Silverbox Corp. IVSBXUF
13F holders, Q1 2025 (March 31)5holders −5
1new positions
0sold out
$10.29avg. 13F price*
At the end of Q1 2025, 5 institutions reported holding Silverbox Corp. IV (SBXUF) in their 13F filings, down 5 from Q4 2024. 1 opened new positions and 0 sold out. The largest holders were Magnetar Financial LLC ($6.1M), Schonfeld Strategic Advisors LLC ($618K) and Clear Street LLC ($189K).
- Company
- Silverbox Corp. IV
- CUSIP
- G81354113
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 1 | $17K |
| Exits | 0 | $0 |
All 13F filers, Q4 2024 → Q1 2025: 8,658 shares bought and 2,009,914 shares sold, net −2,001,256 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 5 holders
| Magnetar Financial LLC | 0.09% | No change | 594,000 | $6.1M |
| Schonfeld Strategic Advisors LLC | 0.00% | Reduce -14.4% | 58,809 | $618K |
| Clear Street LLC | 0.00% | Add +62.4% | 18,236 | $189K |
| UBS Group AG | 0.00% | New | 1,650 | $17K |
| Healthcare of Ontario Pension Plan Trust Fund | 0.00% | Reduce -100.0% | 2 | $21 |
"% of holder's portfolio" is SBXUF's weight in each manager's 13F, not the share of Silverbox Corp. IV the manager owns.