DATA I/O CORP (DAIO) Institutional Shareholders
DATA I/O CORP (DAIO) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $12.21M in DAIO holdings during the latest filing period.
Kanen Wealth Management Llc is currently the largest disclosed institutional shareholder of DAIO tracked by InsiderSet, reporting ownership valued at approximately $3.29M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $2.36M, representing an estimated loss of -28.25% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 88% of the total disclosed DAIO value among the investors covered in this analysis. Major shareholders include Kanen Wealth Management Llc, Renaissance Technologies LLC, Penbrook Management Llc, and several other long-term asset managers with concentrated positions in DATA I/O CORP (DAIO).
This page ranks the largest institutional DAIO shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
35
Total Reported Value
$12.21M
Largest Holder
Kanen Wealth Management Llc
Largest Position
$3.29M
Insider Transactions (90d)
5
Latest Filing Quarter
Q2 2026
New Institutional Positions
41
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Kanen Wealth Management Llc | 0.80% | 839,421 | $3,287,675 | $2,358,773 | -$928,902 | -28.25% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 392,443 | $1,546,225 | $1,102,765 | -$443,460 | -28.68% |
| Penbrook Management Llc | 0.89% | 355,850 | $1,402,049 | $999,939 | -$402,111 | -28.68% | |
| Vanguard Capital Management Llc | 0.00% | 323,672 | $1,275,268 | $909,518 | -$365,750 | -28.68% | |
| Kovack Advisors, Inc. | 0.05% | 285,481 | $1,107,666 | $802,202 | -$305,464 | -27.58% | |
| Dimensional Fund Advisors Lp | 0.00% | 140,679 | $554,276 | $395,308 | -$158,968 | -28.68% | |
| Geode Capital Management, Llc | 0.00% | 115,057 | $453,420 | $323,310 | -$130,110 | -28.70% | |
| Acadian Asset Management Llc | 0.00% | 108,582 | $427,000 | $305,115 | -$121,885 | -28.54% | |
| Citadel Advisors Llc | 0.00% | 86,869 | $342,264 | $244,102 | -$98,162 | -28.68% | |
| Essex Investment Management Co Llc | 0.04% | 74,558 | $293,759 | $209,508 | -$84,251 | -28.68% | |
| Vanguard Fiduciary Trust Co | 0.00% | 58,643 | $231,053 | $164,787 | -$66,266 | -28.68% | |
| Susquehanna International Group, Llp | 0.00% | 48,548 | $191,279 | $136,420 | -$54,859 | -28.68% | |
| Steward Partners Investment Advisory, Llc | 0.00% | 43,472 | $171,280 | $122,156 | -$49,124 | -28.68% | |
| Thompson Davis & Co., Inc. | 0.06% | 23,533 | $92,720 | $66,128 | -$26,592 | -28.68% | |
| James Investment Research, Inc. | 0.01% | 22,402 | $88,264 | $62,950 | -$25,314 | -28.68% | |
| Newedge Advisors, Llc | 0.00% | 22,402 | $88,264 | $62,950 | -$25,314 | -28.68% | |
| Northern Trust Corp | 0.00% | 21,827 | $85,998 | $61,334 | -$24,664 | -28.68% | |
| Lpl Financial Llc | 0.00% | 21,000 | $82,740 | $59,010 | -$23,730 | -28.68% | |
| Jane Street Group, Llc | 0.00% | 17,727 | $69,844 | $49,813 | -$20,031 | -28.68% | |
| Legato Capital Management Llc | 0.01% | 17,550 | $69,147 | $49,316 | -$19,832 | -28.68% | |
| Blackrock, Inc. | 0.00% | 17,015 | $67,039 | $47,812 | -$19,227 | -28.68% | |
| State Street Corp | 0.00% | 16,170 | $63,710 | $45,438 | -$18,272 | -28.68% | |
| Xtx Topco Ltd | 0.00% | 15,284 | $60,219 | $42,948 | -$17,271 | -28.68% | |
| Hrt Financial Lp | 0.00% | 11,288 | $44,000 | $31,719 | -$12,281 | -27.91% | |
| Citigroup Inc | 0.00% | 7,176 | $28,273 | $20,165 | -$8,108 | -28.68% | |
| Group One Trading Llc | 0.00% | 6,450 | $25,413 | $18,125 | -$7,289 | -28.68% | |
| Vanguard Global Advisers, Llc | 0.00% | 5,124 | $20,189 | $14,398 | -$5,791 | -28.68% | |
| Simplex Trading, Llc | 0.00% | 4,279 | $16,859 | $12,024 | -$4,835 | -28.68% | |
| Ubs Group Ag | 0.00% | 4,222 | $16,635 | $11,864 | -$4,771 | -28.68% | |
| Point Nemo Capital, Llc | 0.00% | 500 | $1,970 | $1,405 | -$565 | -28.68% | |
| Tower Research Capital Llc (Trc) | 0.00% | 314 | $1,237 | $882 | -$355 | -28.67% | |
| Barclays Plc | 0.00% | 50 | $197 | $141 | -$57 | -28.68% | |
| Caitong International Asset Management Co., Ltd | 0.00% | 4 | $16 | $11 | -$5 | -29.75% | |
| Huntington National Bank | 0.00% | 1 | $4 | $3 | -$1 | -29.75% | |
| Sbi Securities Co., Ltd. | 0.00% | 1 | $4 | $3 | -$1 | -29.75% |
Frequently asked questions about DAIO
Who owns the most DAIO stock?
The largest holders of DAIO are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for DATA I/O CORP (DAIO).
Is DAIO widely held by superinvestors?
Many widely followed stocks like DAIO appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly DAIO is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.