024-03-31 | $567,135 | 315,075 | Shares | Sole | 2024-04-18 | |
| 2023-12-31 | $654,827 | 322,575 | Shares | Sole | 2024-01-16 | |
| 2023-09-30 | $396,591 | 325,075 | Shares | Sole | 2023-10-10 | |
| 2023-06-30 | $698,911 | 325,075 | Shares | Sole | 2023-07-17 | |
| 2023-03-31 | $327,436 | 300,400 | Shares | Sole | 2023-04-20 | |
| 2022-12-31 | $393,328 | 317,200 | Shares | Sole | 2023-01-24 | |
| 2022-09-30 | $333,322 | 317,450 | Shares | Sole | 2022-10-31 | |
| 2022-06-30 | $359,464 | 320,950 | Shares | Sole | 2022-07-29 | |
| 2022-03-31 | $816,431 | 322,700 | Shares | Sole | 2022-04-26 | |
| 2021-12-31 | $1,319,843 | 322,700 | Shares | Sole | 2022-01-10 | |
| 2021-09-30 | $1,655,451 | 322,700 | Shares | Sole | 2021-10-26 | |
| 2021-06-30 | $2,636,823 | 322,350 | Shares | Sole | 2021-07-27 | |
| 2021-03-31 | $3,415,334 | 325,580 | Shares | Sole | 2021-05-06 | |
| 2020-12-31 | $1,461,875 | 601,595 | Shares | Sole | 2022-04-25 | |
| 2020-09-30 | $905,355 | 656,055 | Shares | Sole | 2020-10-23 | |
| 2020-06-30 | $838,072 | 630,130 | Shares | Sole | 2020-07-28 | |
| 2020-03-31 | $220,545 | 630,130 | Shares | Sole | 2020-04-14 | |
| No filing history on record for this holder in this stock. | ||||||