Ticker · CUSIP 237690102

DAIO

DATA I O CORP
···Share
Holders (tracked)
3
Combined shares
864,319
Combined value
$2.74M
Last close
$2.57
Quarter
2025Q4
Price · 1Y$2.57+0.58 (+29.15%)H $3.50 · L $1.99 · Avg Vol 33K
$2.00$2.50$3.00$3.50VolJul 25Oct 25Jan 26Apr 26
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
342024Q12025Q4
Price is -18.9% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

3 events
  1. Ken Griffin (Citadel Advisors) trimmed2026-02-17
    −8,690 shares · 2025Q4
    Position
  2. Renaissance Technologies trimmed2026-02-12
    −39,197 shares · 2025Q4
    Position
  3. Renaissance Technologies added2025-11-13
    +491 shares · 2025Q3
    Position

Insider activity

No insider transactions in the last 30 days.
View full insider history for DAIO →
Follow-the-investor returns
If you'd copied each holder of DAIO…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
Ken Griffin (Citadel Advisors)2019Q1$3.17-18.9%$1.0M
Ken Griffin (Citadel Advisors)2019Q1$3.17-18.9%$1.0M
Renaissance Technologies2016Q1$4.89-47.4%$1.1M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to0
—
Trimmed2
Exited0
—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
2
$2.7M
2022Q2
2
$1.9M
2022Q3
2
$1.6M
2022Q4
6
$2.4M
2023Q1
6
$2.9M
2023Q2
6
$2.6M
2023Q3
5
$2.2M
2023Q4
4
$1.8M
2024Q1
4
$2.1M
2024Q2
4
$1.6M
2024Q3
2
$1.4M
2024Q4
4
$1.5M
2025Q1
4
$1.3M
2025Q2
2
$1.6M
2025Q3
3
$2.0M
2025Q4
3
$2.7M

Who owns DAIO

3 super-investors · 2025Q4
Tracked stake
864.3K
shares
Combined value
$3M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Trim3
#ManagerSharesValue
1Renaissance Technologies437.6K$1M
2Ken Griffin
Citadel Advisors
393.8K$1M
3Ken Griffin
Citadel Advisors
32.9K$104K

Recent moves

20 transactions
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