Data I/ODAIO
13F holders, Q1 2025 (March 31)At the end of Q1 2025, 26 institutions reported holding Data I/O Corp. (DAIO) in their 13F filings, down 3 from Q4 2024. 1 opened new positions and 4 sold out. The largest holders were Kanen Wealth Management LLC ($2.1M), Renaissance Technologies ($1.2M) and Vanguard Group Inc. ($878K). 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 Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 1 | $5K |
| Exits | 4 | $183K |
All 13F filers, Q4 2024 → Q1 2025: 21,743 shares bought and 93,851 shares sold, net −72,108 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 26 holders
| Kanen Wealth Management LLC | 0.83% | No change | 839,421 | $2.1M |
| Renaissance Technologies | 0.00% | Reduce -4.8% | 479,615 | $1.2M |
| Vanguard Group Inc. | 0.00% | Reduce -0.4% | 358,458 | $878K |
| Kovack Advisors, Inc. | 0.07% | Add +0.8% | 282,006 | $691K |
| Penbrook Management LLC | 0.50% | Reduce -0.7% | 269,450 | $660K |
| Dimensional Fund Advisors LP | 0.00% | Add +3.4% | 257,352 | $631K |
| Acadian Asset Management LLC | 0.00% | No change | 146,540 | $358K |
| Bank of New York Mellon Corp | 0.00% | No change | 116,751 | $286K |
| Geode Capital Management, LLC | 0.00% | Add +1.3% | 97,734 | $240K |
| Essex Investment Management Co. LLC | 0.02% | Add +11.8% | 43,691 | $107K |
| Citadel Advisors | 0.00% | Add +8.2% | 41,221 | $101K |
| Bard Associates Inc. | 0.02% | No change | 22,188 | $54K |
| BlackRock, Inc. | 0.00% | No change | 17,015 | $42K |
| State Street Corp. | 0.00% | No change | 16,170 | $40K |
| Northern Trust Corp. | 0.00% | No change | 16,024 | $39K |
| Salem Investment Counselors Inc. | 0.00% | No change | 15,796 | $39K |
| James Investment Research, Inc. | 0.00% | No change | 15,402 | $38K |
| NewEdge Advisors, LLC | 0.00% | No change | 15,402 | $38K |
| Legato Capital Management LLC | 0.00% | No change | 10,676 | $26K |
| Simplex Trading, LLC | 0.00% | New | 2,194 | $5K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -4.5% | 1,607 | $4K |
| Caldwell Sutter Capital, Inc. | 0.00% | No change | 588 | $1K |
| Bank of America Corp. | 0.00% | Add +4.5% | 70 | $172 |
| JPMorgan Chase & Co. | 0.00% | Reduce -10.5% | 17 | $42 |
| Huntington National Bank | 0.00% | No change | 1 | $2 |
| SBI Securities Co., Ltd. | 0.00% | No change | 1 | $2 |
"% of holder's portfolio" is DAIO's weight in each manager's 13F, not the share of Data I/O Corp. the manager owns.