DAIO · NASDAQ · Hardware, Equipment & Parts

Data I/O (DAIO)

Provides programming and security-deployment systems for electronics manufacturing.

$2.88
After hours−0.02 (−0.69%)
At close$2.90(0.00%)

13F · 13D/G · Form 4

Institutions30.28%3.11M shares
35 holders · as of Jun 30, 2026
Insiders23.63%2.43M shares
10 holders · as of Sep 3, 2026
Other46.09%4.73M shares
remainder

10.26M company shares as of Aug 28, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

13F · 13D/G · Form 4

HolderStakeSharesDate
Lytton Laurence W.Insider
10.00%1.03Mfiled Jun 23, 2026
Kanen Wealth Management LLCInstitution
8.18%839,421as of Jun 30, 2026
David L. KanenInsider
8.05%826,421filed Jan 5, 2024
Philotimo Fund, LPInstitution
4.75%487,127filed May 22, 2025
Renaissance Technologies LLCInstitution
3.82%392,443as of Jun 30, 2026
Penbrook Management LLCInstitution
3.47%355,850as of Jun 30, 2026
Vanguard Capital Management LLCInstitution
3.15%323,672as of Jun 30, 2026
Kovack Advisors, Inc.Institution
2.78%285,481as of Jun 30, 2026
Dimensional Fund Advisors LPInstitution
1.37%140,679as of Jun 30, 2026
Geode Capital Management, LLCInstitution
1.12%115,057as of Jun 30, 2026
Acadian Asset Management LLCInstitution
1.06%108,582as of Jun 30, 2026
Douglas Wells BrownInsiderdirector
0.99%101,759filed May 19, 2025
Charles Joseph DiBonaInsiderofficer: Vice President & CFO
0.87%89,655filed Sep 3, 2026
Sally A. WashlowInsiderdirector
0.87%88,911filed Jul 10, 2026
Gerald Yat NgInsiderofficer: Vice President CFO
0.86%88,191filed Feb 12, 2025
Citadel Advisors LLCInstitution
0.85%86,869as of Jun 30, 2026
Edward J. SmithInsiderdirector
0.77%79,375filed Jul 10, 2026
Essex Investment Management Co LLCInstitution
0.73%74,558as of Jun 30, 2026
Vanguard Fiduciary Trust CoInstitution
0.57%58,643as of Jun 30, 2026
William O. WentworthInsiderdirector, officer: President
0.53%53,972filed Dec 5, 2025
Susquehanna International Group, LLPInstitution
0.47%48,548as of Jun 30, 2026
Garrett Riley LarsonInsiderdirector
0.46%46,832filed Jul 10, 2026
Steward Partners Investment Advisory, LLCInstitution
0.42%43,472as of Jun 30, 2026
Steven M. WaszakInsiderdirector
0.24%24,210filed Jul 10, 2026
Thompson Davis & Co., Inc.Institution
0.23%23,533as of Jun 30, 2026

13F, as of Jun 30, 2026

35 holders · 3.11M shares · 8 new positions · 18 increased · 6 reduced · 2 closed

HolderShares% outstandingChg q/qFiled
Kanen Wealth Management LLC839.4K8.18%0Aug 13, 2026
Renaissance Technologies LLC392.4K3.82%−15.2KAug 13, 2026
Penbrook Management LLC355.9K3.47%−1.0KJul 23, 2026
Vanguard Capital Management LLC323.7K3.15%+24.3KAug 13, 2026
Kovack Advisors, Inc.285.5K2.78%+17.5KJul 29, 2026
Dimensional Fund Advisors LP140.7K1.37%0Aug 11, 2026
Geode Capital Management, LLC115.1K1.12%+28.2KAug 12, 2026
Acadian Asset Management LLC108.6K1.06%−15.5KAug 13, 2026

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Lytton Laurence W9.90%1.03M13GJun 23, 2026
Philotimo Fund, LP5.30%487.1K13GMay 22, 2025

Form 4

Latest trades

No open-market trades in the last 12 months.

House and Senate disclosures

Not reported.