Silverbox Corp. IV-A- 29SBXWFPreferred / convertible
13F holders, Q4 2025 (December 31)29holders +2
2new positions
0sold out
$0.29avg. 13F price*
At the end of Q4 2025, 29 institutions reported holding Silverbox Corp. IV-A- 29 (SBXWF) in their 13F filings, up 2 from Q3 2025. 2 opened new positions and 0 sold out. The largest holders were Linden Advisors LP ($210K), Healthcare of Ontario Pension Plan Trust Fund ($187K) and Polar Asset Management Partners Inc. ($185K).
- Company
- Silverbox Corp. IV-A- 29
- CUSIP
- G81354121
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $59K |
| Exits | 0 | $0 |
All 13F filers, Q3 2025 → Q4 2025: 225,760 shares bought and 2,907 shares sold, net +222,853 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 29 holders
| Linden Advisors LP | — | No change | 666,667 | $210K |
| Healthcare of Ontario Pension Plan Trust Fund | — | No change | 666,666 | $187K |
| Polar Asset Management Partners Inc. | — | No change | 660,000 | $185K |
| AQR Arbitrage LLC | — | No change | 529,987 | $148K |
| Sculptor Capital LP | — | No change | 469,900 | $148K |
| MMCAP International Inc. SPC | — | No change | 326,666 | $91K |
| Governors Lane LP | — | No change | 321,912 | $90K |
| BNP Paribas Financial Markets | — | No change | 214,539 | $60K |
| Picton Mahoney Asset Management | — | No change | 203,326 | $57K |
| Shaolin Capital Management LLC | — | No change | 199,555 | $56K |
| Magnetar Financial LLC | — | Reduce -0.0% | 187,027 | $52K |
| Calamos Advisors LLC | — | No change | 166,666 | $47K |
| LMR Partners LLP | — | No change | 166,666 | $47K |
| Walleye Capital LLC | — | No change | 164,542 | $46K |
| DLD Asset Management, LP | — | New | 150,235 | $42K |
| CSS LLC | — | No change | 132,521 | $37K |
| Context Capital Management, LLC | — | No change | 104,317 | $29K |
| Rivernorth Capital Management, LLC | — | No change | 99,999 | $28K |
| Moore Capital Management, LP | — | No change | 83,333 | $23K |
| Parallax Volatility Advisers, L.P. | — | Add +36.8% | 78,848 | $22K |
| Wealthspring Capital LLC | — | Reduce -1.0% | 77,580 | $22K |
| Gritstone Asset Management LLC | — | No change | 73,411 | $21K |
| Periscope Capital Inc. | — | No change | 70,000 | $20K |
| Saba Capital Management, L.P. | — | No change | 67,710 | $19K |
| Aristeia Capital, L.L.C. | — | New | 54,298 | $17K |
| Bulldog Investors, LLP | — | Reduce -1.2% | 58,997 | $17K |
| Toronto Dominion Bank | — | No change | 50,000 | $14K |
| Clear Street Group Inc. | — | No change | 48,400 | $14K |
| StoneX Group Inc. | — | Reduce -6.0% | 21,693 | $6K |
"% of holder's portfolio" is SBXWF's weight in each manager's 13F, not the share of Silverbox Corp. IV-A- 29 the manager owns.