Data I DAIO Institutional Ownership

NASDAQ DAIO

$2.93 -0.04 (-1.18%)

As of: Sep 30, 2026 · 3:06 PM EDT

Institutions by Trading Activity

35 Institutions

Increased 18 51.4%

Unchanged 11 31.4%

Reduced 6 17.1%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

32.47%

▲+1.91 pp QoQ

Shares Held by Institutions

3.11Mn

of 9.57Mn outstanding

▲+8.81% QoQ

Shares Outstanding

9.57Mn

6.46Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▲+6 vs prior quarter

Net Shares Added (QoQ)

+251.67K

accumulated since last quarter

Value of Holdings

$9.23Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Data I/O Corp (NASDAQ:DAIO) has 35 institutional investors that have filed 13F reports for the period ending June 2026.

They owned 32.5% of outstanding stock in June 2026, up from 30.6% the prior quarter.
Their total shares held in DAIO increased 8.81% quarter over quarter, and separately, investors owning Data I increased 34.62% from a year ago.
Activity in DAIO broke down as 18 buyers, 6 sellers, and 11 unchanged among 35 total holders.
Combined, these investors held 3.11Mn shares in DAIO for June 2026, up by 251.67K shares quarter on quarter, and down 64.72K shares year over year.
Kanen Wealth Management LLC is the top holder of Data I as of June 30, 2026, with 839.42K shares representing 8.77% of outstanding stock.
Top purchasers of DAIO stock for the quarter ending June 2026 included CITADEL ADVISORS LLC (86.87K), GEODE CAPITAL MANAGEMENT, LLC (28.19K), VANGUARD CAPITAL MANAGEMENT LLC (24.28K), THOMPSON DAVIS & CO., INC. (23.53K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (21.71K).
The largest sellers of Data I for the quarter ending June 2026 were ACADIAN ASSET MANAGEMENT LLC (15.54K), RENAISSANCE TECHNOLOGIES LLC (15.2K), LPL Financial LLC (1.54K), Tower Research Capital LLC (TRC) (1.37K), Penbrook Management LLC (1.0K).
According to Business Quant data, leading holders of DAIO for June 2026 are Kanen Wealth Management LLC (839.42K), RENAISSANCE TECHNOLOGIES LLC (392.44K), Penbrook Management LLC (355.85K), VANGUARD CAPITAL MANAGEMENT LLC (323.67K), Kovack Advisors, Inc. (285.48K), DIMENSIONAL FUND ADVISORS LP (140.68K), GEODE CAPITAL MANAGEMENT, LLC (115.06K), ACADIAN ASSET MANAGEMENT LLC (108.58K), CITADEL ADVISORS LLC (86.87K), ESSEX INVESTMENT MANAGEMENT CO LLC (74.56K).

Form 13F Holdings

35 Institutional Holders

Report period 30 Jun, 2026

Total shares held 3.11Mn

Of outstanding 32.47%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Kanen Wealth Management LLC	0001681614	839,421	8.77%	0	0.00%	$3.29Mn
2	RENAISSANCE TECHNOLOGIES LLC	0001037389	392,443	4.10%	▼15,200	-3.73%	$1.55Mn
3	Penbrook Management LLC	0001381055	355,850	3.72%	▼1,000	-0.28%	$1.40Mn
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	323,672	3.38%	▲24,275	+8.11%	$1.28Mn
5	Kovack Advisors, Inc.	0001728321	285,481	2.98%	▲17,500	+6.53%	$1.11Mn
6	DIMENSIONAL FUND ADVISORS LP	0000354204	140,679	1.47%	0	0.00%	$554.28K
7	GEODE CAPITAL MANAGEMENT, LLC	0001214717	115,057	1.20%	▲28,190	+32.45%	$453.42K
8	ACADIAN ASSET MANAGEMENT LLC	0000916542	108,582	1.13%	▼15,537	-12.52%	$427
9	CITADEL ADVISORS LLC	0001423053	86,869	0.91%	▲86,869	0.00%	$342.26K
10	ESSEX INVESTMENT MANAGEMENT CO LLC	0000201772	74,558	0.78%	▼83	-0.11%	$293.76K
11	VANGUARD FIDUCIARY TRUST CO	0000933478	58,643	0.61%	▲12,790	+27.89%	$231.05K
12	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0001446194	48,548	0.51%	▲21,711	+80.90%	$191.28K
13	Steward Partners Investment Advisory, LLC	0001723397	43,472	0.45%	0	0.00%	$171.28K
14	THOMPSON DAVIS & CO., INC.	0001017284	23,533	0.25%	▲23,533	0.00%	$92.72K
15	JAMES INVESTMENT RESEARCH, INC.	0000810384	22,402	0.23%	0	0.00%	$88.26K
15	NewEdge Advisors, LLC	0001633516	22,402	0.23%	0	0.00%	$88.26K
16	Northern Trust Corp	0000073124	21,827	0.23%	▲8,351	+61.97%	$86.00K
17	LPL Financial LLC	0001403438	21,000	0.22%	▼1,545	-6.85%	$82.74K
18	JANE STREET GROUP, LLC	0001595888	17,727	0.19%	▲17,727	0.00%	$69.84K
19	Legato Capital Management LLC	0001442641	17,550	0.18%	0	0.00%	$69.15K

Showing 1 to 20 of 35 holders