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

CUSIP: G0509J115

Q2 2025 13F Holders as of 30 Jun 2025

Security type / class
Equity / Class A Common Stock
Total 13F shares
18,992,045
Total 13F value
$192,176,114
Holder snapshot 5 signals
Share change
+18,842,027
SEC-reported price per share
$10.12
Number of holders
41
Value change
+$190,675,934
Number of buys
40
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
22,189,349

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 reported holders 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.

Comparable stake leader
Artius II Acquisition Par...
Disclosed value leader
Artius II Acquisition Par...
Comparable rows
15/15
Latest evidence
30 Jun 2025
13D/G 3/4/5 13F Lead comparable stake: 20% 13D/G row: Artius II Acquisition Partners LLC Showing 1-6 of 15 holder rows.

Quick read

Artius II Acquisition Partners LLC leads the comparable SEC ownership view at 20%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Artius II Acquisition Partners LLC's linked filing trail.
Comparable ownership Top 5
Artius II Acquisition Partners LLC 20%
AQR CAPITAL MANAGEMENT LLC 6.4%
Polar Asset Management Partners Inc. 6.3%
GLAZER CAPITAL, LLC 5.5%
HEALTHCARE OF ONTARIO PENSION PLA... 9%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 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
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 available
41
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-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 did not pass the local price check.

Compare Q2 2025 vs Q1 2026 Across Filers

Q1 2026 holders
52
Q2 2025 holders
41
Holder diff
-11
Investor Q1 2026 Shares Q2 2025 Shares Share Diff Share Chg % Q1 2026 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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