Best Spac I AcquisitionBSAAU
13F holders, Q1 2026 (March 31)5holders
0new positions
0sold out
1famous investor
$10.40avg. 13F price*
At the end of Q1 2026, 5 institutions reported holding Best Spac I Acquisition Corp. (BSAAU) in their 13F filings, unchanged from Q4 2025. 0 opened new positions and 0 sold out. The largest holders were Clear Street Group Inc. ($1.8M), ADAR1 Capital Management, LLC ($1.0M) and Citadel Advisors ($260K). 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 Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 0 | $0 |
| Exits | 0 | $0 |
All 13F filers, Q4 2025 → Q1 2026: 1,666 shares bought, net +1,666 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 5 holders
| Clear Street Group Inc. | 0.01% | Add +0.7% | 169,212 | $1.8M |
| ADAR1 Capital Management, LLC | 0.06% | No change | 100,000 | $1.0M |
| Citadel Advisors | 0.00% | No change | 25,000 | $260K |
| HRT Financial LP | 0.00% | Add +2.6% | 21,968 | $228K |
| UBS Group AG | 0.00% | No change | 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.