Data I/O Corp
DAIO- Exchange
- Nasdaq
- Industry
- Instruments For Meas & Testing of Electricity & Elec Signals
- SEC CIK
- 0000351998
In the last 90 days, Data I/O Corp insiders filed 1 open-market purchase and 0 sales; 35 institutions reported holding it in 13F filings for Q2 2026, worth $12.2M in total; no superinvestor holds it.
Key figures
- Market capClose on Nov 10, 2026
- $25.3M
- Insider buysLast 90 days, $1.00M in total
- 1
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +6 vs. previous quarter
- 35
- 13F valueReported value at the end of Q2 2026
- $12.2M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- $21.5M
- −1.2% year over year
- Net income, FY2025
- -$5.24M
- No comparable prior period
- Free cash flow, FY2025
- -$2.79M
- No comparable prior period
- Revenue, Q2 FY2026
- $5.15M
- −13.4% year over year
Revenue flow, FY2025
Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.
Net loss for FY2025: $5.24M (24.4% of revenue).
Short interest
See short dataFrom FINRA, settlement date Oct 30, 2026.
- Short interest
- 11.7K
- Shares sold short
- Change
- +4.68K
- +66.6% vs. previous
- Days to cover
- 1.00
- At average daily volume
Superinvestors holding DAIO, Q2 2026
Go to the superinvestors tabNo superinvestor reported holding DAIO at the end of Q2 2026.
Latest insider trades
See all insider tradesOpen-market purchases and sales by Data I/O Corp insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Oct 27, 2026 (view filing)5:32 PM ET | Oct 20 | 7 daysLate | Red Oak Partners, LLC and 3 others10% Owner | PPurchase | +373.1K | $2.68 | +$1.00M | New position130.2K after | 2 lots |
| Oct 27, 2026 (view filing)5:32 PM ET | Oct 20 | 7 daysLate | Red Oak Partners, LLC and 3 others10% Owner | PPurchase | +1.12M | – | – | – | Derivative2 lotsPrice outlier |
| May 8, 2025 (view filing) | May 7 | 1 day | Smith Edward JDirector | PPurchase | +5.00K | $2.46 | +$12.3K | +13.2%42.8K after | |
| May 8, 2025 (view filing) | May 1 | 7 days | Wentworth William O.President | PPurchase | +10.6K | $2.36 | +$25.0K | +43.2%35.1K after | Amended |
| May 7, 2025 (view filing) | May 6 | 1 day | Wentworth William O.President | PPurchase | +10.3K | $2.42 | +$25.0K | +29.4%45.4K after | |
| Aug 29, 2024 (view filing) | Aug 26 | 3 daysLate | Brown Douglas WellsDirector | PPurchase | +3.00K | $2.66 | +$7.98K | +3.8%81.5K after | |
| Nov 1, 2021 (view filing) | Nov 1 | Same day | Ambrose AnthonyPresident | SSale | −10.6K | $5.31 | −$56.0K | −2.7%378.7K after | |
| Oct 4, 2021 (view filing) | Oct 1-4 | 3 days | Ambrose AnthonyPresident | SSale | −7.92K | $6.30 | −$49.9K | −2.0%389.2K after | 2 lots |
| Sep 14, 2021 (view filing) | Sep 10-14 | 4 days | Gulati RajeevVice President CTO | SSale | −7.56K | $6.68 | −$50.5K | −5.4%131.7K after | 3 lots |
| Sep 9, 2021 (view filing) | Sep 9 | Same day | Brown Douglas WellsDirector | SSale | −12.0K | $7.28 | −$87.4K | −21.4%44.2K after |
Top 10 13F holders, Q2 2026
See all 35 holdersThe largest institutional positions in Data I/O Corp at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Kanen Wealth Management LLC | 839,421 | $3.29M | 0.80% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 392,443 | $1.55M | 0.00% | −15,200−3.7% | Reduced |
| Penbrook Management LLC | 355,850 | $1.40M | 0.89% | −1,000−0.3% | Reduced |
| Vanguard Capital Management LLC | 323,672 | $1.28M | 0.00% | +24,275+8.1% | Added |
| Kovack Advisors, Inc. | 285,481 | $1.11M | 0.05% | +17,500+6.5% | Added |
| Dimensional Fund Advisors LP | 140,679 | $554.3K | 0.00% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 115,057 | $453.4K | 0.00% | +28,190+32.5% | Added |
| Acadian Asset Management LLC | 108,582 | $427.0K | 0.00% | −15,537−12.5% | Reduced |
| Citadel Advisors LLC | 86,869 | $342.3K | 0.00% | +86,869 | New |
| Essex Investment Management Co LLC | 74,558 | $293.8K | 0.04% | −83−0.1% | Reduced |
Holders of 5% or more of DAIO
See all 3 holders and filingsHolders whose latest Schedule 13D or 13G filing reports 5% or more of Data I/O Corp.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Red Oak Partners, LLC | 13G | 11.20%1.49M shares | New | Oct 27, 20261 filing | Oct 27, 2026 | SEC |
| Lytton Laurence W | 13G | 9.90%1.03M shares | New | Jun 23, 20261 filing | Jun 23, 2026 | SEC |
| Philotimo Fund, LP | 13G/A | 9.10%839.4K shares | – | Nov 16, 20216 filings | May 22, 2025 | SEC |