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GROUP ONE TRADING LLC

Position in DYN — Dyne Therapeutics, Inc.

CIK 932540 CHICAGO, IL

Position in DYN

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$8,284
-$11,169 QoQ
Shares Held
373
-65.2% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#206
of 245 holders
Holding Since
Sep 2023
11 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in DYN Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $113,695,832 across 200 Biotechnology names. DYN ranks #133 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in DYN

Export CSV
11 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $8,284 373
2026-03-31 $19,453 1,073
2025-12-31 $12,714 650
2025-09-30 $24,781 1,959
2025-06-30 $20,239 2,126
2025-03-31 $36,881 3,526
2024-12-31 $14,442 613
2024-06-30 $25,585 725
2024-03-31 $120,487 4,244
2023-12-31 $1,045,646 78,620
2023-09-30 $540,592 60,334