# ARTIUS II ACQUISITION INC (AACB)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/AACB/

- Reporting holders: 51
- Reported value: $230.9M
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [HGC Investment Management Inc.](https://holderbook.com/funds/1711200-hgc-investment-management-inc/) | $15.7M | 1,500,000 | 3.1% | 4 |
| [AQR Arbitrage LLC](https://holderbook.com/funds/1167456-aqr-arbitrage-llc/) | $15.1M | 1,440,225 | 0.2% | 5 |
| [GLAZER CAPITAL, LLC](https://holderbook.com/funds/1076809-glazer-capital-llc/) | $13.6M | 1,295,130 | 0.3% | 5 |
| [HBK INVESTMENTS L P](https://holderbook.com/funds/1011443-hbk-investments-l-p/) | $10.5M | 999,996 | 0.1% | 5 |
| [Linden Advisors LP](https://holderbook.com/funds/1279396-linden-advisors-lp/) | $10.5M | 1,000,000 | 0.1% | 5 |
| [Westchester Capital Management, LLC](https://holderbook.com/funds/1512805-westchester-capital-management-llc/) | $10.4M | 995,939 | 0.5% | 5 |
| [Alberta Investment Management Corp](https://holderbook.com/funds/1463559-alberta-investment-management-corp/) | $10.3M | 980,000 | 0.1% | 5 |
| [HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND](https://holderbook.com/funds/1535845-healthcare-of-ontario-pension-plan-trust-fund/) | $8.9M | 850,000 | 0.0% | 5 |
| [Polar Asset Management Partners Inc.](https://holderbook.com/funds/1326389-polar-asset-management-partners-inc/) | $8.4M | 800,000 | 0.1% | 5 |
| [PICTON MAHONEY ASSET MANAGEMENT](https://holderbook.com/funds/1539041-picton-mahoney-asset-management/) | $7.9M | 750,000 | 0.1% | 5 |
| [TWO SIGMA INVESTMENTS, LP](https://holderbook.com/funds/1179392-two-sigma-investments-lp/) | $7.6M | 725,000 | 0.0% | 5 |
| [Radcliffe Capital Management, L.P.](https://holderbook.com/funds/1218275-radcliffe-capital-management-l-p/) | $7.1M | 678,671 | 0.5% | 5 |
| [D. E. Shaw & Co., Inc.](https://holderbook.com/funds/1009207-d-e-shaw-co-inc/) | $6.3M | 600,000 | 0.0% | 5 |
| [Magnetar Financial LLC](https://holderbook.com/funds/1352851-magnetar-financial-llc/) | $6.3M | 600,000 | 0.1% | 5 |
| [Hudson Bay Capital Management LP](https://holderbook.com/funds/1393825-hudson-bay-capital-management-lp/) | $5.8M | 550,000 | 0.0% | 3 |
| [Verition Fund Management LLC](https://holderbook.com/funds/1454027-verition-fund-management-llc/) | $5.4M | 514,714 | 0.0% | 4 |
| [Sculptor Capital LP](https://holderbook.com/funds/1054587-sculptor-capital-lp/) | $5.2M | 500,000 | 0.0% | 5 |
| [MOORE CAPITAL MANAGEMENT, LP](https://holderbook.com/funds/1448574-moore-capital-management-lp/) | $5.2M | 500,000 | 0.1% | 5 |
| [Governors Lane LP](https://holderbook.com/funds/1644187-governors-lane-lp/) | $5.2M | 500,000 | 0.4% | 5 |
| [GOLDMAN SACHS GROUP INC](https://holderbook.com/funds/886982-goldman-sachs-group-inc/) | $4.9M | 462,806 | 0.0% | 5 |
| [Periscope Capital Inc.](https://holderbook.com/funds/1695320-periscope-capital-inc/) | $4.5M | 425,000 | 0.4% | 5 |
| [COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS](https://holderbook.com/funds/1083190-commonwealth-of-pennsylvania-public-school-empls-retrmt-sys/) | $4.2M | 398,075 | 0.0% | 5 |
| [BERKLEY W R CORP](https://holderbook.com/funds/11544-berkley-w-r-corp/) | $4.2M | 396,960 | 0.2% | 5 |
| [First Trust Capital Management L.P.](https://holderbook.com/funds/1604488-first-trust-capital-management-l-p/) | $4.0M | 380,000 | 0.2% | 5 |
| [TORONTO DOMINION BANK](https://holderbook.com/funds/947263-toronto-dominion-bank/) | $3.9M | 375,190 | 0.0% | 5 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 51 | $230.9M |
| Q1 2026 | 52 | $219.8M |
| Q4 2025 | 47 | $215.0M |
| Q3 2025 | 43 | $214.1M |
| Q2 2025 | 41 | $192.2M |