Archimedes Tech SPAC Partners II Co. - Ordinary shares, $0.0001 Par Value (ATIIU) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2025 to Q4 2025

Type / Class
Equity / Ordinary shares, $0.0001 Par Value
Symbol
ATIIU on Nasdaq
Shares outstanding
29,411,765
Price per share
$10.54
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
224,854
Total reported value
$2,373,823
% of total 13F portfolios
0%
Share change
-93,629
Value change
-$958,921
Number of holders
4
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Archimedes Tech SPAC Partners II Co. - Ordinary shares, $0.0001 Par Value (ATIIU) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
TENOR CAPITAL MANAGEMENT Co., L.P. 5.1% -12% $15,645,000 1,500,000 0% Tenor Capital Management Company, L.P. 30 Sep 2025
Sculptor Capital LP 4.4% -13% $13,585,000 1,300,000 0% Sculptor Capital LP 30 Jun 2025

As of 31 Dec 2025, 4 institutional investors reported holding 224,854 shares of Archimedes Tech SPAC Partners II Co. - Ordinary shares, $0.0001 Par Value (ATIIU). This represents 0.76% of the company’s total 29,411,765 outstanding shares.

Institutional Holders of Archimedes Tech SPAC Partners II Co. - Ordinary shares, $0.0001 Par Value (ATIIU) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 224,854 $2,373,823 -$958,921 $10.54 4
2025 Q3 318,483 $3,463,829 -$10,304,352 $11.44 6
2025 Q2 1,303,365 $13,390,167 -$175,139,846 $10.30 9
2025 Q1 19,250,140 $194,106,135 +$194,106,135 $10.08 44