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$DAIO
$2.52 +$0.08 (3.28%) Close

Ownership

13F as of Q2 2026 · 10.4M shares outstanding

Who owns DAIO?

By type of holder
Institutions 29.4% Insiders 8.3% Everyone else 62.3%
Concentration Top 10 holders own 26.5%
Kanen Wealth Management LLC 8.1% · Renaissance Technologies LLC 3.8%
Institutional ownership
29.4%
+1.8 pts vs last qtr
Institutional holders
34
+5 vs last qtr
Net shares bought
+189.1K
by institutions in Q2 2026
New / sold out
9 / 4
positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026
  • Citadel Advisors LLC NEW +86.9K
  • Geode Capital Management, LLC +28.2K

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Biggest sellers in Q2 2026
  • Susquehanna International Group, LLP SOLD OUT −26.8K
  • Acadian Asset Management LLC −15.5K

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Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Data I/O Corp in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2016–FY2025
+114619.6%
+118.76% a year
Each share's claim on the business
−99.9%
shrank without buying or selling a share
Spent on buybacks vs paid in stock
$1.66M vs $10.4M
over 10 fiscal years
Diluted shares, split-adjusted
7.9K4.7M9.4M2016: 8.1K shares'162017: 8.4K shares'172018: 8.5K shares'182019: 8.2K shares'192020: 8.3M shares'202021: 8.5M shares'212022: 8.7K shares'222023: 9.1M shares'232024: 9.2M shares'242025: 9.3M shares'25
Buybacks Stock-based comp
$0$733.5K$1.5M2016 buybacks: $191.0K2016 stock comp: $520.0K'162017 buybacks: $02017 stock comp: $714.0K'172018 buybacks: $02018 stock comp: $1.2M'182019 buybacks: $1.5M2019 stock comp: $1.2M'192020 buybacks: $02020 stock comp: $1.5M'202021 buybacks: $02021 stock comp: $1.2M'212022 buybacks: $02022 stock comp: $1.2M'222023 buybacks: $02023 stock comp: $1.2M'232024 buybacks: $02024 stock comp: $977.0K'242025 buybacks: $02025 stock comp: $697.0K'25

How patient are the owners?

Institutional shares by how long they've been held
5+ years89% 3–5 years3% 1–3 years2% Under 1 year6%
Quarterly turnover
5.9%
of institutional shares changed hands
Top 10 managers, median time held
5 years

Super Investors

Investment managers reporting DAIO on Form 13F
KW
Kanen Wealth Management LLC
Shares
839.4K
% of company
8.07%
Change vs last qtr
Unchanged
Held since
≤2021
RT
Renaissance Technologies LLC
Shares
392.4K
% of company
3.78%
Change vs last qtr
−15.2K (−3.7%)
Held since
≤2021

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Institutional Funds

Mutual funds and ETFs reporting DAIO on Form N-PORT; together they hold 8.1% of the company
PF
Philotimo Focused Growth & Income
World Funds Trust
Position value
$1.29M
% of company
3.15%
% of the fund
0.94%
As of
June 30, 2026
VT
Vanguard Total Stock Market Index Fund
Vanguard Index Funds
Position value
$844K
% of company
2.06%
% of the fund
0.00%
As of
June 30, 2026

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Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G
BD
Brown Douglas Wells
Insider
Shares
101.8K
% of company
0.98%
Change vs last qtr
—
Held since
—
DC
DiBona Charles Joseph
Insider
Shares
89.7K
% of company
0.86%
Change vs last qtr
—
Held since
—

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