Artius II Acquisition Inc. - AACB
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| HGC Investment Management Inc. | History | No change | 1,500,000 | 15,510 | 3.44% | 3.28% | 1 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| AQR Arbitrage LLC | History | Reduced | 1,432,183 | 14,794 | 0.24% | 0.32% | 2 | -58,022 | -3.89% | Q1 2026 | May 15, 2026 |
| GLAZER CAPITAL, LLC | History | Added to | 1,295,029 | 13,391 | 0.28% | 0.31% | 3 | +139,868 | 12.11% | Q1 2026 | May 14, 2026 |
| LINDEN ADVISORS LP | History | No change | 1,000,000 | 10,330 | 0.06% | 0.06% | 4 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Westchester Capital Management, LLC | History | No change | 995,939 | 10,288 | 0.47% | 0.43% | 5 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Alberta Investment Management Corp | History | No change | 980,000 | 10,123 | 0.06% | 0.06% | 6 | 0 | 0.0% | Q1 2026 | Apr 28, 2026 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | History | No change | 850,000 | 8,780 | 0.01% | 0.01% | 7 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| Polar Asset Management Partners Inc. | History | Reduced | 800,000 | 8,272 | 0.17% | 0.11% | 8 | -12,332 | -1.52% | Q1 2026 | May 15, 2026 |
| PICTON MAHONEY ASSET MANAGEMENT | History | No change | 750,000 | 7,755 | 0.06% | 0.06% | 9 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | No change | 725,000 | 7,496 | 0.01% | 0.01% | 10 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Radcliffe Capital Management, L.P. | History | Added to | 678,671 | 7,017 | 0.53% | 0.37% | 11 | +11,552 | 1.73% | Q1 2026 | May 15, 2026 |
| Magnetar Financial LLC | History | No change | 600,000 | 6,204 | 0.06% | 0.06% | 12 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| D. E. Shaw & Co., Inc. | History | No change | 600,000 | 6,198 | 0.0% | 0.0% | 13 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Shaolin Capital Management LLC | History | Added to | 550,000 | 5,687 | 0.21% | 0.16% | 14 | +60,000 | 12.24% | Q1 2026 | May 15, 2026 |
| Hudson Bay Capital Management LP | History | No change | 550,000 | 5,681 | 0.02% | 0.02% | 15 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| Sculptor Capital LP | History | No change | 500,000 | 5,170 | 0.05% | 0.05% | 16 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| MOORE CAPITAL MANAGEMENT, LP | History | No change | 500,000 | 5,170 | 0.11% | 0.07% | 17 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| HBK INVESTMENTS L P | History | No change | 499,998 | 5,169 | 0.05% | 0.04% | 18 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | History | No change | 462,806 | 4,785 | 0.0% | 0.0% | 19 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| LMR Partners LLP | History | No change | 400,000 | 4,280 | 0.01% | 0.01% | 20 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | History | Reduced | 398,075 | 4,112 | 0.02% | 0.02% | 21 | -1,925 | -0.48% | Q1 2026 | May 01, 2026 |
| BERKLEY W R CORP | History | No change | 396,960 | 4,104 | 0.22% | 0.19% | 22 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| First Trust Capital Management L.P. | History | No change | 380,000 | 3,929 | 0.21% | 0.24% | 23 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| PERISCOPE CAPITAL INC. | History | Reduced | 375,000 | 3,877 | 0.43% | 0.53% | 24 | -75,000 | -16.67% | Q1 2026 | May 13, 2026 |
| Jain Global LLC | History | Reduced | 366,849 | 3,789 | 0.02% | 0.02% | 25 | -133,151 | -26.63% | Q1 2026 | May 15, 2026 |
| MANGROVE PARTNERS IM, LLC | History | Reduced | 356,172 | 3,682 | 0.3% | 0.38% | 26 | -93,826 | -20.85% | Q1 2026 | May 15, 2026 |
| Verition Fund Management LLC | History | Reduced | 354,691 | 3,663 | 0.02% | 0.01% | 27 | -2,666 | -0.75% | Q1 2026 | May 15, 2026 |
| RLH Capital LLC | History | New | 320,996 | 3,319 | 1.69% | — | 28 | +320,996 | New | Q1 2026 | Apr 28, 2026 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | History | No change | 297,500 | 3,076 | 0.15% | 0.14% | 29 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Governors Lane LP | History | No change | 250,000 | 2,585 | 0.17% | 0.15% | 30 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Schonfeld Strategic Advisors LLC | History | Added to | 245,631 | 2,539 | 0.02% | 0.01% | 31 | +26,237 | 11.96% | Q1 2026 | May 15, 2026 |
| Fort Baker Capital Management LP | History | Added to | 232,736 | 2,406 | 0.19% | 0.23% | 32 | +25,000 | 12.03% | Q1 2026 | May 15, 2026 |
| TORONTO DOMINION BANK | History | Reduced | 225,000 | 2,326 | 0.0% | 0.01% | 33 | -141,938 | -38.68% | Q1 2026 | May 15, 2026 |
| Quarry LP | History | Added to | 210,500 | 2,176 | 0.39% | 0.18% | 34 | +100,000 | 90.5% | Q1 2026 | May 15, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | No change | 200,000 | 2,068 | 0.0% | 0.0% | 35 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| GRITSTONE ASSET MANAGEMENT LLC | History | No change | 197,656 | 2,043 | 2.18% | 1.94% | 36 | 0 | 0.0% | Q1 2026 | May 05, 2026 |
| SONA ASSET MANAGEMENT (US) LLC | History | New | 172,874 | 1,787 | 0.04% | — | 37 | +172,874 | New | Q1 2026 | May 15, 2026 |
| O'Connor Alternative Investments LLC | History | New | 160,000 | 1,652 | 0.14% | — | 38 | +160,000 | New | Q1 2026 | May 15, 2026 |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | History | No change | 160,000 | 1,648 | 0.19% | 0.19% | 39 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| DLD Asset Management, LP | History | No change | 140,894 | 1,456 | 0.13% | 0.11% | 40 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| Context Capital Management, LLC | History | No change | 112,191 | 1,160 | 0.03% | 0.03% | 41 | 0 | 0.0% | Q1 2026 | May 07, 2026 |
| METEORA CAPITAL, LLC | History | Added to | 109,223 | 1,129 | 0.08% | 0.06% | 42 | +38,450 | 54.33% | Q1 2026 | May 15, 2026 |
| Centiva Capital, LP | History | No change | 100,000 | 1,033 | 0.01% | 0.01% | 43 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| MIZUHO SECURITIES USA LLC | History | Reduced | 100,196 | 1,032 | 0.02% | 0.03% | 44 | -51,822 | -34.09% | Q1 2026 | May 11, 2026 |
| Clear Street Group Inc. | History | Added to | 89,734 | 946 | 0.0% | 0.0% | 45 | +2,123 | 2.42% | Q1 2026 | May 15, 2026 |
| L1 Global Manager Pty Ltd | History | No change | 75,000 | 775 | 0.52% | 0.51% | 46 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | New | 55,222 | 570 | 0.0% | — | 47 | +55,222 | New | Q1 2026 | May 12, 2026 |
| BOOTHBAY FUND MANAGEMENT, LLC | History | No change | 45,316 | 468 | 0.01% | 0.01% | 48 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Crossingbridge Advisors, LLC | History | New | 25,000 | 258 | 0.05% | — | 49 | +25,000 | New | Q1 2026 | May 14, 2026 |
| ABC ARBITRAGE SA | History | No change | 20,000 | 206 | 0.03% | 0.02% | 50 | 0 | 0.0% | Q1 2026 | May 04, 2026 |
| Virtu Financial LLC | History | New | 18,464 | 191 | 0.01% | — | 51 | +18,464 | New | Q1 2026 | May 14, 2026 |
| WOLVERINE ASSET MANAGEMENT LLC | History | Reduced | 16,626 | 171 | 0.0% | 0.0% | 52 | -36,531 | -68.72% | Q1 2026 | May 04, 2026 |
| FNY Investment Advisers, LLC | History | Reduced | 112 | 1 | 0.0% | 0.0% | 53 | -100 | -47.17% | Q1 2026 | Apr 15, 2026 |
| MORGAN STANLEY | History | Reduced | 71 | 0 | — | — | — | -22 | -23.66% | Q1 2026 | May 15, 2026 |
| UBS Group AG | History | Reduced | 70 | 0 | — | — | — | -3 | -4.11% | Q1 2026 | May 05, 2026 |