REDMOND, WA
DATA I/O CORPDAIO— Latest position per institution from SEC 13F filings
15
Institutional holders
3.52M
Total shares held
12.43M
Estimated value
175.97K
Avg. position size
KANEN WEALTH MANAGEMENT LLC
CIK 1681614
Shares
839.42K
Value
3.29M
Filed
Jun 30, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
392.44K
Value
1.55M
Filed
Jun 30, 2026
PENBROOK MANAGEMENT LLC
CIK 1381055
Shares
355.85K
Value
1.04M
Filed
Sep 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
350.37K
Value
1.11M
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
323.67K
Value
1.28M
Filed
Jun 30, 2026
KOVACK ADVISORS, INC.
CIK 1728321
Shares
285.48K
Value
1.11M
Filed
Jun 30, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
140.68K
Value
554.28K
Filed
Jun 30, 2026
BANK OF NEW YORK MELLON CORP
CIK 1390777
Shares
116.75K
Value
389.95K
Filed
Sep 30, 2025
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
115.06K
Value
453.42K
Filed
Jun 30, 2026
ACADIAN ASSET MANAGEMENT LLC
CIK 916542
Shares
108.58K
Value
427.00
Filed
Jun 30, 2026
CITADEL ADVISORS LLC
CIK 1423053
Shares
86.87K
Value
342.26K
Filed
Jun 30, 2026
ESSEX INVESTMENT MANAGEMENT CO LLC
CIK 201772
Shares
74.56K
Value
218.46K
Filed
Sep 30, 2026
VANGUARD FIDUCIARY TRUST CO
CIK 933478
Shares
58.64K
Value
231.05K
Filed
Jun 30, 2026
ZACKS INVESTMENT MANAGEMENT
CIK 1086483
Shares
49.90K
Value
128.24K
Filed
Sep 30, 2024
PERRITT CAPITAL MANAGEMENT INC
CIK 1279342
Shares
49.37K
Value
136.27K
Filed
Jun 30, 2024
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
Shares
48.55K
Value
191.28K
Filed
Jun 30, 2026
STEWARD PARTNERS INVESTMENT ADVISORY, LLC
CIK 1723397
Shares
43.47K
Value
171.28K
Filed
Jun 30, 2026
ASHURST PERKINS COIE TRUST CO
CIK 1513038
Shares
29.60K
Value
75.78K
Filed
Sep 30, 2024
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
26.65K
Value
73.56K
Filed
Jun 30, 2024
THOMPSON DAVIS & CO., INC.
CIK 1017284
Shares
23.53K
Value
92.72K
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | KANEN WEALTH MANAGEMENT LLC | 1681614 | 839.42K | 3.29M | Jun 30, 2026 |
| 2 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 392.44K | 1.55M | Jun 30, 2026 |
| 3 | PENBROOK MANAGEMENT LLC | 1381055 | 355.85K | 1.04M | Sep 30, 2026 |
| 4 | VANGUARD GROUP INC | 102909 | 350.37K | 1.11M | Dec 31, 2025 |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 323.67K | 1.28M | Jun 30, 2026 |
| 6 | KOVACK ADVISORS, INC. | 1728321 | 285.48K | 1.11M | Jun 30, 2026 |
| 7 | DIMENSIONAL FUND ADVISORS LP | 354204 | 140.68K | 554.28K | Jun 30, 2026 |
| 8 | BANK OF NEW YORK MELLON CORP | 1390777 | 116.75K | 389.95K | Sep 30, 2025 |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 115.06K | 453.42K | Jun 30, 2026 |
| 10 | ACADIAN ASSET MANAGEMENT LLC | 916542 | 108.58K | 427.00 | Jun 30, 2026 |
| 11 | CITADEL ADVISORS LLC | 1423053 | 86.87K | 342.26K | Jun 30, 2026 |
| 12 | ESSEX INVESTMENT MANAGEMENT CO LLC | 201772 | 74.56K | 218.46K | Sep 30, 2026 |
| 13 | VANGUARD FIDUCIARY TRUST CO | 933478 | 58.64K | 231.05K | Jun 30, 2026 |
| 14 | ZACKS INVESTMENT MANAGEMENT | 1086483 | 49.90K | 128.24K | Sep 30, 2024 |
| 15 | PERRITT CAPITAL MANAGEMENT INC | 1279342 | 49.37K | 136.27K | Jun 30, 2024 |
| 16 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 1446194 | 48.55K | 191.28K | Jun 30, 2026 |
| 17 | STEWARD PARTNERS INVESTMENT ADVISORY, LLC | 1723397 | 43.47K | 171.28K | Jun 30, 2026 |
| 18 | ASHURST PERKINS COIE TRUST CO | 1513038 | 29.60K | 75.78K | Sep 30, 2024 |
| 19 | BLACKROCK FINANCE, INC. | 1364742 | 26.65K | 73.56K | Jun 30, 2024 |
| 20 | THOMPSON DAVIS & CO., INC. | 1017284 | 23.53K | 92.72K | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.