AACBR Artius II Acquisition Inc. - Rights
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Institutional owners (13F) 35 filers · $4.3M total · As of June 30, 2026
Institutions that report holding this stock in their quarterly SEC Form 13F. Long positions only; a single filer may appear twice for separate option legs. Large offsetting put/call legs typically reflect market-making or hedged inventory, not directional conviction.
| New positions | Exited positions | Increased | Decreased | Net shares change |
|---|---|---|---|---|
| 1 (+1 vs prior Q) | 1 (0 vs prior Q) | 4 (+3 vs prior Q) | 5 (-5 vs prior Q) | +93K |
Compared to Q1 2026. SEC Form 13F filings are due within 45 days of quarter-end plus a short buffer for late filers — quarters still inside that window are skipped in favor of the most recent fully-reported pair.
| Institution | Value | Shares | % of tracked 13F | Type |
|---|---|---|---|---|
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $420,000 | 2,000,000 | 9.83% | Shares |
| Sculptor Capital LP | $415,800 | 1,980,000 | 9.73% | Shares |
| HGC Investment Management Inc. | $315,000 | 1,500,000 | 7.37% | Shares |
| Polar Asset Management Partners Inc. | $315,000 | 1,500,000 | 7.37% | Shares |
| AQR Arbitrage LLC | $314,904 | 1,499,545 | 7.37% | Shares |
| Linden Advisors LP | $312,813 | 1,375,000 | 7.32% | Shares |
| Harraden Circle Investments, LLC | $281,702 | 1,341,436 | 6.59% | Shares |
| Alberta Investment Management Corp | $205,800 | 980,000 | 4.82% | Shares |
| MILLENNIUM MANAGEMENT LLC | $147,000 | 700,000 | 3.44% | Shares |
| Magnetar Financial LLC | $126,000 | 600,000 | 2.95% | Shares |
| Meteora Capital, LLC | $117,526 | 559,649 | 2.75% | Shares |
| TORONTO DOMINION BANK | $113,852 | 542,153 | 2.67% | Shares |
| Shaolin Capital Management LLC | $105,917 | 504,369 | 2.48% | Shares |
| PICTON MAHONEY ASSET MANAGEMENT | $105,000 | 500,000 | 2.46% | Shares |
| MOORE CAPITAL MANAGEMENT, LP | $105,000 | 500,000 | 2.46% | Shares |
| HBK INVESTMENTS L P | $105,000 | 500,000 | 2.46% | Shares |
| BNP PARIBAS FINANCIAL MARKETS | $97,187 | 462,795 | 2.28% | Shares |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | $76,484 | 364,209 | 1.79% | Shares |
| Alpine Global Management, LLC | $68,166 | 324,602 | 1.60% | Shares |
| Radcliffe Capital Management, L.P. | $56,886 | 250,049 | 1.33% | Shares |
| CLEAR STREET LLC | $55,258 | 230,242 | 1.29% | Shares |
| Clear Street Group Inc. | $47,212 | 224,818 | 1.11% | Shares |
| GRITSTONE ASSET MANAGEMENT LLC | $41,508 | 197,655 | 0.97% | Shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $39,272 | 187,011 | 0.92% | Shares |
| Periscope Capital Inc. | $38,850 | 185,000 | 0.91% | Shares |
| Schonfeld Strategic Advisors LLC | $34,383 | 163,729 | 0.80% | Shares |
| Context Capital Management, LLC | $34,060 | 162,191 | 0.80% | Shares |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | $32,986 | 299,872 | 0.77% | Shares |
| ATW SPAC MANAGEMENT LLC | $30,076 | 125,316 | 0.70% | Shares |
| BOOTHBAY FUND MANAGEMENT, LLC | $26,324 | 125,353 | 0.62% | Shares |
| K2 PRINCIPAL FUND, L.P. | $23,521 | 112,006 | 0.55% | Shares |
| DLD Asset Management, LP | $22,410 | 106,713 | 0.52% | Shares |
| Centiva Capital, LP | $21,000 | 100,000 | 0.49% | Shares |
| Verition Fund Management LLC | $19,762 | 94,103 | 0.46% | Shares |
| GLAZER CAPITAL, LLC | $58 | 275,000 | 0.00% | Shares |