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SIMPLEX TRADING, LLC

Position in APT — Alpha Pro Tech Ltd

CIK 1488542 CHICAGO, IL

Position in APT

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$94,258
+$94,253 QoQ
Shares Held
16,772
+1311.8% QoQ
Ownership
0.164%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#17
of 41 holders
Holding Since
Jun 2020
15 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in APT Over Time

Shares Held

Position Value (USD)

Position in Building Products & Equipment

Industrials · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $7,367,802 across 17 Building Products & Equipment names. APT ranks #9 (1.3% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in APT

Export CSV
15 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $94,258 16,772
2025-03-31 $5 1,188
2024-09-30 $34,029 5,970
2024-06-30 $49,687 9,034
2024-03-31 $141,329 22,649
2022-09-30 $110,358 27,249
2022-06-30 $199,326 44,692
2022-03-31 $191,133 45,508
2021-12-31 $149,942 25,116
2021-09-30 $33,454 4,971
2021-06-30 $42,601 4,971
2021-03-31 $250,656 25,682
2020-12-31 $11,607 1,041
2020-09-30 $223,296 15,108
2020-06-30 $185,460 10,478