Silverbox Corp. IV-A- 29SBXWFPreferred / convertible
13F holders, Q1 2026 (March 31)28holders −1
0new positions
1sold out
$0.24avg. 13F price*
At the end of Q1 2026, 28 institutions reported holding Silverbox Corp. IV-A- 29 (SBXWF) in their 13F filings, down 1 from Q4 2025. 0 opened new positions and 1 sold out. The largest holders were Linden Advisors LP ($191K), Polar Asset Management Partners Inc. ($148K) and Healthcare of Ontario Pension Plan Trust Fund ($147K).
- Company
- Silverbox Corp. IV-A- 29
- CUSIP
- G81354121
- 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 | 1 | $90K |
All 13F filers, Q4 2025 → Q1 2026: 314,187 shares bought and 372,169 shares sold, net −57,982 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 28 holders
| Linden Advisors LP | — | No change | 666,667 | $191K |
| Polar Asset Management Partners Inc. | — | No change | 660,000 | $148K |
| Healthcare of Ontario Pension Plan Trust Fund | — | No change | 666,666 | $147K |
| Sculptor Capital LP | — | No change | 469,900 | $121K |
| AQR Arbitrage LLC | — | Reduce -0.4% | 527,727 | $118K |
| Aristeia Capital, L.L.C. | — | Add +578.6% | 368,485 | $95K |
| MMCAP International Inc. SPC | — | No change | 326,666 | $73K |
| BNP Paribas Financial Markets | — | No change | 214,539 | $55K |
| Calamos Advisors LLC | — | No change | 166,666 | $48K |
| Picton Mahoney Asset Management | — | No change | 203,326 | $46K |
| Shaolin Capital Management LLC | — | No change | 199,555 | $45K |
| LMR Partners LLP | — | No change | 166,666 | $37K |
| Walleye Capital LLC | — | No change | 164,542 | $37K |
| DLD Asset Management, LP | — | No change | 150,235 | $34K |
| Magnetar Financial LLC | — | Reduce -19.5% | 150,481 | $33K |
| CSS LLC | — | No change | 132,521 | $30K |
| Context Capital Management, LLC | — | No change | 104,317 | $23K |
| Rivernorth Capital Management, LLC | — | No change | 99,999 | $22K |
| Moore Capital Management, LP | — | No change | 83,333 | $19K |
| Periscope Capital Inc. | — | No change | 70,000 | $18K |
| Saba Capital Management, L.P. | — | No change | 67,710 | $17K |
| Wealthspring Capital LLC | — | Reduce -0.6% | 77,152 | $17K |
| Gritstone Asset Management LLC | — | No change | 73,411 | $16K |
| Bulldog Investors, LLP | — | Reduce -1.6% | 58,070 | $13K |
| Parallax Volatility Advisers, L.P. | — | No change | 78,848 | $12K |
| Clear Street Group Inc. | — | No change | 48,400 | $11K |
| Toronto Dominion Bank | — | Reduce -7.6% | 46,180 | $10K |
| StoneX Group Inc. | — | Reduce -28.9% | 15,417 | $3K |
"% 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.