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GROUP ONE TRADING LLC

Position in DAIO — Data I/O Corp

CIK 932540 CHICAGO, IL

Position in DAIO

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$25,413
+$25,160 QoQ
Shares Held
6,450
+6350.0% QoQ
Ownership
0.062%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#26
of 35 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in DAIO Over Time

Shares Held

Position Value (USD)

Position in Electronic Components

Technology · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $43,122,111 across 17 Electronic Components names. DAIO ranks #15 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in DAIO

Export CSV
2 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $25,413 6,450
2026-03-31 $253 100