DATA I/O CORP - DAIO
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Kanen Wealth Management LLC | History | No change | 839,421 | 2,123 | 0.76% | 0.53% | 1 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| VANGUARD GROUP INC | History | No change | 350,374 | 1,110 | 0.0% | 0.0% | 2 | 0 | 0.0% | Q4 2025 | Jan 29, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Reduced | 407,643 | 1,031 | 0.0% | 0.0% | 3 | -29,994 | -6.85% | Q1 2026 | May 14, 2026 |
| Penbrook Management LLC | History | No change | 356,850 | 902 | 0.68% | 0.78% | 4 | 0 | 0.0% | Q1 2026 | Apr 21, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | History | New | 299,397 | 757 | 0.0% | — | 5 | +299,397 | New | Q1 2026 | May 15, 2026 |
| Kovack Advisors, Inc. | History | Reduced | 267,981 | 635 | 0.03% | 0.04% | 6 | -925 | -0.34% | Q1 2026 | May 12, 2026 |
| DIMENSIONAL FUND ADVISORS LP | History | Reduced | 140,679 | 355 | 0.0% | 0.0% | 7 | -39,570 | -21.95% | Q1 2026 | May 07, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | History | Reduced | 124,119 | 313 | 0.0% | 0.0% | 8 | -1,100 | -0.88% | Q1 2026 | May 13, 2026 |
| CITADEL ADVISORS LLC | History | Reduced | 107,400 | 271 | 0.0% | 0.0% | 9 | -319,282 | -74.83% | Q1 2026 | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Reduced | 86,867 | 219 | 0.0% | 0.0% | 10 | -17,715 | -16.94% | Q1 2026 | May 15, 2026 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | History | No change | 74,641 | 188 | 0.03% | 0.04% | 11 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| VANGUARD FIDUCIARY TRUST CO | History | New | 45,853 | 116 | 0.0% | — | 12 | +45,853 | New | Q1 2026 | May 08, 2026 |
| Steward Partners Investment Advisory, LLC | History | No change | 43,472 | 109 | 0.0% | 0.0% | 13 | 0 | 0.0% | Q1 2026 | May 08, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Added to | 26,837 | 67 | 0.0% | 0.0% | 14 | +11,140 | 70.97% | Q1 2026 | May 15, 2026 |
| LPL Financial LLC | History | New | 22,545 | 57 | 0.0% | — | 15 | +22,545 | New | Q1 2026 | May 06, 2026 |
| JAMES INVESTMENT RESEARCH, INC. | History | No change | 22,402 | 56 | 0.01% | 0.01% | 16 | 0 | 0.0% | Q1 2026 | Apr 24, 2026 |
| Legato Capital Management LLC | History | No change | 17,550 | 44 | 0.0% | 0.0% | 17 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| BlackRock, Inc. | History | No change | 17,015 | 43 | 0.0% | 0.0% | 18 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| STATE STREET CORP | History | No change | 16,170 | 40 | 0.0% | 0.0% | 19 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | History | New | 13,788 | 34 | 0.0% | — | 21 | +13,788 | New | Q1 2026 | May 15, 2026 |
| NORTHERN TRUST CORP | History | No change | 13,476 | 34 | 0.0% | 0.0% | 20 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| NewEdge Advisors, LLC | History | No change | 22,402 | 22 | 0.0% | 0.0% | 22 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Vanguard Global Advisers, LLC | History | New | 5,124 | 12 | 0.0% | — | 23 | +5,124 | New | Q1 2026 | May 08, 2026 |
| SIMPLEX TRADING, LLC | History | Added to | 2,759 | 6 | 0.0% | 0.0% | 24 | +827 | 42.81% | Q1 2026 | May 14, 2026 |
| Tower Research Capital LLC (TRC) | History | Reduced | 1,681 | 4 | 0.0% | 0.0% | 25 | -450 | -21.12% | Q1 2026 | May 15, 2026 |
| UBS Group AG | History | New | 941 | 2 | 0.0% | — | 26 | +941 | New | Q1 2026 | May 05, 2026 |
| DRW Securities, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -11,731 | -100.0% | Q1 2026 | May 13, 2026 |
| Capital Analysts, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -159 | -100.0% | Q1 2026 | May 14, 2026 |
| GROUP ONE TRADING LLC | History | New | 100 | 0 | — | — | — | +100 | New | Q1 2026 | May 13, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Closed out | 0 | 0 | — | — | — | -87 | -100.0% | Q1 2026 | May 15, 2026 |
| ROYAL BANK OF CANADA | History | Added to | 136 | 0 | — | — | — | +26 | 23.64% | Q1 2026 | May 15, 2026 |
| HUNTINGTON NATIONAL BANK | History | No change | 1 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| BARD ASSOCIATES INC | History | No change | 100 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 07, 2026 |
| SBI Securities Co., Ltd. | History | No change | 1 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Apr 27, 2026 |