Artius II AcquisitionAACBRPreferred / convertible

13F holders, Q2 2026 (June 30)
33holders −1
1new positions
2sold out
1famous investor
$0.21avg. 13F price*

At the end of Q2 2026, 33 institutions reported holding Artius II Acquisition Inc. (AACBR) in their 13F filings, down 1 from Q1 2026. 1 opened new positions and 2 sold out. The largest holders were Healthcare of Ontario Pension Plan Trust Fund ($420K), Sculptor Capital LP ($416K) and Polar Asset Management Partners Inc. ($315K). One famous investor held it Israel Englander ( of Millennium Management's portfolio).

Company
Artius II Acquisition Inc.
CUSIP
G0509J123
Latest filing quarter
Q2 2026

History

Number of 13F holders

010203040 Q2 2025: 32Q2 2025Q3 2025: 35Q3 2025Q4 2025: 34Q4 2025Q1 2026: 34Q1 2026Q2 2026: 33Q2 2026

Total Exit/New Position Q1 2026 → Q2 2026

InstitutionsTotal Value
New Positions1$39K
Exits2$45K

All 13F filers, Q1 2026 → Q2 2026: 213,557 shares bought and 220,420 shares sold, net −6,863 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 33 holders
Healthcare of Ontario Pension Plan Trust Fund — No change 2,000,000 $420K
Sculptor Capital LP — No change 1,980,000 $416K
Polar Asset Management Partners Inc. — No change 1,500,000 $315K
HGC Investment Management Inc. — No change 1,500,000 $315K
AQR Arbitrage LLC — Add +0.8% 1,499,545 $315K
Linden Advisors LP — No change 1,375,000 $313K
Harraden Circle Investments, LLC — No change 1,341,436 $282K
Alberta Investment Management Corp — No change 980,000 $206K
Millennium Management — No change 700,000 $147K
Magnetar Financial LLC — No change 600,000 $126K
Meteora Capital, LLC — Reduce -0.0% 559,649 $118K
Toronto Dominion Bank — Reduce -9.7% 542,153 $114K
Shaolin Capital Management LLC — Add +0.9% 504,369 $106K
HBK Investments L P — No change 500,000 $105K
Moore Capital Management, LP — No change 500,000 $105K
Picton Mahoney Asset Management — No change 500,000 $105K
BNP Paribas Financial Markets — No change 462,795 $97K
Commonwealth of Pennsylvania Public School Empls Retrmt SYS — No change 364,209 $76K
Alpine Global Management, LLC — No change 324,602 $68K
Glazer Capital, LLC — No change 275,000 $58K
Radcliffe Capital Management, L.P. — Reduce 0.0% 250,049 $57K
Clear Street Group Inc. — Reduce -0.8% 224,818 $47K
Gritstone Asset Management LLC — No change 197,655 $42K
Susquehanna International Group, LLP — New 187,011 $39K
Periscope Capital Inc. — Add +5.7% 185,000 $39K
Schonfeld Strategic Advisors LLC — No change 163,729 $34K
Context Capital Management, LLC — No change 162,191 $34K
Rivernorth Capital Management, LLC — No change 299,872 $33K
Boothbay Fund Management, LLC — Add +0.0% 125,353 $26K
K2 Principal Fund, L.P. — No change 112,006 $24K
DLD Asset Management, LP — No change 106,713 $22K
Centiva Capital, LP — No change 100,000 $21K
Verition Fund Management LLC — Reduce -3.6% 94,103 $20K

"% of holder's portfolio" is AACBR's weight in each manager's 13F, not the share of Artius II Acquisition Inc. the manager owns.