Latest Period
Q4 2025
Security Snapshot
Artius II Acquisition Inc. - Class A Ordinary Shares, par value $0.0001 per share (AACBU) Institutional Ownership
CUSIP: G0509J107
13F Institutional Holders and Ownership History from Q1 2025 to Q4 2025
Institutions Reporting
3
Shares (Excl. Options)
449,711
Price
$10.60
- Type / Class
- Equity / Class A Ordinary Shares, par value $0.0001 per share
- Symbol
- AACBU on Nasdaq
- Shares outstanding
- 22,172,949
- Price per share
- $10.65
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 449,711
- Total reported value
- $4,766,922
- % of total 13F portfolios
- 0%
- Share change
- +4,320
- Value change
- +$45,825
- Number of holders
- 3
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- AACBU - Artius II Acquisition Inc. - Class A Ordinary Shares, par value $0.0001 per share is tracked under CUSIP G0509J107.
- 3 institutions reported positions in Q4 2025.
- 3 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 3 to 3 between Q3 2025 and Q4 2025.
- Reported value moved from $4,609,797 to $4,766,922.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Official SEC Source
Backed by Form 13F
Ownership context comes from SEC Form 13F and, when available, Schedule 13D/13G filings.
See Original FilingInvestment Quick Answers
What is CUSIP G0509J107?
CUSIP G0509J107 identifies AACBU - Artius II Acquisition Inc. - Class A Ordinary Shares, par value $0.0001 per share in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Continue Investment Research
- Latest 13F filings for new institutional portfolio disclosures.
- Latest Schedule 13D/13G reports for activist and beneficial ownership updates.
- Latest 10-Q/10-K reports to cross-check issuer fundamentals.
- Recent insider transactions for management buying/selling context.
- SEC investors directory and top value investors for manager-level discovery.
- All institutional ownership pages to compare adjacent CUSIP pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP G0509J107:
Significant Owners of Artius II Acquisition Inc. - Class A Ordinary Shares, par value $0.0001 per share (AACBU) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Polar Asset Management Partners Inc. | 6.3% | $15,120,000 | 1,500,000 | Polar Asset Management Partners Inc. | 31 Mar 2025 | |||
| GLAZER CAPITAL, LLC | 5.5% | $12,284,133 | 1,218,664 | Glazer Capital, LLC | 31 Mar 2025 | |||
| Sculptor Capital LP | 4.5% | -24% | $10,590,000 | -$4,236,000 | 1,000,000 | -29% | Sculptor Capital LP | 30 Sep 2025 |
As of 31 Dec 2025, 3 institutional investors reported holding 449,711 shares of Artius II Acquisition Inc. - Class A Ordinary Shares, par value $0.0001 per share (AACBU). This represents 2% of the company’s total 22,172,949 outstanding shares.