Archimedes Tech SPAC Partners II Co.
ATIIU- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002028516
No open-market purchases or sales by Archimedes Tech SPAC Partners II Co. insiders were filed in the last 90 days; 4 institutions reported holding it in 13F filings for Q2 2026, worth $1.32M in total; no superinvestor holds it.
Q4 2025 vs. Q3 2025
How the institutions holding Archimedes Tech SPAC Partners II Co. changed between Q3 2025 and Q4 2025.
All holders in Q4 2025All holders in Q3 2025
| Measure | Q3 2025 | Q4 2025 | Change |
|---|---|---|---|
| Holders | 6 | 4 | −2 |
| Shares | 318.5K | 224.9K | −93.6K (−29.4%) |
| Value | $3.46M | $2.37M | −$1.09M (−31.5%) |
New holders (0)
Institutions that held Archimedes Tech SPAC Partners II Co. at the end of Q4 2025 but not at the end of Q3 2025.
None.
Sold out (2)
Institutions that held Archimedes Tech SPAC Partners II Co. at the end of Q3 2025 and filed for Q4 2025 without it.
| Institution | Shares, Q3 2025 | Value, Q3 2025 |
|---|---|---|
| Rivernorth Capital Management, LLC | 92,135 | $939.8K |
| Toronto Dominion Bank | 1 | $13 |