Data I/ODAIO
13F holders, Q2 2026 (June 30)At the end of Q2 2026, 35 institutions reported holding Data I/O Corp. (DAIO) in their 13F filings, up 6 from Q1 2026. 9 opened new positions and 3 sold out. The largest holders were Kanen Wealth Management LLC ($3.3M), Renaissance Technologies ($1.5M) and Penbrook Management LLC ($1.4M). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Data I/O Corp.
- CUSIP
- 237690102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 9 | $640K |
| Exits | 3 | $35K |
All 13F filers, Q1 2026 → Q2 2026: 286,399 shares bought and 48,756 shares sold, net +237,643 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 35 holders
| Kanen Wealth Management LLC | 0.80% | No change | 839,421 | $3.3M |
| Renaissance Technologies | 0.00% | Reduce -3.7% | 392,443 | $1.5M |
| Penbrook Management LLC | 0.89% | Reduce -0.3% | 355,850 | $1.4M |
| Vanguard Capital Management LLC | 0.00% | Add +8.1% | 323,672 | $1.3M |
| Kovack Advisors, Inc. | 0.05% | Add +6.5% | 285,481 | $1.1M |
| Dimensional Fund Advisors LP | 0.00% | No change | 140,679 | $554K |
| Geode Capital Management, LLC | 0.00% | Add +32.5% | 115,057 | $453K |
| Acadian Asset Management LLC | 0.00% | Reduce -12.5% | 108,582 | $427K |
| Citadel Advisors | 0.00% | New | 86,869 | $342K |
| Essex Investment Management Co. LLC | 0.04% | Reduce -0.1% | 74,558 | $294K |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +27.9% | 58,643 | $231K |
| Susquehanna International Group, LLP | 0.00% | Add +80.9% | 48,548 | $191K |
| Steward Partners Investment Advisory, LLC | 0.00% | No change | 43,472 | $171K |
| Thompson Davis & Co., Inc. | 0.06% | New | 23,533 | $93K |
| James Investment Research, Inc. | 0.01% | No change | 22,402 | $88K |
| NewEdge Advisors, LLC | 0.00% | No change | 22,402 | $88K |
| Northern Trust Corp. | 0.00% | Add +62.0% | 21,827 | $86K |
| LPL Financial LLC | 0.00% | Reduce -6.8% | 21,000 | $83K |
| Jane Street Group, LLC | 0.00% | New | 17,727 | $70K |
| Legato Capital Management LLC | 0.01% | No change | 17,550 | $69K |
| BlackRock, Inc. | 0.00% | No change | 17,015 | $67K |
| State Street Corp. | 0.00% | No change | 16,170 | $64K |
| XTX Topco Ltd | 0.00% | New | 15,284 | $60K |
| HRT Financial LP | 0.00% | New | 11,288 | $44K |
| Citigroup Inc. | 0.00% | New | 7,176 | $28K |
| Group One Trading LLC | 0.00% | Add +6350.0% | 6,450 | $25K |
| Vanguard Global Advisers, LLC | 0.00% | No change | 5,124 | $20K |
| Simplex Trading, LLC | 0.00% | Add +55.1% | 4,279 | $17K |
| UBS Group AG | 0.00% | Add +348.7% | 4,222 | $17K |
| Point Nemo Capital, LLC | 0.00% | New | 500 | $2K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -81.3% | 314 | $1K |
| Barclays PLC | 0.00% | New | 50 | $197 |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 4 | $16 |
| Huntington National Bank | 0.00% | No change | 1 | $4 |
| SBI Securities Co., Ltd. | 0.00% | No change | 1 | $4 |
"% of holder's portfolio" is DAIO's weight in each manager's 13F, not the share of Data I/O Corp. the manager owns.