Equibles

DAIO

Data I/O Corp

Company with tickers: DAIO

CIK
351998
CUSIP
237690102
Shares Outstanding
9,394,422
13F Activity (30d)
27 filings 27 filers
Holders: 30
Total Value: $7,532,685
Total Shares: 2,977,351

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 30 13F filers · Δ vs Dec 31, 2025
Top Holder
28.2%
Jun 2023 → Mar 2026 · range 19.0% – 28.2%
+3.1 pts
Top 5
72.9%
Jun 2023 → Mar 2026 · range 66.2% – 72.9%
+0.9 pts
Top 10
90.9%
Jun 2023 → Mar 2026 · range 89.6% – 94.5%
−3.6 pts
HHI
1,384
Jun 2023 → Mar 2026 · range 1,074 – 1,411
Broadly held +74

Quarterly Activity

vs Dec 31, 2025
New
7
Increased
3
Decreased
7
Sold Out
4
Unchanged
13
Holder count: +3
Institutional value: -29.0%
Shares held: -11.1%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP +11,140 26,837
Mid SIMPLEX TRADING, LLC +827 2,759
Mega ROYAL BANK OF CANADA +26 136

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega CITADEL ADVISORS LLC −319,282 107,400
Mega DIMENSIONAL FUND ADVISORS LP −39,570 140,679
Large RENAISSANCE TECHNOLOGIES LLC −29,994 407,643
Mega GEODE CAPITAL MANAGEMENT, LLC −17,715 86,867
Large ACADIAN ASSET MANAGEMENT LLC −1,100 124,119

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 299,397 $757,474
Mega VANGUARD FIDUCIARY TRUST CO 45,853 $116,008
Mega LPL Financial LLC 22,545 $57,038
Mega GOLDMAN SACHS GROUP INC 13,788 $34,883
Mega Vanguard Global Advisers, LLC 5,124 $12,963

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 350,374 $1,110,685
Mid DRW Securities, LLC 11,731 $37,187
Small Capital Analysts, LLC 159 $504
Mega BANK OF AMERICA CORP /DE/ 87 $275
Filter: New 7 Increased 3 Reduced 7 Sold out 4 Unchanged 13
31 of 31 shown
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Small Kanen Wealth Management LLC $2,123,735 28.19% 839,421
Large RENAISSANCE TECHNOLOGIES LLC $1,031,336 13.69% 407,643
Small Penbrook Management LLC $902,830 11.99% 356,850
Mega VANGUARD CAPITAL MANAGEMENT LLC $757,474 10.06% 299,397
Mid Kovack Advisors, Inc. $677,991 9.00% 267,981
Mega DIMENSIONAL FUND ADVISORS LP $355,917 4.72% 140,679
Large ACADIAN ASSET MANAGEMENT LLC $314,021 4.17% 124,119
Mega GEODE CAPITAL MANAGEMENT, LLC $219,773 2.92% 86,867
Small ESSEX INVESTMENT MANAGEMENT CO LLC $188,841 2.51% 74,641
Mega CITADEL ADVISORS LLC $139,150 1.85% 55,000
Mega CITADEL ADVISORS LLC $132,572 1.76% 52,400
Mega VANGUARD FIDUCIARY TRUST CO Bank $116,008 1.54% 45,853
Large Steward Partners Investment Advisory, LLC $109,984 1.46% 43,472
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $67,897 0.90% 26,837
Mega LPL Financial LLC $57,038 0.76% 22,545
Mid NewEdge Advisors, LLC $56,677 0.75% 22,402
Small JAMES INVESTMENT RESEARCH, INC. $56,677 0.75% 22,402
Small Legato Capital Management LLC $44,401 0.59% 17,550
Mega BlackRock, Inc. $43,047 0.57% 17,015
Mega STATE STREET CORP $40,910 0.54% 16,170
Mega GOLDMAN SACHS GROUP INC $34,883 0.46% 13,788
Mega NORTHERN TRUST CORP Bank $34,094 0.45% 13,476
Mega Vanguard Global Advisers, LLC $12,963 0.17% 5,124
Mid SIMPLEX TRADING, LLC $6,980 0.09% 2,759
Mid Tower Research Capital LLC (TRC) $4,252 0.06% 1,681
Mega UBS Group AG $2,380 0.03% 941
Mega ROYAL BANK OF CANADA Bank $344 0.00% 136
Small BARD ASSOCIATES INC $253 0.00% 100
Mid GROUP ONE TRADING LLC $253 0.00% 100
Large HUNTINGTON NATIONAL BANK Bank $2 0.00% 1
Mid SBI Securities Co., Ltd. Broker-Dealer $2 0.00% 1

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