5 institutions reported holding $1.2M of ARCHIMEDES TECH SPAC PARTNER (ATIIU) in SEC 13F filings for 2026-03-31. Largest institutional holders: JPMORGAN CHASE & CO ($545,000), JANE STREET GROUP, LLC ($502,054), Clear Street Group Inc. ($109,000), UBS Group AG ($24,480), GLAZER CAPITAL, LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | JPMORGAN CHASE & CO | $545,000 | 50,000 | Trimmed |
| 2 | JANE STREET GROUP, LLC | $502,054 | 46,060 | Hold |
| 3 | Clear Street Group Inc. | $109,000 | 10,000 | Trimmed |
| 4 | UBS Group AG | $24,480 | 2,327 | Trimmed |
| 5 | GLAZER CAPITAL, LLC | $0 | 1 | New |
Source: SEC Form 13F filings · as of 2026-03-31