DOSSIER · 13F Holders · Q2 2026

ARTIUS II ACQUISITION INC

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

CUSIP G0509J107·5 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$6M
visible holders
Holders
5
filers reporting
Concentration
66.53%
LMR Partners LLP #1
top holder share
AI Holders Summary · Q2 2026

5 institutions reported ARTIUS II ACQUISITION INC in Q2 2026. LMR Partners LLP leads at 66.5% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
LMR Partners LLP
CIK 0001578621
$4M400K0.02%Q2 2026
02
MIZUHO SECURITIES USA LLC
CIK 0001513006
$2M158K0.03%Q1 2025
03
Clear Street Group Inc.
CIK 0001881567
$564K53K0.00%Q2 2026
04
UBS Group AG
CIK 0001610520
$737690.00%Q2 2026
05
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025