Archimedes Tech SPAC Partners II Co.
ATII- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002028516
Insider trades, last 90 days
None
- No open-market purchases or sales were filed in the last 90 days.
13F holders, Q2 2026
51
- −3 vs. Q1 2026
- Total value $190.75M
Superinvestors holding ATII
0
- None of the superinvestors held ATII at the end of Q2 2026.
Price chart
Latest insider trades
View all: Latest insider tradesOpen-market purchases and sales by ATII insiders, newest first.
| Filed (ET) | Trade date | Insider | Transaction | Shares | Avg price | Value | Shares after | Holding change | Filing |
|---|---|---|---|---|---|---|---|---|---|
| Feb 12, 2025 | Feb 12, 2025 | Archimedes Tech SPAC Sponsors II LLC10% Owner | PPurchaseOrdinary shares | +530K | – | – | 6.28M | +9.2% | SEC |
| Feb 12, 2025 | Feb 12, 2025 | Archimedes Tech SPAC Sponsors II LLC10% Owner | PPurchaseOrdinary shares · Derivative | +265K | – | – | 265K | – | SEC |
| Feb 12, 2025 | Feb 12, 2025 | Long LongChief Executive Officer | PPurchaseOrdinary shares | +530K | – | – | 6.28M | +9.2% | SEC |
| Feb 12, 2025 | Feb 12, 2025 | Long LongChief Executive Officer | PPurchaseOrdinary shares · Derivative | +265K | – | – | 265K | – | SEC |
Top 5 13F holders, Q2 2026
View all: Top 5 13F holders, Q2 2026The largest institutional positions in ATII at the end of Q2 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| TENOR CAPITAL MANAGEMENT Co., L.P. | 1,367,830 | $14.75M | 0.21% | −132,170−8.8% | Reduced |
| Fort Baker Capital Management LP | 1,330,746 | $14.35M | 1.14% | +1,330,746 | New |
| Magnetar Financial LLC | 1,297,302 | $13.98M | 0.13% | −2,698−0.2% | Reduced |
| D. E. Shaw & Co., Inc. | 1,138,500 | $12.27M | 0.01% | 00.0% | Unchanged |
| Decagon Asset Management LLP | 937,829 | $10.11M | 2.02% | +937,829 | New |