DOSSIER · 13F Holders · Q1 2026

ATAIBECKLEY INC

2 institutions still hold ATAIBECKLEY INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 04650F901·2 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$5M
visible holders
Holders
2
filers reporting
Concentration
68.73%
GROUP ONE TRADING LLC #1
top holder share
AI Holders Summary · Q1 2026

2 institutions reported ATAIBECKLEY INC in Q1 2026. GROUP ONE TRADING LLC leads at 68.7% 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
$3M938K0.01%Q1 2026
02
SIMPLEX TRADING, LLC
CIK 0001488542
$2M427K0.00%Q1 2026