5 institutions reported holding $374,628 of BEST SPAC I ACQUISITION CORP (BSAAU) in SEC 13F filings for 2026-06-30. Largest institutional holders: CITADEL ADVISORS LLC ($347,000), Clear Street Group Inc. ($25,284), UBS Group AG ($2,344), HRT FINANCIAL LP ($0), ADAR1 Capital Management, LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $347,000 | 25,000 | Hold |
| 2 | Clear Street Group Inc. | $25,284 | 2,107 | Trimmed |
| 3 | UBS Group AG | $2,344 | 217 | Hold |
| 4 | HRT FINANCIAL LP | $0 | 0 | Exited |
| 5 | ADAR1 Capital Management, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30