ATII: Archimedes Tech SPAC Partners II Co. insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 0 sales totaling - in the last 180 days.
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-08-14 | Fell below 5% | Tenor Capital Management Company, L.P. | 4.60% | SEC |
Institutional ownership (Q2 2026)
4 institutions reported holding $1.32M of Archimedes Tech SPAC Partners II Co. on Form 13F (5 the quarter before). 0 opened a new position and 1 sold out. Shares held by institutions: +2%.
| Largest holders | Shares | Value |
|---|---|---|
| JPMORGAN CHASE & CO | 49,000 | $588K |
| JANE STREET GROUP, LLC | 45,049 | $533K |
| Clear Street Group Inc. | 14,164 | $170K |
| UBS Group AG | 2,152 | $25K |
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