Ticker · CUSIP 237690102

DAIO

DATA I O CORP
···Share
Holders (tracked)
3
Combined shares
864,319
Combined value
$2.74M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
342024Q12025Q4

SEC event timeline

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

Insider activity

No insider transactions in the last 30 days.
View full insider history for DAIO →

Who moved on this name in 2025Q4

13F transactions 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
$2K
2022Q4
6
$168K
2023Q1
6
$191K
2023Q2
6
$318K
2023Q3
5
$201K
2023Q4
4
$206K
2024Q1
4
$245K
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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