Who Owns ARTIUS II ACQUISITION INC (AACBR)? -- Institutional Holders (2026-06-30)
35 institutions reported holding $4.2M of ARTIUS II ACQUISITION INC (AACBR) in SEC 13F filings for 2026-06-30. Largest institutional holders: HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND ($420,000), Sculptor Capital LP ($415,800), HGC Investment Management Inc. ($315,000), Polar Asset Management Partners Inc. ($315,000), AQR Arbitrage LLC ($314,904). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $420,000 | 2.0M | Hold |
| 2 | Sculptor Capital LP | $415,800 | 2.0M | Hold |
| 3 | HGC Investment Management Inc. | $315,000 | 1.5M | Hold |
| 4 | Polar Asset Management Partners Inc. | $315,000 | 1.5M | Hold |
| 5 | AQR Arbitrage LLC | $314,904 | 1.5M | Added |
| 6 | Linden Advisors LP | $312,813 | 1.4M | Hold |
| 7 | Harraden Circle Investments, LLC | $281,702 | 1.3M | Hold |
| 8 | Alberta Investment Management Corp | $205,800 | 980,000 | Hold |
| 9 | MILLENNIUM MANAGEMENT LLC | $147,000 | 700,000 | Hold |
| 10 | Magnetar Financial LLC | $126,000 | 600,000 | Hold |
| 11 | METEORA CAPITAL, LLC | $117,526 | 559,649 | Trimmed |
| 12 | TORONTO DOMINION BANK | $113,852 | 542,153 | Trimmed |
| 13 | Shaolin Capital Management LLC | $105,917 | 504,369 | Added |
| 14 | PICTON MAHONEY ASSET MANAGEMENT | $105,000 | 500,000 | Hold |
| 15 | HBK INVESTMENTS L P | $105,000 | 500,000 | Hold |
| 16 | MOORE CAPITAL MANAGEMENT, LP | $105,000 | 500,000 | Hold |
| 17 | BNP PARIBAS FINANCIAL MARKETS | $97,187 | 462,795 | Hold |
| 18 | COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | $76,484 | 364,209 | Hold |
| 19 | Alpine Global Management, LLC | $68,166 | 324,602 | Hold |
| 20 | GLAZER CAPITAL, LLC | $58,000 | 275,000 | Hold |
| 21 | Radcliffe Capital Management, L.P. | $56,886 | 250,049 | Trimmed |
| 22 | Clear Street Group Inc. | $47,212 | 224,818 | Trimmed |
| 23 | GRITSTONE ASSET MANAGEMENT LLC | $41,508 | 197,655 | Hold |
| 24 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $39,272 | 187,011 | New |
| 25 | Periscope Capital Inc. | $38,850 | 185,000 | Added |
Source: SEC Form 13F filings · as of 2026-06-30