Archimedes Tech SPAC Partners II Co. Ordinary Shares (ATII)
Special purpose acquisition company
Archimedes Tech SPAC Partners II Co. Ordinary Shares (ATII) is listed on Nasdaq, where it has traded since April 3, 2025.
- Type
- Special purpose acquisition company
- Listed On
- Nasdaq
- Listed Since
- April 3, 2025
- Market Cap
- $316M
About Archimedes Tech SPAC Partners II Co. Ordinary Shares
Archimedes Tech SPAC Partners II Co is a blank check company.
Institutional ownership
In 13F filings for the quarter ended June 30, 2026, 49 institutions reported holding ATII, with 17.4 million shares worth $187.6 million in aggregate. The largest reported holder was Tenor Capital Management Co.,, with 1.4 million shares worth $14.7 million. Of the 5 largest holders listed below, 2 opened new positions in ATII, 2 reduced their positions and 1 held its position unchanged during the quarter.
| Institution | Shares | Value | Quarter change |
|---|---|---|---|
| Tenor Capital Management Co., | 1,367,830 | $15M | Reduced 8.81% |
| Fort Baker Capital Management | 1,330,746 | $14M | New position |
| Magnetar Financial | 1,297,302 | $14M | Reduced 0.21% |
| D. E. Shaw | 1,138,500 | $12M | Unchanged |
| Decagon Asset Management | 937,829 | $10M | New position |
Form 13F is a quarterly report that institutional investment managers with at least $100 million in qualifying securities file with the SEC. It lists long positions as of the last day of the quarter and is due within 45 days of quarter end, so these holdings describe that date rather than today.
Frequently asked questions
What is ATII?
Archimedes Tech SPAC Partners II Co. Ordinary Shares (ATII) is listed on Nasdaq, where it has traded since April 3, 2025.
Who are the largest institutional holders of ATII?
In 13F filings for the quarter ended June 30, 2026, the largest reported holders of ATII were Tenor Capital Management Co.,, Fort Baker Capital Management and Magnetar Financial.
How many institutions own ATII?
49 institutions reported a position in ATII for the quarter ended June 30, 2026, worth $187.6 million in total.
Did institutions buy or sell ATII last quarter?
Of the 5 largest reported holders, 2 opened new positions in ATII, 2 reduced their positions and 1 held its position unchanged during the quarter. Every reported holder and its change is on the SentiSense ownership page for ATII.
Every reported institutional holder, plus insider and congressional trades in ATII, on SentiSense.