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SIMPLEX TRADING, LLC

Position in DAIO — Data I/O Corp

CIK 1488542 CHICAGO, IL

Position in DAIO

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$16,859
+$9,879 QoQ
Shares Held
4,279
+55.1% QoQ
Ownership
0.041%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#28
of 35 holders
Holding Since
Mar 2022
9 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

SIMPLEX TRADING, LLC holds $43,920,263 across 22 Electronic Components names. DAIO ranks #20 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in DAIO

Export CSV
9 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $16,859 4,279
2026-03-31 $6,980 2,759
2025-12-31 $6,124 1,932
2025-09-30 $9,392 2,812
2025-06-30 $16,061 5,181
2025-03-31 $5,375 2,194
2024-06-30 $3 1,262
2024-03-31 $3,164 899
2022-03-31 $425 100