Data I/O Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqCM:DAIO Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
07 May 25	BuyUS$12,300	Edward Smith	Individual	5,000	US$2.46
06 May 25	BuyUS$24,998	William Wentworth	Individual	10,332	US$2.42
01 May 25	BuyUS$24,981	William Wentworth	Individual	10,585	US$2.36
26 Aug 24	BuyUS$7,980	Douglas Brown	Individual	3,000	US$2.66

Insider Trading Volume

Insider Buying: DAIO insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of DAIO?
Owner Type	Number of Shares	Ownership Percentage
Individual Insiders	300,726	3.25%
Hedge Funds	479,615	5.19%
Institutions	2,565,882	27.8%
General Public	5,893,508	63.8%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 36.11% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
8.87%	Kanen Wealth Management LLC	819,528	US$2.3m	-2.37%	0.85%
5.19%	Renaissance Technologies LLC	479,615	US$1.4m	-4.77%	no data
3.88%	The Vanguard Group, Inc.	358,458	US$1.0m	-0.42%	no data
3.05%	Kovack Advisors, Inc., Asset Management Arm	282,006	US$798.1k	0.79%	0.08%
2.92%	Penbrook Management LLC	269,450	US$762.5k	-0.74%	0.55%
2.79%	Dimensional Fund Advisors LP	257,352	US$728.3k	3.37%	no data
1.59%	Acadian Asset Management LLC	146,540	US$414.7k	0%	no data
1.26%	BNY Asset Management	116,751	US$330.4k	0%	no data
1.06%	Geode Capital Management, LLC	97,734	US$276.6k	1.27%	no data
0.88%	Douglas Brown	81,459	US$230.5k	20.9%	no data
0.79%	Sally Washlow	72,651	US$205.6k	38.8%	no data
0.68%	Edward Smith	63,115	US$178.6k	66.9%	no data
0.49%	William Wentworth	45,417	US$128.5k	85.4%	no data
0.47%	Essex Investment Management Company, LLC	43,691	US$123.6k	11.9%	0.02%
0.45%	Citadel Advisors LLC	41,221	US$116.7k	8.17%	no data
0.24%	Bard Associates Inc.	22,188	US$62.8k	0%	0.02%
0.22%	David Kanen	19,893	US$56.3k	0%	no data
0.18%	BlackRock, Inc.	17,015	US$48.2k	0%	no data
0.18%	State Street Global Advisors, Inc.	16,170	US$45.8k	0%	no data
0.17%	Northern Trust Global Investments	16,024	US$45.3k	0%	no data
0.17%	Salem Investment Counselors, Inc.	15,796	US$44.7k	0%	no data
0.17%	James Investment Research, Inc.	15,402	US$43.6k	0%	0.01%
0.17%	NewEdge Advisors, LLC	15,402	US$43.6k	0%	no data
0.14%	Gerald Ng	13,191	US$37.3k	0%	no data
0.12%	Legato Capital Management, LLC	10,676	US$30.2k	0%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/06/10 06:08
End of Day Share Price	2025/06/10 00:00
Earnings	2025/03/31
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Data I/O Corporation is covered by 3 analysts. 0 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Jaeson Allen Schmidt	Lake Street Capital Markets, LLC
James Anderson	R.F. Lafferty & Co., Inc
Kevin Garrigan	WestPark Capital, Inc.