Data I/O Corporation
DAIO • NASDAQ
Data I/O Corporation is a hardware, equipment & parts company in the technology sector on NASDAQ, led by Douglas Brown, with a market cap of $29.8M. As of Q3 2025, 34% of shares are held by 25 institutional investors, with Kanen Wealth Management LLC as the largest holder at 8.94%.
Chief Executive OfficerDouglas Brown
Market Cap$29.8M
Hardware, Equipment & Parts
Technology
Employees100.0
Websitedataio.com
Country
United States of America
Overview
Overview of institutional ownership in DAIO as of Q3 2025 with a market cap of $31.4M
All Institutions
- Institutions
- 25
- Value Held
- $10.7M
- Shares Held
- 3.2M
- Avg Position
- $426.9K
- Median Position
- $74.8K
Hedge Funds
- Hedge Funds
- 2
- Value Held
- $1.7M
- Shares Held
- 518.4K
- Avg Position
- $865.7K
- Median Position
- $865.7K
Ownership Breakdown
Based on market cap of $31.4M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Biggest Investors
Institutions with the largest positions in DAIO as of Q3 2025
| Institution | Position Value |
|---|---|
 Kanen Wealth Management LLC RIA/Wealth | $2.8M 0.94% of portfolio |
 RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | $1.6M 0.00% of portfolio |
 VANGUARD GROUP INC Institution | $1.2M 0.00% of portfolio |
 Penbrook Management LLC RIA/Wealth | $1.2M 0.82% of portfolio |
 Kovack Advisors, Inc. RIA/Wealth | $879.2K 0.08% of portfolio |
 DIMENSIONAL FUND ADVISORS LP Long Only Manager | $872.2K 0.00% of portfolio |
 ACADIAN ASSET MANAGEMENT LLC Long Only Manager | $445.0K 0.00% of portfolio |
 Bank of New York Mellon Corp Institution | $389.9K 0.00% of portfolio |
 GEODE CAPITAL MANAGEMENT LLC ETF Provider | $339.5K 0.00% of portfolio |
 ESSEX INVESTMENT MANAGEMENT CO LLC Long Only Manager | $249.3K 0.04% of portfolio |
Net Capital Flow
Institutional buying and selling activity for DAIO in Q3 2025
- Traded
- −$72.1K
- Buyers
- 7
- Sellers
- 8
- Total Bought
- +$83.7K
- Total Sold
- −$155.8K
- Avg Position
- $381.1K
Biggest Buyers
| Institution | Net Bought |
|---|---|
+$46.8K +14.0K shares | |
GEODE CAPITAL MANAGEMENT LLC ETF Provider | +$13.4K +4.0K shares |
Penbrook Management LLC RIA/Wealth | +$10.0K +3.0K shares |
 UBS Group AG Institution | +$9.1K +2.7K shares |
 NORTHERN TRUST CORP Institution | +$2.8K +829.0 shares |
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | +$1.6K +491.0 shares |
 BANK OF AMERICA CORP /DE/ Institution | +$6.7 +2.0 shares |
Biggest Sellers
| Institution | Net Sold |
|---|---|
 BARD ASSOCIATES INC RIA/Wealth | −$66.7K −21.7K shares |
DIMENSIONAL FUND ADVISORS LP Long Only Manager | −$30.0K −9.0K shares |
 SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | −$24.3K −7.3K shares |
Kovack Advisors, Inc. RIA/Wealth | −$20.7K −6.2K shares |
S SIMPLEX TRADING, LLC Institution | −$7.9K −2.4K shares |
 RAYMOND JAMES FINANCIAL INC RIA/Wealth | −$3.1K −1.0K shares |
 CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | −$2.7K −797.0 shares |
T Tower Research Capital LLC Institution | −$377.5 −113.0 shares |
Entry and Exit Activity
Institutions that initiated new positions or completely exited DAIO in Q3 2025
- New Positions
- 0
- New Value
- -
- Exited Positions
- 2
- Exited Value
- $69.8K
New Positions
| Institution | Position Value |
|---|---|
| No new positions found | |
Exited Positions
| Institution | Previous Position |
|---|---|
BARD ASSOCIATES INC RIA/Wealth | $66.7K 21.7K shares |
RAYMOND JAMES FINANCIAL INC RIA/Wealth | $3.1K 1.0K shares |
Options Activity
Institutions with the largest Call and Put options positions in DAIO as of Q3 2025
- Call Positions
- 0
- Call Value
- -
- Put Positions
- 1
- Put Value
- $265.5K
Call Positions
| Institution | Position Value |
|---|---|
| No call positions found | |
Put Positions
| Institution | Position Value |
|---|---|
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $265.5K 795.0 contracts |
Most Committed Institutions
Institutions with DAIO as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
Kanen Wealth Management LLC RIA/Wealth | 0.94% $2.8M |
Penbrook Management LLC RIA/Wealth | 0.82% $1.2M |
Kovack Advisors, Inc. RIA/Wealth | 0.08% $879.2K |
ESSEX INVESTMENT MANAGEMENT CO LLC Long Only Manager | 0.04% $249.3K |
 JAMES INVESTMENT RESEARCH INC Long Only Manager | 0.01% $74.8K |
 Legato Capital Management LLC Fund of Funds | 0.01% $58.6K |
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | 0.00% $1.6M |
ACADIAN ASSET MANAGEMENT LLC Long Only Manager | 0.00% $445.0K |
0.00% $116.6K | |
 Goss Wealth Management LLC RIA/Wealth | 0.00% $74.8K |
Hedge Fund Spotlight
Discover hedge funds investing in DAIO
RENAISSANCE TECHNOLOGIES LLC
Hedge Fund • Quant
Portfolio ManagerPeter Fitzhugh Brown
- Portfolio Value
- $75.8B
- Positions
- 3,419
- Last Reported
- Q3 2025
Sector Allocation
Position in Data I/O Corporation
- Market Value
- $1.6M
- Shares Held
- 476.8K
- Portfolio Weight
- 0.00%
- Owned Since
- 2013-Q2
| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
Software - Infrastructure Technology | $1.6B | 2.06% | |
Semiconductors Technology | $1.1B | 1.39% | |
Electronic Gaming & Multimedia Technology | $953.5M | 1.26% |
