DOSSIER · 13F Holders · Q2 2026

ATAIBECKLEY INC

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

CUSIP 04650F901·2 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$6M
visible holders
Holders
2
filers reporting
Concentration
68.09%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q2 2026

2 institutions reported ATAIBECKLEY INC 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
$4M784K0.01%Q2 2026
02
SIMPLEX TRADING, LLC
CIK 0001488542
$2M367K0.00%Q2 2026