DOSSIER · 13F Holders · Q2 2026

STUBHUB HLDGS INC

4 institutions still hold STUBHUB HLDGS INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 86384P909·4 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$25M
visible holders
Holders
4
filers reporting
Concentration
42.47%
SIMPLEX TRADING, LLC #1
top holder share
AI Holders Summary · Q2 2026

4 institutions reported STUBHUB HLDGS INC in Q2 2026. SIMPLEX TRADING, LLC leads at 42.5% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
SIMPLEX TRADING, LLC
CIK 0001488542
$11M838K0.01%Q2 2026
02
GROUP ONE TRADING LLC
CIK 0000932540
$8M591K0.01%Q2 2026
03
IMC-Chicago, LLC
CIK 0001452861· Market maker
$7M544K0.00%Q2 2026
04
Marathon Trading Investment Management LLC
CIK 0001572748
$1K1000.00%Q2 2026