Artius II Acquisition Inc. - Class A ordinary shares, par value $0.0001 per share (AACB)

Historical Holders from Q2 2025 to Q3 2025

Symbol
AACB on Nasdaq
Type / Class
Equity / Class A ordinary shares, par value $0.0001 per share
Shares outstanding
23,656,772
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares, excl. options
20,942,318
Holdings value
$212,470,651
% of all portfolios
0%
Number of holders
42
Number of buys
11
Number of sells
15
Average buys %
+0%
Average sells %
-0%
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Artius II Acquisition Inc. - Class A ordinary shares, par value $0.0001 per share (AACB) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Artius II Acquisition Partners LLC 20% $56,069,000 5,675,000 Artius II Acquisition Partners LLC 14 Feb 2025
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 8.5% $19,760,000 2,000,000 Healthcare of Ontario Pension Plan Trust Fund 31 Mar 2025
AQR CAPITAL MANAGEMENT LLC 6.4% -29% $15,247,381 -$4,849,619 1,502,205 -24% AQR Capital Management, LLC 30 Jun 2025
As of 30 Sep 2025 Artius II Acquisition Inc. - Class A ordinary shares, par value $0.0001 per share (AACB) has 42 institutional shareholders that have filed 13F forms with the Securities Exchange Commission (SEC). These institutions hold a total of 20,942,318 shares of 23,656,772 outstanding shares and own 89% of the company stock as of 30 Sep 2025.

Top 25 institutional shareholders of Artius II Acquisition Inc. - Class A ordinary shares, par value $0.0001 per share (AACB) own 81% of the company based on 13F filings as of 30 Sep 2025

Filer Ownership Nb Shares Share Change % Portfolio % Holdings Value
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 8.5% 2,000,000 0% 0.04% $20,260,000
HGC Investment Management Inc. 6.3% 1,500,000 3.7% $15,255,000
AQR Arbitrage LLC 6.3% 1,490,205 -0.8% 0.38% $15,095,777
GLAZER CAPITAL, LLC 5.1% 1,194,892 -0% 0.41% $12,104,000
Sculptor Capital LP 4.2% 1,000,000 -29% 0.14% $10,180,000
Polar Asset Management Partners Inc. 4.2% 1,000,000 0% 0.21% $10,170,000
Linden Advisors LP 4.2% 1,000,000 0% 0.07% $10,130,000
Westchester Capital Management, LLC 4.2% 995,939 0% 0.52% $10,088,862
Alberta Investment Management Corp 4.1% 980,000 0% 0.1% $9,927,400
PICTON MAHONEY ASSET MANAGEMENT 3.2% 750,000 0% 0.1% $7,612,000
TWO SIGMA INVESTMENTS, LP 3.1% 725,000 0% 0.01% $7,344,250
Radcliffe Capital Management, L.P. 2.7% 650,000 +143% 0.41% $6,597,500
Magnetar Financial LLC 2.5% 600,000 0% 0.04% $6,078,000
D. E. Shaw & Co., Inc. 2.5% 600,000 0% 0% $6,078,000
Jain Global LLC 2.1% 500,000 0% 0.07% $5,065,000
MOORE CAPITAL MANAGEMENT, LP 2.1% 500,000 0% 0.1% $5,090,000
HBK INVESTMENTS L P 2.1% 499,998 -0% 0.08% $5,089,980
GOLDMAN SACHS GROUP INC 2% 462,795 0% 0% $4,688,113
MANGROVE PARTNERS IM, LLC 1.9% 450,000 0.34% $4,581,000
Periscope Capital Inc. 1.8% 432,800 +89% 1.1% $4,392,920
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 1.7% 400,000 0% 0.02% $4,052,000
BERKLEY W R CORP 1.7% 396,960 0% 0.26% $4,021,205
First Trust Capital Management L.P. 1.6% 380,000 0% 0.25% $3,868,400
Shaolin Capital Management LLC 1.6% 371,756 +148% 0.18% $3,784,476
RIVERNORTH CAPITAL MANAGEMENT, LLC 1.3% 299,872 0.17% $3,037,703

Institutional Holders of Artius II Acquisition Inc. - Class A ordinary shares, par value $0.0001 per share (AACB) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price Investors
2025 Q3 20,942,318 $212,470,651 +$19,791,223 $10.15 42
2025 Q2 18,992,045 $192,176,114 +$190,675,953 $10.12 41