Data I/ODAIO
13F holders, Q1 2026 (March 31)29holders +2
4new positions
4sold out
1famous investor
$2.51avg. 13F price*
At the end of Q1 2026, 29 institutions reported holding Data I/O Corp. (DAIO) in their 13F filings, up 2 from Q4 2025. 4 opened new positions and 4 sold out. The largest holders were Kanen Wealth Management LLC ($2.1M), Renaissance Technologies ($1.0M) and Penbrook Management LLC ($903K). One famous investor held it Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Data I/O Corp.
- CUSIP
- 237690102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 4 | $95K |
| Exits | 4 | $143K |
All 13F filers, Q4 2025 → Q1 2026: 49,367 shares bought and 134,613 shares sold, net −85,246 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 29 holders
| Kanen Wealth Management LLC | 0.76% | No change | 839,421 | $2.1M |
| Renaissance Technologies | 0.00% | Reduce -6.8% | 407,643 | $1.0M |
| Penbrook Management LLC | 0.68% | No change | 356,850 | $903K |
| Vanguard Capital Management LLC | 0.00% | — | 299,397 | $757K |
| Kovack Advisors, Inc. | 0.03% | Reduce -0.3% | 267,981 | $635K |
| Dimensional Fund Advisors LP | 0.00% | Reduce -21.9% | 140,679 | $356K |
| Acadian Asset Management LLC | 0.00% | Reduce -0.9% | 124,119 | $313K |
| Geode Capital Management, LLC | 0.00% | Reduce -16.9% | 86,867 | $220K |
| Essex Investment Management Co. LLC | 0.03% | No change | 74,641 | $189K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 45,853 | $116K |
| Steward Partners Investment Advisory, LLC | 0.00% | No change | 43,472 | $110K |
| Susquehanna International Group, LLP | 0.00% | Add +71.0% | 26,837 | $68K |
| LPL Financial LLC | 0.00% | New | 22,545 | $57K |
| James Investment Research, Inc. | 0.01% | No change | 22,402 | $57K |
| NewEdge Advisors, LLC | 0.00% | No change | 22,402 | $57K |
| Legato Capital Management LLC | 0.00% | No change | 17,550 | $44K |
| BlackRock, Inc. | 0.00% | No change | 17,015 | $43K |
| State Street Corp. | 0.00% | No change | 16,170 | $41K |
| Goldman Sachs Group Inc. | 0.00% | New | 13,788 | $35K |
| Northern Trust Corp. | 0.00% | No change | 13,476 | $34K |
| Vanguard Global Advisers, LLC | 0.00% | — | 5,124 | $13K |
| Simplex Trading, LLC | 0.00% | Add +42.8% | 2,759 | $7K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -21.1% | 1,681 | $4K |
| UBS Group AG | 0.00% | New | 941 | $2K |
| Bard Associates Inc. | 0.00% | No change | 100 | $253 |
| Group One Trading LLC | 0.00% | New | 100 | $253 |
| Huntington National Bank | 0.00% | No change | 1 | $3 |
| SBI Securities Co., Ltd. | 0.00% | No change | 1 | $3 |
| Royal Bank of Canada | 0.00% | Add +23.6% | 136 | $0 |
"% of holder's portfolio" is DAIO's weight in each manager's 13F, not the share of Data I/O Corp. the manager owns.