Filing Manager
CITADEL ADVISORS LLC
Reporting Manager
Kenneth Griffin
Symbol
ATLX
Shares outstanding
26.4M shares
Disclosed Ownership
1.56M shares
Ownership
5.9%
Form type
SCHEDULE 13G
Filing time
15 Dec 2025, 17:03:41 UTC
Date of event
08 Dec 2025

Reporting Managers (7)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Citadel Advisors LLC 5.8% 1.53M 0 1.53M /s/ Seth Levy Seth Levy, Authorized Signatory
Citadel Advisors Holdings LP 5.8% 1.53M 0 1.53M /s/ Seth Levy Seth Levy, Authorized Signatory
Citadel GP LLC 5.8% 1.53M 0 1.53M /s/ Seth Levy Seth Levy, Authorized Signatory
Citadel Securities LLC 0.1% 28.3K 0 28.3K /s/ Seth Levy Seth Levy, Authorized Signatory
Citadel Securities Group LP 0.1% 28.3K 0 28.3K /s/ Seth Levy Seth Levy, Authorized Signatory
Citadel Securities GP LLC 0.1% 28.3K 0 28.3K /s/ Seth Levy Seth Levy, Authorized Signatory
Kenneth Griffin 5.9% 1.56M 0 1.56M /s/ Seth Levy Seth Levy, attorney-in-fact*