DOSSIER · 13F Holders · Q3 2026

LEAP THERAPEUTICS INC

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

CUSIP 52187K950·4 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$3M
visible holders
Holders
4
filers reporting
Concentration
58.27%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q3 2026

4 institutions reported LEAP THERAPEUTICS INC in Q3 2026. GROUP ONE TRADING LLC leads at 58.3% 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
$2M538K0.00%Q3 2026
02
SIMPLEX TRADING, LLC
CIK 0001488542
$962K289K0.00%Q3 2026
03
HRT FINANCIAL LP
CIK 0001475597
$322K97K0.00%Q3 2026
04
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025