Silverbox Corp. IV-A- 29SBXWFPreferred / convertible
13F holders, Q2 2025 (June 30)28holders +4
6new positions
1sold out
$1.17avg. 13F price*
At the end of Q2 2025, 28 institutions reported holding Silverbox Corp. IV-A- 29 (SBXWF) in their 13F filings, up 4 from Q1 2025. 6 opened new positions and 1 sold out. The largest holders were AQR Arbitrage LLC ($893K), Healthcare of Ontario Pension Plan Trust Fund ($800K) and Polar Asset Management Partners Inc. ($792K).
- Company
- Silverbox Corp. IV-A- 29
- CUSIP
- G81354121
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 6 | $1.0M |
| Exits | 1 | $49K |
All 13F filers, Q1 2025 → Q2 2025: 1,011,159 shares bought and 519,848 shares sold, net +491,311 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 28 holders
| AQR Arbitrage LLC | — | No change | 744,526 | $893K |
| Healthcare of Ontario Pension Plan Trust Fund | — | No change | 666,666 | $800K |
| Polar Asset Management Partners Inc. | — | No change | 660,000 | $792K |
| Linden Advisors LP | — | No change | 666,667 | $767K |
| Sculptor Capital LP | — | Reduce -28.0% | 475,000 | $546K |
| MMCAP International Inc. SPC | — | No change | 326,666 | $392K |
| Governors Lane LP | — | New | 321,912 | $370K |
| Picton Mahoney Asset Management | — | Reduce -12.6% | 291,226 | $335K |
| Harraden Circle Investments, LLC | — | New | 240,153 | $276K |
| Shaolin Capital Management LLC | — | Add +33.7% | 199,271 | $239K |
| Magnetar Financial LLC | — | New | 193,330 | $222K |
| LMR Partners LLP | — | No change | 166,666 | $200K |
| Calamos Advisors LLC | — | No change | 166,666 | $192K |
| Walleye Capital LLC | — | Add +123.7% | 104,542 | $125K |
| Context Capital Management, LLC | — | Reduce -32.4% | 104,317 | $125K |
| CSS LLC | — | Reduce -21.6% | 90,471 | $109K |
| Rivernorth Capital Management, LLC | — | No change | 99,999 | $100K |
| Moore Capital Management, LP | — | No change | 83,333 | $100K |
| Gritstone Asset Management LLC | — | No change | 74,051 | $89K |
| Periscope Capital Inc. | — | Reduce -44.0% | 70,000 | $81K |
| Wealthspring Capital LLC | — | New | 78,961 | $79K |
| Saba Capital Management, L.P. | — | No change | 67,710 | $78K |
| Bulldog Investors, LLP | — | Reduce -13.3% | 61,822 | $62K |
| Toronto Dominion Bank | — | New | 50,000 | $60K |
| Clear Street LLC | — | Add +6.8% | 48,400 | $58K |
| Parallax Volatility Advisers, L.P. | — | No change | 27,921 | $28K |
| StoneX Group Inc. | — | New | 15,695 | $16K |
| Schonfeld Strategic Advisors LLC | — | Reduce -58.5% | 10,000 | $12K |
"% 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.