DOSSIER · 13F Holders · Q2 2026

ALPHA TAU MEDICAL LTD

3 institutions still hold ALPHA TAU MEDICAL LTD as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP M0740A958·3 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$525K
visible holders
Holders
3
filers reporting
Concentration
68.11%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q2 2026

3 institutions reported ALPHA TAU MEDICAL LTD in Q2 2026. GROUP ONE TRADING LLC leads at 68.1% 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
$357K28K0.00%Q2 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$147K12K0.00%Q2 2026
03
SIMPLEX TRADING, LLC
CIK 0001488542
$20K2K0.00%Q2 2026