What does CUSIP 237690102 represent in this 13F holders report?

CUSIP 237690102 is the security identifier for DAIO - DATA I/O CORP - Common Stock used to aggregate holder disclosures.

How many institutions held DAIO - DATA I/O CORP - Common Stock in Q4 2021?

27 institutional investors reported DAIO - DATA I/O CORP - Common Stock for Q4 2021. Use the holders table for investor-level position and value details.

DATA I/O CORP - Common Stock (DAIO)

CUSIP: 237690102

Q4 2021 13F Holders as of 31 Dec 2021

Type / Class: Equity / Common Stock
Shares outstanding: 9,391,352
Total 13F shares: 3,216,116
Share change: -366,532
Total reported value: $14,823,855
Price per share: $4.61
Number of holders: 27
Value change: -$2,918,941
Number of buys: 12
Number of sells: 14

Quarterly Holders Quick Answers

What is CUSIP 237690102?
CUSIP 237690102 identifies DAIO - DATA I/O CORP - Common Stock in SEC institutional holdings data.

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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q1 2022
Previous quarter: Q3 2021

Recent filing periods for CUSIP 237690102:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

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
RENAISSANCE TECHNOLOGIES LLC	13F	Company	7.4%	699,543	$4,568,000	—	30 Sep 2021	13F
AIGH Capital Management LLC	13F	Company	4.5%	418,310	$2,731,000	—	30 Sep 2021	13F
Penbrook Management LLC	13F	Company	3.7%	348,950	$2,279,000	—	30 Sep 2021	13F
VANGUARD GROUP INC	13F	Company	3.5%	331,391	$2,164,000	—	30 Sep 2021	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	3.2%	303,126	$1,973,000	—	30 Sep 2021	13F
Kovack Advisors, Inc.	13F	Company	2.7%	250,302	$1,634,000	—	30 Sep 2021	13F
Kanen Wealth Management LLC	13F	Company	2.4%	228,971	$1,495,000	—	30 Sep 2021	13F
ACADIAN ASSET MANAGEMENT LLC	13F	Company	2.3%	219,297	$1,431,000	—	30 Sep 2021	13F
UNITED CAPITAL FINANCIAL ADVISORS, LLC	13F	Company	2%	189,832	$1,240,000	—	30 Sep 2021	13F
Worth Venture Partners, LLC	13F	Company	1.1%	99,266	$648,000	—	30 Sep 2021	13F
APIS CAPITAL ADVISORS, LLC	13F	Company	0.85%	80,000	$522,000	—	30 Sep 2021	13F
Janney Montgomery Scott LLC	13F	Company	0.76%	71,600	$468,000	—	30 Sep 2021	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.5%	46,621	$303,000	—	30 Sep 2021	13F
Mark J. Gallenberger	3/4/5	Director	— class O/S missing	69,509	$302,364	—	20 May 2021	3/4/5
PERRITT CAPITAL MANAGEMENT INC	13F	Company	0.48%	45,000	$294,000	—	30 Sep 2021	13F
BlackRock Finance, Inc.	13F	Company	0.48%	44,765	$292,000	—	30 Sep 2021	13F
ZACKS INVESTMENT MANAGEMENT	13F	Company	0.46%	43,550	$284,000	—	30 Sep 2021	13F
Cannell & Co.	13F	Company	0.34%	32,000	$208,000	—	30 Sep 2021	13F
BARD ASSOCIATES INC	13F	Company	0.24%	22,425	$146,000	—	30 Sep 2021	13F
NORTHERN TRUST CORP	13F	Company	0.24%	22,114	$144,000	—	30 Sep 2021	13F
Greenhaven Road Investment Management, L.P.	13F	Company	0.2%	19,140	$125,000	—	30 Sep 2021	13F
JAMES INVESTMENT RESEARCH, INC.	13F	Company	0.18%	16,721	$109,000	—	30 Sep 2021	13F
NewEdge Advisors, LLC	13F	Company	0.18%	16,721	$109,000	—	30 Sep 2021	13F
Axiom Investment Management LLC	13F	Company	0.11%	10,200	$66,000	—	30 Sep 2021	13F
OSAIC HOLDINGS, INC.	13F	Company	0.06%	5,700	$37,000	—	30 Sep 2021	13F
ROYAL BANK OF CANADA	13F	Company	0.06%	5,500	$36,000	—	30 Sep 2021	13F
MORGAN STANLEY	13F	Company	0.06%	5,296	$35,000	—	30 Sep 2021	13F
JPMORGAN CHASE & CO	13F	Company	0.05%	4,573	$30,000	—	30 Sep 2021	13F
Tower Research Capital LLC (TRC)	13F	Company	0.01%	1,054	$7,000	—	30 Sep 2021	13F
US BANCORP \DE\	13F	Company	0.01%	500	$3,000	—	30 Sep 2021	13F
UBS Group AG	13F	Company	0%	180	$1,000	—	30 Sep 2021	13F
O'SHAUGHNESSY ASSET MANAGEMENT, LLC	13F	Company	0%	90	$1,000	—	30 Sep 2021	13F

Institutional Holders of DATA I/O CORP - Common Stock (DAIO) as of Q4 2021

As of 31 Dec 2021, DATA I/O CORP - Common Stock (DAIO) was held by 27 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 3,216,116 shares. The largest 10 holders included RENAISSANCE TECHNOLOGIES LLC, Kanen Wealth Management LLC, Penbrook Management LLC, VANGUARD GROUP INC, DIMENSIONAL FUND ADVISORS LP, Kovack Advisors, Inc., ACADIAN ASSET MANAGEMENT LLC, UNITED CAPITAL FINANCIAL ADVISERS, LLC, GEODE CAPITAL MANAGEMENT, LLC, and BlackRock Inc.. This page lists 27 institutional shareholders reporting positions in this security for the Q4 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q4 2021 vs Q3 2021 Across Filers

Q3 2021 holders

Q4 2021 holders

Holder diff

-3

Investor	Q3 2021 Shares	Q4 2021 Shares	Share Diff	Share Chg %	Q3 2021 Value $	Q4 2021 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.