Artius II Acquisition Inc. Class AAACB
13F holders, Q4 2025 (December 31)At the end of Q4 2025, 47 institutions reported holding Artius II Acquisition Inc. Class A (AACB) in their 13F filings, up 4 from Q3 2025. 5 opened new positions and 1 sold out. The largest holders were HGC Investment Management Inc. ($15.4M), AQR Arbitrage LLC ($15.3M) and Glazer Capital, LLC ($11.9M). 2 famous investors held it, including David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Artius II Acquisition Inc. Class A
- CUSIP
- G0509J115
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 5 | $9.9M |
| Exits | 1 | $133K |
All 13F filers, Q3 2025 → Q4 2025: 1,731,795 shares bought and 1,953,571 shares sold, net −221,776 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 47 holders
| HGC Investment Management Inc. | 3.30% | No change | 1,500,000 | $15.4M |
| AQR Arbitrage LLC | 0.41% | No change | 1,490,205 | $15.3M |
| Glazer Capital, LLC | 0.35% | Reduce -3.3% | 1,155,161 | $11.9M |
| Linden Advisors LP | 0.78% | No change | 1,000,000 | $10.3M |
| Westchester Capital Management, LLC | 0.48% | No change | 995,939 | $10.3M |
| Alberta Investment Management Corp | 0.07% | No change | 980,000 | $10.1M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.01% | Reduce -57.5% | 850,000 | $8.8M |
| Polar Asset Management Partners Inc. | 0.22% | Reduce -18.8% | 812,332 | $8.4M |
| Picton Mahoney Asset Management | 0.08% | No change | 750,000 | $7.7M |
| Two Sigma Investments, LP | 0.01% | No change | 725,000 | $7.5M |
| Radcliffe Capital Management, L.P. | 0.97% | Add +2.6% | 667,119 | $6.9M |
| Magnetar Financial LLC | 0.07% | No change | 600,000 | $6.2M |
| D. E. Shaw & Co. | 0.01% | No change | 600,000 | $6.2M |
| Hudson Bay Capital Management LP | 0.04% | New | 550,000 | $5.7M |
| Moore Capital Management, LP | 0.11% | No change | 500,000 | $5.2M |
| Sculptor Capital LP | 0.11% | Reduce -50.0% | 500,000 | $5.2M |
| Jain Global LLC | 0.05% | No change | 500,000 | $5.2M |
| HBK Investments L P | 0.06% | No change | 499,998 | $5.1M |
| Shaolin Capital Management LLC | 0.66% | Add +31.8% | 490,000 | $5.0M |
| Goldman Sachs Group Inc. | 0.00% | Add +0.0% | 462,806 | $4.8M |
| Periscope Capital Inc. | 0.94% | Add +4.0% | 450,000 | $4.6M |
| Mangrove Partners Im, LLC | 0.38% | Reduce 0.0% | 449,998 | $4.6M |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.02% | No change | 400,000 | $4.1M |
| Berkley W R Corp. | 0.23% | No change | 396,960 | $4.1M |
| First Trust Capital Management L.P. | 0.24% | No change | 380,000 | $3.9M |
| Toronto Dominion Bank | 0.01% | Add +144.6% | 366,938 | $3.8M |
| Verition Fund Management LLC | 0.02% | Add +537.0% | 357,357 | $3.7M |
| Rivernorth Capital Management, LLC | 0.15% | Reduce -0.8% | 297,500 | $3.1M |
| Governors Lane LP | 0.24% | No change | 250,000 | $2.6M |
| Schonfeld Strategic Advisors LLC | 0.01% | Reduce -7.2% | 219,394 | $2.3M |
| Fort Baker Capital Management LP | 0.29% | New | 207,736 | $2.1M |
| Millennium Management | 0.00% | No change | 200,000 | $2.1M |
| Gritstone Asset Management LLC | 1.99% | No change | 197,656 | $2.0M |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | 0.05% | No change | 160,000 | $1.6M |
| Mizuho Securities USA LLC | 0.03% | Add +1.3% | 152,018 | $1.5M |
| DLD Asset Management, LP | 0.50% | Add +244.5% | 140,894 | $1.5M |
| Context Capital Management, LLC | 0.38% | No change | 112,191 | $1.2M |
| Quarry LP | 0.19% | New | 110,500 | $1.1M |
| Centiva Capital, LP | 0.06% | No change | 100,000 | $1.0M |
| L1 Global Manager Pty Ltd | 0.51% | — | 75,000 | $773K |
| Meteora Capital, LLC | 0.06% | New | 70,773 | $729K |
| Wolverine Asset Management LLC | 0.03% | Reduce -20.2% | 53,157 | $548K |
| Boothbay Fund Management, LLC | 0.01% | Reduce -39.8% | 45,316 | $467K |
| Clear Street Group Inc. | 0.00% | No change | 37,973 | $391K |
| Abc Arbitrage SA | 0.02% | New | 20,000 | $206K |
| FNY Investment Advisers, LLC | 0.00% | Reduce -34.2% | 212 | $2K |
| Morgan Stanley | 0.00% | Add +19.2% | 93 | $958 |
"% of holder's portfolio" is AACB's weight in each manager's 13F, not the share of Artius II Acquisition Inc. Class A the manager owns.