- Type / Class
- Equity / Common Stock
- Shares outstanding
- 9,391,352
- Total 13F shares
- 356,850
- Share change
- 0
- Total reported value
- $902,830
- Price per share
- $2.53
- Number of holders
- 1
Quarterly Holders Quick Answers
What is CUSIP 237690102?
CUSIP 237690102 identifies DAIO - DATA I/O CORP - Common Stock in SEC institutional holdings data.
Need full ownership history?
Open the full security ownership history page.
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These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.
- Back to full security ownership history for the broader multi-quarter picture.
- Latest 13F filings for newly reported positions across managers.
- Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
- SEC investors directory for manager drilldown.
Explore More Reporting Periods
Jump to adjacent filing periods for faster comparison and easier crawl discovery.
- Previous quarter: Q4 2025
Recent filing periods for CUSIP 237690102:
Top shareholders of DAIO - DATA I/O CORP - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Philotimo Fund, LP |
13D/G
|
Kanen David |
9.1%
|
839,421
|
$1,939,063 | $0 | 22 May 2025 | |
| Kanen Wealth Management LLC |
13F
|
Company |
8.9%
|
839,421
|
$1,732,000 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
13D/G
|
Company |
4.7%
from 13D/G
|
437,637
|
$1,387,309 | — | 31 Dec 2025 | |
| Anthony Ambrose |
3/4/5
|
President, Director |
—
class O/S missing
|
471,048
|
$1,351,908 | — | 01 Jun 2024 | |
| Penbrook Management LLC |
13F
|
Company |
3.8%
|
356,850
|
$1,131,215 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
3.7%
|
350,374
|
$1,110,685 | — | 31 Dec 2025 | |
| Kovack Advisors, Inc. |
13F
|
Company |
2.9%
|
268,906
|
$852,432 | — | 31 Dec 2025 | |
| Joel S. Hatlen |
3/4/5
|
Vice President CFO COO |
—
class O/S missing
|
178,119
|
$774,818 | — | 01 Jun 2023 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
1.9%
|
180,249
|
$571,389 | — | 31 Dec 2025 | |
| Rajeev Gulati |
3/4/5
|
Vice President CTO |
—
class O/S missing
|
167,897
|
$481,864 | — | 01 Jun 2024 | |
| Michael R. Tidwell |
3/4/5
|
VP Mktg & Corp Bus Dev |
—
class O/S missing
|
147,774
|
$424,111 | — | 01 Jun 2024 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
1.3%
|
125,219
|
$396,000 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.1%
|
104,582
|
$331,593 | — | 31 Dec 2025 | |
| Charles Joesph DiBona |
3/4/5
|
Vice President & CFO |
1.1%
|
100,000
|
$315,430 | — | 01 Sep 2025 | |
| Mark J. Gallenberger |
3/4/5
|
Director |
—
class O/S missing
|
69,509
|
$302,364 | — | 20 May 2021 | |
| Douglas Wells Brown |
3/4/5
|
Director |
1.1%
|
101,759
|
$252,362 | — | 15 May 2025 | |
| Gerald Yat Ng |
3/4/5
|
Vice President CFO |
—
class O/S missing
|
88,191
|
$246,053 | — | 03 Jul 2024 | |
| ESSEX INVESTMENT MANAGEMENT CO LLC |
13F
|
Company |
0.79%
|
74,641
|
$236,612 | — | 31 Dec 2025 | |
| Sally A. Washlow |
3/4/5
|
Director |
0.77%
|
72,651
|
$180,174 | — | 15 May 2025 | |
| Edward J. Smith |
3/4/5
|
Director |
0.67%
|
63,115
|
$156,525 | +$12,300 | 15 May 2025 | |
| Wentworth William O |
3/4/5
|
President, Director |
0.56%
|
52,872
|
$147,195 | +$49,979 | 03 Dec 2025 | |
| Steward Partners Investment Advisory, LLC |
13F
|
Company |
0.46%
|
43,472
|
$137,806 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.35%
|
32,882
|
$104,236 | — | 31 Dec 2025 | |
| Garrett Riley Larson |
3/4/5
|
Director |
0.33%
|
30,572
|
$75,818 | — | 15 May 2025 | |
| JAMES INVESTMENT RESEARCH, INC. |
13F
|
Company |
0.24%
|
22,402
|
$71,014 | — | 31 Dec 2025 | |
| NewEdge Advisors, LLC |
13F
|
Company |
0.24%
|
22,402
|
$71,014 | — | 31 Dec 2025 | |
| Cheemin Bo-Linn |
3/4/5
|
Director |
—
class O/S missing
|
15,401
|
$66,994 | — | 19 May 2022 | |
| Legato Capital Management LLC |
13F
|
Company |
0.19%
|
17,550
|
$55,633 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
|
Company |
0.18%
|
17,015
|
$53,938 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.17%
|
16,170
|
$51,259 | — | 31 Dec 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.17%
|
15,697
|
$49,759 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.14%
|
13,476
|
$42,719 | — | 31 Dec 2025 | |
| DRW Securities, LLC |
13F
|
Company |
0.12%
|
11,731
|
$37,187 | — | 31 Dec 2025 | |
| Steven M. Waszak |
3/4/5
|
Director |
0.08%
|
7,950
|
$22,192 | — | 03 Dec 2025 | |
| Tower Research Capital LLC (TRC) |
13F
|
Company |
0.02%
|
2,131
|
$6,755 | — | 31 Dec 2025 | |
| SIMPLEX TRADING, LLC |
13F
|
Company |
0.02%
|
1,932
|
$6,124 | — | 31 Dec 2025 | |
| Capital Analysts, LLC |
13F
|
Company |
0%
|
159
|
$1,000 | — | 31 Dec 2025 | |
| BARD ASSOCIATES INC |
13F
|
Company |
0%
|
100
|
$317 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0%
|
87
|
$275 | — | 31 Dec 2025 | |
| HUNTINGTON NATIONAL BANK |
13F
|
Company |
0%
|
1
|
$3 | — | 31 Dec 2025 | |
| SBI Securities Co., Ltd. |
13F
|
Company |
0%
|
1
|
$3 | — | 31 Dec 2025 |
Institutional Holders of DATA I/O CORP - Common Stock (DAIO) as of Q1 2026
As of 31 Mar 2026,
DATA I/O CORP - Common Stock (DAIO) was held by
1 institutional
shareholder
that filed Form 13F with the SEC.
Together, they reported ownership of
356,850 shares.
The largest 1 holders included
Penbrook Management LLC.
This page lists
1
institutional shareholders reporting positions in this security
for the Q1 2026 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
25
Q1 2026 holders
1
Holder diff
-24
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q1 2026 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.