ARTIUS II ACQUISITION INC

Historical 13F Holders

Symbol
AACB
CUSIP
G0509J115
All holders as of
Q2 2026
Type
Equity
Class
SHS CL A
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each filer's latest filing for G0509J115 since 12/18/2024, largest first.

Filer % of Class Filed
Artius II Acquisition Partners LLC 13G
20.5% 2/14/2025
Event 2/14/2025
HGC Investment Management Inc. 13G 6.8% 2/17/2026
Event 12/31/2025
AQR Capital Management, LLC 13G/A
6.4% 8/14/2025
Event 6/30/2025
Under 5%, checked the "5 percent or less" box, or amended by a later filing (2)
Healthcare of Ontario Pension Plan Trust Fund 13G/A 3.8% 2/13/2026
Event 12/31/2025
Polar Asset Management Partners Inc. 13G/A 3.6% 2/17/2026
Event 12/31/2025

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q2 52 21.3 M $223 M
2026 Q1 52 21.3 M $220 M
2025 Q4 47 20.9 M $215 M
2025 Q3 43 21.1 M $214 M
2025 Q2 41 20.0 M $202 M