# ARCHIMEDES TECH SPAC PARTNER (ATIIU)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/ATIIU/

- Reporting holders: 4
- Reported value: $1.3M
- Shares held by institutions: 110,365 of 29,590,000 outstanding
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [JPMORGAN CHASE & CO](https://holderbook.com/funds/19617-jpmorgan-chase-co/) | $587.5K | 49,000 | 0.0% | 6 |
| [JANE STREET GROUP, LLC](https://holderbook.com/funds/1595888-jane-street-group-llc/) | $533.4K | 45,049 | 0.0% | 6 |
| [Clear Street Group Inc.](https://holderbook.com/funds/1881567-clear-street-group-inc/) | $169.8K | 14,164 | 0.0% | 4 |
| [UBS Group AG](https://holderbook.com/funds/1610520-ubs-group-ag/) | $25.2K | 2,152 | 0.0% | 6 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 4 | $1.3M |
| Q1 2026 | 4 | $1.2M |
| Q4 2025 | 4 | $2.4M |
| Q3 2025 | 6 | $4.9M |
| Q2 2025 | 9 | $13.4M |
| Q1 2025 | 44 | $194.1M |