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DAIO DATA I O CORP

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COM (common), issuer CIK 351998

27 managers (29 13F filers) reported a position in DAIO shares at 2026-03-31, 2,869,951 shares in all. 4 filers opened a position and 4 filers sold out during the quarter.

Managers
27
13F filers
29
New
4
Added
3
Reduced
6
Sold out
4
Shares held by filers
2,869,951

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Kanen Wealth Management LLC839,421$2.12M0.76%013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC407,643$1.03M<0.01%-29,99413F-HRTimeline
Penbrook Management LLC356,850$903K0.68%013F-HRTimeline
VANGUARD GROUP INCgroup of 3 filers holding350,374$886KnewTimeline
Kovack Advisors, Inc.267,981$635K0.03%-92513F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP140,679$356K<0.01%-39,57013F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC124,119$313K<0.01%-1,10013F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC86,867$220K<0.01%-17,71513F-HRTimelineGroup
ESSEX INVESTMENT MANAGEMENT CO LLC74,641$189K0.03%013F-HRTimeline
Steward Partners Investment Advisory, L…43,472$110K<0.01%013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…26,837$67.9K<0.01%+11,14013F-HRTimelineGroup
LPL Financial LLC22,545$57K<0.01%new13F-HRTimeline
JAMES INVESTMENT RESEARCH, INC.22,402$56.7K0.01%013F-HRTimeline
NewEdge Advisors, LLC22,402$56.7K<0.01%013F-HR/ATimeline
Legato Capital Management LLC17,550$44.4K<0.01%013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.17,015$43K<0.01%013F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP16,170$40.9K<0.01%013F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC13,788$34.9K<0.01%new13F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP13,476$34.1K<0.01%013F-HRTimelineGroup
SIMPLEX TRADING, LLC2,759$6.98K<0.01%+82713F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,681$4.25K<0.01%-45013F-HRTimelineGroup
UBS Group AGin group UBS Group AG941$2.38K<0.01%new13F-HRTimelineGroup
GROUP ONE TRADING LLC100$253<0.01%new13F-HRTimeline
BARD ASSOCIATES INC100$253<0.01%013F-HRTimeline
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK1$3<0.01%013F-HRTimelineGroup
SBI Securities Co., Ltd.1$3<0.01%013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA136$00%+2613F-HRTimelineGroupValue filed as zero, left out of ratios.