DATA I/O CORP (DAIO) — Institutional Holders, Q2 2026
35 institutional investment managers reported a DAIO position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $12.2M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
DAIO in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- CITADEL ADVISORSNew · +86,869 sh+$342.3K
- GEODE CAPITAL MANAGEMENTAdded · +28,190 sh+$111.1K
- VANGUARD CAPITAL MANAGEMENTAdded · +24,275 sh+$95.6K
- THOMPSON DAVISNew · +23,533 sh+$92.7K
- SUSQUEHANNA INTERNATIONAL GROUP, LLPAdded · +21,711 sh+$85.5K
Biggest sellers
- ACADIAN ASSET MANAGEMENTTrimmed · -15,537 sh-$61.2K
- RENAISSANCE TECHNOLOGIESTrimmed · -15,200 sh-$59.9K
- GOLDMAN SACHS GROUPSold out · -13,788 sh-$54.3K
- LPL FinancialTrimmed · -1,545 sh-$6.1K
- Tower Research Capital (TRC)Trimmed · -1,367 sh-$5.4K
DAIO 13F holders ranked 1–35 of 35
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | Kanen Wealth Management#1 · 839,421 sh | 839,421 | $3.3M | 0.80% | 0.0% |
| 2 | RENAISSANCE TECHNOLOGIES#2 · 392,443 sh | 392,443 | $1.5M | <0.01% | -3.7% |
| 3 | Penbrook Management#3 · 355,850 sh | 355,850 | $1.4M | — | -0.3% |
| 4 | VANGUARD CAPITAL MANAGEMENT#4 · 323,672 sh | 323,672 | $1.3M | 0.00% | +8.1% |
| 5 | Kovack Advisors#5 · 285,481 sh | 285,481 | $1.1M | 0.05% | +6.5% |
| 6 | DIMENSIONAL FUND ADVISORS#6 · 140,679 sh | 140,679 | $554.3K | <0.01% | 0.0% |
| 7 | GEODE CAPITAL MANAGEMENT#7 · 115,057 sh | 115,057 | $453.4K | 0.00% | +32.5% |
| 8 | ACADIAN ASSET MANAGEMENT#8 · 108,582 sh | 108,582 | $427.0K | <0.01% | -12.5% |
| 9 | CITADEL ADVISORS#9 · 86,869 sh | 86,869 | $342.3K | 0.00% | New |
| 10 | ESSEX INVESTMENT MANAGEMENT#10 · 74,558 sh | 74,558 | $293.8K | — | -0.1% |
| 11 | VANGUARD FIDUCIARY#11 · 58,643 sh | 58,643 | $231.1K | <0.01% | +27.9% |
| 12 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#12 · 48,548 sh | 48,548 | $191.3K | 0.00% | +80.9% |
| 13 | Steward Partners Investment Advisory#13 · 43,472 sh | 43,472 | $171.3K | <0.01% | 0.0% |
| 14 | THOMPSON DAVIS#14 · 23,533 sh | 23,533 | $92.7K | 0.06% | New |
| 15 | NewEdge Advisors#15 · 22,402 sh | 22,402 | $88.3K | <0.01% | 0.0% |
| 16 | JAMES INVESTMENT RESEARCH#16 · 22,402 sh | 22,402 | $88.3K | — | 0.0% |
| 17 | NORTHERN#17 · 21,827 sh | 21,827 | $86.0K | 0.00% | +62.0% |
| 18 | LPL Financial#18 · 21,000 sh | 21,000 | $82.7K | 0.00% | -6.9% |
| 19 | JANE STREET GROUP#19 · 17,727 sh | 17,727 | $69.8K | 0.00% | New |
| 20 | Legato Capital Management#20 · 17,550 sh | 17,550 | $69.1K | <0.01% | 0.0% |
| 21 | BlackRock#21 · 17,015 sh | 17,015 | $67.0K | 0.00% | 0.0% |
| 22 | STATE STREET#22 · 16,170 sh | 16,170 | $63.7K | 0.00% | 0.0% |
| 23 | XTX Topco Ltd#23 · 15,284 sh | 15,284 | $60.2K | <0.01% | New |
| 24 | HRT FINANCIAL#24 · 11,288 sh | 11,288 | $44.0K | <0.01% | New |
| 25 | CITIGROUP#25 · 7,176 sh | 7,176 | $28.3K | 0.00% | New |
| 26 | GROUP ONE TRADING, L.P.#26 · 6,450 sh | 6,450 | $25.4K | 0.00% | +6350.0% |
| 27 | Vanguard Global Advisers#27 · 5,124 sh | 5,124 | $20.2K | 0.00% | 0.0% |
| 28 | SIMPLEX TRADING#28 · 4,279 sh | 4,279 | $16.9K | 0.00% | +55.1% |
| 29 | UBS Group AG#29 · 4,222 sh | 4,222 | $16.6K | 0.00% | +348.7% |
| 30 | Point Nemo Capital#30 · 500 sh | 500 | $2.0K | <0.01% | New |
| 31 | Tower Research Capital (TRC)#31 · 314 sh | 314 | $1.2K | 0.00% | -81.3% |
| 32 | BARCLAYS PLC#32 · 50 sh | 50 | $197.00 | 0.00% | New |
| 33 | Caitong International Asset Management , Ltd#33 · 4 sh | 4 | $16.00 | 0.00% | New |
| 34 | SBI Securities , Ltd.#34 · 1 sh | 1 | $4.00 | — | 0.0% |
| 35 | HUNTINGTON NATIONAL BANK#35 · 1 sh | 1 | $4.00 | 0.00% | 0.0% |
Funds that sold out of DAIO in Q2 2026 (3)
Held DAIO at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| GOLDMAN SACHS GROUP13,788 sh | 13,788 | $34.9K |
| BARD ASSOCIATES100 sh | 100 | $253.00 |
| ROYAL BANK OF CANADA136 sh | 136 | $0.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.