Data I/O
DAIO · NASDAQ
$2.58+$0.06 (+2.38%)TodayMarket closed ·
Prev close $2.52
Who owns DAIO
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 38.1% of DAIO’s shares.
- Lytton-Kambara Foundation9.3%
- Kanen Wealth Management, LLC8.9%
- Renaissance Technologies LLC4.2%
- Penbrook Management, LLC3.8%
- Next 6 largest institutions11.9%
- All other shareholders61.9%
| Holder | Shares | % of shares |
|---|---|---|
| Lytton-Kambara Foundation | 870.62K | 9.27% |
| Kanen Wealth Management, LLC | 839.42K | 8.94% |
| Renaissance Technologies LLC | 392.44K | 4.18% |
| Penbrook Management, LLC | 355.85K | 3.79% |
| Vanguard Capital Management, LLC | 323.67K | 3.45% |
| Kovack Advisors Inc | 285.48K | 3.04% |
| Lytton (Laurence W) | 145.54K | 1.55% |
| Dimensional Fund Advisors, L.P. | 140.68K | 1.50% |
| Geode Capital Management, L.L.C. | 115.06K | 1.23% |
| Acadian Asset Management LLC | 108.58K | 1.16% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Philotimo Focused Growth and Income Fund | 327.40K | 3.49% |
| Vanguard Total Stock Market Index Fund | 214.24K | 2.28% |
| Vanguard Extended Market Index Fund | 109.13K | 1.16% |
| Fidelity Extended Market Index Fund | 47.55K | 0.51% |
| DFA U.S. Micro Cap Portfolio | 46.14K | 0.49% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of DAIO in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| DiBona Charles Joseph | Tax withholding | 10.35K | $29.85K |
| Larson Garrett Riley | Award | 16.26K | $57.80K |
| Washlow Sally A. | Award | 16.26K | $57.80K |
| SMITH EDWARD J | Award | 16.26K | $57.80K |
| WASZAK STEVEN M | Award | 16.26K | $57.80K |
Short interest
Settled Sep 30, 2026
- Shares short
- 15.68K
- Days to cover
- 1.00
- % of shares outstanding
- 0.17%
- Average daily volume
- 23.41K
- Change since last report
- +132.9%
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