Security key
237690102
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 3,216,116
- Total 13F value
- $14,823,855
- Share change
- -366,532
- SEC-reported price per share
- $4.61
- Number of holders
- 27
- Value change
- -$2,918,941
- Number of buys
- 12
- Number of sells
- 14
- Shares outstanding
- 13,326,214
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2021
Institutions
27
Top holders
10
DAIO full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2026
DATA I/O CORP SEC filings
DATA I/O CORP company facts
Broader feeds
Reporting periods
Holder history for CUSIP 237690102
Recent filing periods:
Ownership snapshot
Top reported holders of DAIO - DATA I/O CORP - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
RENAISSANCE TECHNOLOGIES LLC
Disclosed value leader
RENAISSANCE TECHNOLOGIES LLC
Comparable rows
0/15
Latest evidence
30 Sep 2021
13F
3/4/5
Highest disclosed value: $4,568,000
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
RENAISSANCE TECHNOLOGIES LLC has the largest disclosed position value at $4.57M.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens RENAISSANCE TECHNOLOGIES LLC's linked filing trail.
Disclosed position value
Top 5
RENAISSANCE TECHNOLOGIES LLC
$4.57M
AIGH Capital Management LLC
$2.73M
Penbrook Management LLC
$2.28M
VANGUARD GROUP INC
$2.16M
DIMENSIONAL FUND ADVISORS LP
$1.97M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
—
denominator unverified
|
$4,568,000
699,543 shares
|
— | 30 Sep 2021 |
| AIGH Capital Management LLC |
13F
Company
|
—
denominator unverified
|
$2,731,000
418,310 shares
|
— | 30 Sep 2021 |
| Penbrook Management LLC |
13F
Company
|
—
denominator unverified
|
$2,279,000
348,950 shares
|
— | 30 Sep 2021 |
| VANGUARD GROUP INC |
13F
Company
|
—
denominator unverified
|
$2,164,000
331,391 shares
|
— | 30 Sep 2021 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
—
denominator unverified
|
$1,973,000
303,126 shares
|
— | 30 Sep 2021 |
| Kovack Advisors, Inc. |
13F
Company
|
—
denominator unverified
|
$1,634,000
250,302 shares
|
— | 30 Sep 2021 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2021
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
27
Shares
3,216,116
Rows available
27
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2021 vs Q3 2021 Across Filers
Q3 2021 holders
30
Q4 2021 holders
27
Holder diff
-3
| Investor | Q3 2021 Shares | Q4 2021 Shares | Share Diff | Share Chg % | Q3 2021 value | Q4 2021 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend