DOSSIER · 13F Holders · Q2 2026

FORTUNA MNG CORP

5 institutions still hold FORTUNA MNG CORP as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 349942902·5 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$11M
visible holders
Holders
5
filers reporting
Concentration
63.62%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q2 2026

5 institutions reported FORTUNA MNG CORP in Q2 2026. GROUP ONE TRADING LLC leads at 63.6% 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
$7M855K0.01%Q2 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$2M278K0.00%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$2M200K0.00%Q2 2026
04
SG Americas Securities, LLC
CIK 0001313360
$90K254K0.00%Q1 2026
05
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025