DOSSIER · 13F Holders · Q3 2026

DISC MEDICINE INC

3 institutions still hold DISC MEDICINE INC as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 254604901·3 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$2M
visible holders
Holders
3
filers reporting
Concentration
85.95%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q3 2026

3 institutions reported DISC MEDICINE INC in Q3 2026. GROUP ONE TRADING LLC leads at 85.9% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
GROUP ONE TRADING LLC
CIK 0000932540
$2M32K0.00%Q3 2026
02
SIMPLEX TRADING, LLC
CIK 0001488542
$340K5K0.00%Q3 2026
03
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025