Data I/O Corp
DAIO- Exchange
- Nasdaq
- Industry
- Instruments For Meas & Testing of Electricity & Elec Signals
- SEC CIK
- 0000351998
No open-market purchases or sales by Data I/O Corp insiders were filed in the last 90 days; 35 institutions reported holding it in 13F filings for Q2 2026, worth $12.2M in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Data I/O Corp as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 27
- +1 vs. Q3 2025
- Shares held
- 2.96M
- −236.1K (−7.4%) vs. Q3 2025
- Total value
- $8.44M
- −$2.23M (−20.9%) vs. Q3 2025
- New holders
- 3
- 8 more added
- Sold out
- 2
- 7 more reduced
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting DAIO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 35 | $12.2M |
| Q1 2026 | 29 | $7.22M |
| Q4 2025 | 27 | $8.44M |
| Q3 2025 | 26 | $10.7M |
| Q2 2025 | 26 | $9.93M |
| Q1 2025 | 26 | $7.51M |
| Q4 2024 | 29 | $8.69M |
| Q3 2024 | 29 | $8.14M |
| Q2 2024 | 32 | $9.06M |
| Q1 2024 | 32 | $11.8M |
| Q4 2023 | 30 | $8.39M |
| Q3 2023 | 29 | $12.8M |
| Q2 2023 | 29 | $14.4M |
| Q1 2023 | 30 | $16.2M |
| Q4 2022 | 30 | $11.1M |
| Q3 2022 | 28 | $8.94M |
| Q2 2022 | 28 | $10.3M |
| Q1 2022 | 29 | $14.0M |
| Q4 2021 | 29 | $14.8M |
| Q3 2021 | 32 | $23.4M |
| Q2 2021 | 30 | $24.7M |
| Q1 2021 | 30 | $18.6M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Data I/O Corp; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Kanen Wealth Management LLC | 839,421 | $1.73M | 0.54% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 437,637 | $1.39M | 0.00% | −39,197−8.2% | Reduced |
| Penbrook Management LLC | 356,850 | $1.13M | 0.78% | +4,100+1.2% | Added |
| Vanguard Group Inc | 350,374 | $1.11M | 0.00% | −8,084−2.3% | Reduced |
| Kovack Advisors, Inc. | 268,906 | $852.4K | 0.04% | +5,675+2.2% | Added |
| Dimensional Fund Advisors LP | 180,249 | $571.4K | 0.00% | −80,876−31.0% | Reduced |
| Acadian Asset Management LLC | 125,219 | $396.0K | 0.00% | −8,002−6.0% | Reduced |
| Geode Capital Management, LLC | 104,582 | $331.6K | 0.00% | +2,967+2.9% | Added |
| Essex Investment Management Co LLC | 74,641 | $236.6K | 0.04% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 43,472 | $137.8K | 0.00% | +8,555+24.5% | Added |
| Citadel Advisors LLC | 32,882 | $104.2K | 0.00% | −8,690−20.9% | Reduced |
| James Investment Research Inc | 22,402 | $71.0K | 0.01% | 00.0% | Unchanged |
| GWM Advisors LLC | 22,402 | $71.0K | 0.00% | 00.0% | Unchanged |
| Legato Capital Management LLC | 17,550 | $55.6K | 0.00% | 00.0% | Unchanged |
| BlackRock, Inc. | 17,015 | $53.9K | 0.00% | 00.0% | Unchanged |
| State Street Corp | 16,170 | $51.3K | 0.00% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 15,697 | $49.8K | 0.00% | +269+1.7% | Added |
| Northern Trust Corp | 13,476 | $42.7K | 0.00% | −5,630−29.5% | Reduced |
| DRW Securities, LLC | 11,731 | $37.2K | 0.00% | +11,731 | New |
| Tower Research Capital LLC (TRC) | 2,131 | $6.75K | 0.00% | +1,100+106.7% | Added |
| Simplex Trading, LLC | 1,932 | $6.12K | 0.00% | −880−31.3% | Reduced |
| Capital Analysts, LLC | 159 | $1.00K | 0.00% | +159 | New |
| Bard Associates Inc | 100 | $317 | 0.00% | +100 | New |
| Bank of America Corp | 87 | $275 | 0.00% | +2+2.4% | Added |
| Huntington National Bank | 1 | $3 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 1 | $3 | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 110 | $0 | 0.00% | +96+685.7% | Added |
| Bank of New York Mellon Corp | 0 | $0 | 0.00% | −116,751−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −2,716−100.0% | Sold out |