Artius II Acquisition Inc. - Class A Common Stock (AACB)

CUSIP: G0509J115

Q2 2025 13F Holders as of 30 Jun 2025

Security identity
Security type / class
Equity / Class A Common Stock
Shares outstanding
22,189,349
Holder snapshot
Total 13F shares
18,992,045
Share change
+18,842,027
Total reported value
$192,176,114
Reported price per share
$10.12
Number of holders
41
Value change
+$190,675,934
Number of buys
40

Security key

G0509J115

Report period

Q2 2025

Institutions

41

Top holders

10

AACB full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2025 Artius II Acquisition Inc. SEC filings Artius II Acquisition Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top shareholders of AACB - Artius II Acquisition Inc. - Class A Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Lead holder
Artius II Acquisition Par...
13D/G signal
Artius II Acquisition Par...
Evidence rows
33
Latest as of
30 Jun 2025
13D/G 3/4/5 13F Lead comparable stake: 20% 13D/G row: Artius II Acquisition Partners LLC Showing 1-8 of 33 holder rows.
Holder Evidence Ownership % Position 12M Net Δ As of
Artius II Acquisition Partners LLC
13D/G 3/4/5
10%+ Owner
13D/G 3/4/5
20%
$56,069,000
5,675,000 shares
 $0 14 Feb 2025
AQR CAPITAL MANAGEMENT LLC
13D/G
13D/G
6.4%
$15,202,315
1,502,205 shares
 -$4,835,285 30 Jun 2025
Polar Asset Management Partners Inc.
13D/G 13F
Company
13D/G 13F
6.3%
$15,120,000
1,500,000 shares
 $0 31 Mar 2025
GLAZER CAPITAL, LLC
13D/G 13F
Company
13D/G 13F
5.5%
$12,284,133
1,218,664 shares
 $0 31 Mar 2025
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND
13F
Company
13F
9%
$20,220,000
2,000,000 shares
 — 31 Mar 2025
AQR Arbitrage LLC
13F
Company
13F
8.9%
$20,017,800
1,980,000 shares
 — 31 Mar 2025
Sculptor Capital LP
13F
Company
13F
8.9%
$19,988,100
1,980,000 shares
 — 31 Mar 2025
HGC Investment Management Inc.
13F
Company
13F
6.8%
$15,120,000
1,500,000 shares
 — 31 Mar 2025
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
41
Shares
18,992,045
Rows loaded
41
Investor Option Weight % Change % Reported value * Price Shares Share Change Activity Report Period

* Reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that failed the local validity check.

Compare Q2 2025 vs Q4 2025 Across Filers

Q4 2025 holders
47
Q2 2025 holders
41
Holder diff
-6
Investor Q4 2025 Shares Q2 2025 Shares Share Diff Share Chg % Q4 2025 value Q2 2025 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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