Security Snapshot

DATA I/O CORP - Common Stock (DAIO) Institutional Ownership

CUSIP: 237690102

13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026

13F reference period

Q2 2026

Institutions Reporting

35

Shares (Excl. Options)

3.11MFull value: 3,107,594 · shares · 30 Jun 2026

Price

$3.94

The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.

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Security type / class
Equity / Common Stock
Symbol
DAIO on Nasdaq
All holders as of 30 Jun 2026
Q2 2026
Total 13F shares
3,107,594
Latest holder snapshot 5 signals
Total 13F value
$12,205,956
Portfolio coverage rank
0%
Share change
+237,779
Value change
+$955,048
Number of holders
35
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
13,326,214
SEC-reported price per share
$2.93
Insider filing price
$2.93
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source

Key facts

  • DAIO - DATA I/O CORP - Common Stock is tracked under CUSIP 237690102.
  • 35 institutions reported positions in Q2 2026.
  • 4 significant owners is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 28 to 35 between Q1 2026 and Q2 2026.
  • SEC-reported value moved from
    $7.22MFull value: $7,216,791 · USD · 31 Mar 2026
    to
    $12.21MFull value: $12,205,956 · USD · 30 Jun 2026
    .

Research use

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 35 institutions filings for Q2 2026.

Open SEC evidence

Security key

237690102

13F reference period

Q2 2026

13F holders

35

13D/G owners

4

CIK / CUSIP context first

Open Q2 2026 holders DAIO full holder history DATA I/O CORP SEC filings DATA I/O CORP company facts DATA I/O CORP insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
4
Security
DAIO
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Red Oak Partners, LLC 11% $4,373,130 1,492,536 Red Oak Partners, LLC 20 Oct 2026
LYTTON LAURENCE W 9.9% $2,832,930 1,026,424 LYTTON LAURENCE W 17 Jun 2026
Philotimo Fund, LP 9.1% $1,939,063 839,421 Kanen David 22 May 2025
RENAISSANCE TECHNOLOGIES LLC 4.7% $1,321,664 437,637 Renaissance Technologies LLC 31 Dec 2025
As of 30 Jun 2026, 35 institutional investors reported holding
3.11MFull value: 3,107,594 · shares · 30 Jun 2026
shares of DATA I/O CORP - Common Stock (DAIO). This represents 23% of the company’s total
13.33MFull value: 13,326,214 · shares · Stored outstanding share count
outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
23%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
Kanen Wealth Management LLC 6.3% 839,421 0% 0.8% $3,287,675
RENAISSANCE TECHNOLOGIES LLC 2.9% 392,443 -3.7% 0% $1,546,225
Penbrook Management LLC 2.7% 355,850 -0.28% 0.89% $1,402,049
VANGUARD CAPITAL MANAGEMENT LLC 2.4% 323,672 +8.1% 0% $1,275,268
Kovack Advisors, Inc. 2.1% 285,481 +6.5% 0.05% $1,107,666
DIMENSIONAL FUND ADVISORS LP 1.1% 140,679 0% 0% $554,276
GEODE CAPITAL MANAGEMENT, LLC 0.86% 115,057 +32% 0% $453,420
ACADIAN ASSET MANAGEMENT LLC 0.81% 108,582 -13% 0% $427,000
CITADEL ADVISORS LLC 0.65% 86,869 0% $342,264
ESSEX INVESTMENT MANAGEMENT CO LLC 0.56% 74,558 -0.11% 0.04% $293,759
VANGUARD FIDUCIARY TRUST CO 0.44% 58,643 +28% 0% $231,053
SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.36% 48,548 +81% 0% $191,279
Steward Partners Investment Advisory, LLC 0.33% 43,472 0% 0% $171,280
THOMPSON DAVIS & CO., INC. 0.18% 23,533 0.06% $92,720
JAMES INVESTMENT RESEARCH, INC. 0.17% 22,402 0% 0.01% $88,264
NewEdge Advisors, LLC 0.17% 22,402 0% 0% $88,264
NORTHERN TRUST CORP 0.16% 21,827 +62% 0% $85,998
LPL Financial LLC 0.16% 21,000 -6.9% 0% $82,740
JANE STREET GROUP, LLC 0.13% 17,727 0% $69,844
Legato Capital Management LLC 0.13% 17,550 0% 0.01% $69,147
BlackRock, Inc. 0.13% 17,015 0% 0% $67,039
STATE STREET CORP 0.12% 16,170 0% 0% $63,710
XTX Topco Ltd 0.11% 15,284 0% $60,219
HRT FINANCIAL LP 0.08% 11,288 0% $44,000
CITIGROUP INC 0.05% 7,176 0% $28,273

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
51
Headline period
Q2 2026
Rows shown
1-25 of 51
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q3 452,811 $1,326,736 $2.93 4
2026 Q2 3,107,594 $12,205,956 +$955,048 $3.94 35
2026 Q1 2,869,815 $7,216,791 -$243,798 $2.53 28
2025 Q4 2,954,928 $8,437,277 -$769,403 $3.17 25
2025 Q3 3,191,255 $10,670,616 -$71,807 $3.34 25
2025 Q2 3,214,683 $9,925,095 +$472,848 $3.10 26
2025 Q1 3,065,390 $7,508,872 -$197,843 $2.45 26
2024 Q4 3,137,498 $8,689,633 -$61,863 $2.77 29
2024 Q3 3,165,684 $8,135,386 -$293,772 $2.57 28
2024 Q2 3,283,498 $9,061,247 -$195,452 $2.76 30
2024 Q1 3,353,666 $11,803,495 +$1,760,101 $3.52 31
2023 Q4 2,853,608 $8,386,497 -$1,522,372 $2.94 29
2023 Q3 3,366,189 $12,823,685 -$26,972 $3.81 29
2023 Q2 3,354,304 $14,389,215 +$368,710 $4.29 28
2023 Q1 3,287,639 $16,343,591 +$2,507,149 $4.97 30
2022 Q4 2,762,237 $10,962,571 -$1,359,122 $3.97 29
2022 Q3 3,204,718 $8,940,502 -$425,465 $2.79 24
2022 Q2 3,357,503 $10,305,366 +$154,333 $3.07 24
2022 Q1 3,306,975 $14,049,845 +$380,201 $4.25 25
2021 Q4 3,216,116 $14,823,855 -$2,918,941 $4.61 27
2021 Q3 3,582,648 $23,382,000 -$276,203 $6.53 30
2021 Q2 3,605,835 $24,555,000 +$1,393,223 $6.81 26
2021 Q1 3,423,528 $18,553,000 +$762,966 $5.42 27
2020 Q4 3,328,064 $13,712,260 -$1,140,252 $4.12 26
2020 Q3 3,418,500 $10,871,561 +$18,088 $3.18 22
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