Best Spac I AcquisitionBSAAU
13F holders, Q4 2025 (December 31)5holders −8
0new positions
1sold out
1famous investor
$10.28avg. 13F price*
At the end of Q4 2025, 5 institutions reported holding Best Spac I Acquisition Corp. (BSAAU) in their 13F filings, down 8 from Q3 2025. 0 opened new positions and 1 sold out. The largest holders were Clear Street Group Inc. ($1.7M), ADAR1 Capital Management, LLC ($1.0M) and Citadel Advisors ($258K). One famous investor held it Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Best Spac I Acquisition Corp.
- CUSIP
- G1069P137
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 0 | $0 |
| Exits | 1 | $794K |
All 13F filers, Q3 2025 → Q4 2025: 49,506 shares bought and 116,766 shares sold, net −67,260 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 5 holders
| Clear Street Group Inc. | 0.01% | Add +41.7% | 168,112 | $1.7M |
| ADAR1 Capital Management, LLC | 0.08% | No change | 100,000 | $1.0M |
| Citadel Advisors | 0.00% | Reduce -55.1% | 25,000 | $258K |
| HRT Financial LP | 0.00% | Reduce -26.3% | 21,402 | $220K |
| UBS Group AG | 0.00% | Reduce -54.4% | 217 | $2K |
"% of holder's portfolio" is BSAAU's weight in each manager's 13F, not the share of Best Spac I Acquisition Corp. the manager owns.