SilverBox Corp IV (SBXD) — Institutional Holders, Q2 2026
57 institutional investment managers reported a SBXD position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $239.0M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
SBXD in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- MIZUHO SECURITIES USAAdded · +1,840,442 sh+$17.1M
- BERKLEY W RAdded · +415,554 sh+$3.9M
- SkyView Investment AdvisorsNew · +179,449 sh+$1.7M
- HIGHBRIDGE CAPITAL MANAGEMENTAdded · +102,623 sh+$953.2K
- METEORA CAPITALAdded · +86,092 sh+$799.6K
Biggest sellers
- AQR ArbitrageTrimmed · -319,591 sh-$3.0M
- Verition Fund ManagementSold out · -145,142 sh-$1.3M
- RLH CapitalTrimmed · -94,227 sh-$875.2K
- PERISCOPE CAPITALTrimmed · -50,000 sh-$464.4K
- Crossingbridge AdvisorsTrimmed · -48,400 sh-$449.5K
SBXD 13F holders ranked 1–57 of 57
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | MIZUHO SECURITIES USA#1 · 3,637,389 sh | 3,637,389 | $39.0M | 0.38% | +102.4% |
| 2 | LINDEN ADVISORS#2 · 2,666,667 sh | 2,666,667 | $21.7M | 0.11% | 0.0% |
| 3 | BERKLEY W R#3 · 1,930,127 sh | 1,930,127 | $20.9M | 0.99% | +27.4% |
| 4 | Polar Asset Management Partners#4 · 2,168,005 sh | 2,168,005 | $16.4M | 0.27% | 0.0% |
| 5 | AQR Arbitrage#5 · 1,543,512 sh | 1,543,512 | $11.0M | 0.16% | -17.2% |
| 6 | WOLVERINE ASSET MANAGEMENT#6 · 993,816 sh | 993,816 | $10.7M | 0.09% | 0.0% |
| 7 | D. E. Shaw#7 · 989,397 sh | 989,397 | $10.7M | <0.01% | 0.0% |
| 8 | MMCAP International SPC#8 · 1,306,666 sh | 1,306,666 | $10.6M | 0.90% | 0.0% |
| 9 | Crossingbridge Advisors#9 · 928,613 sh | 928,613 | $10.0M | 1.77% | -5.0% |
| 10 | PICTON MAHONEY ASSET MANAGEMENT#10 · 1,028,225 sh | 1,028,225 | $8.9M | 0.07% | 0.0% |
| 11 | RiverPark Advisors#11 · 678,613 sh | 678,613 | $7.3M | 3.35% | 0.0% |
| 12 | GOLDMAN SACHS GROUP#12 · 606,074 sh | 606,074 | $6.6M | <0.01% | 0.0% |
| 13 | Magnetar Financial#13 · 667,507 sh | 667,507 | $5.7M | 0.05% | -0.6% |
| 14 | Calamos Advisors#14 · 666,666 sh | 666,666 | $5.4M | 0.02% | 0.0% |
| 15 | LMR Partners LLP#15 · 666,666 sh | 666,666 | $5.4M | 0.02% | 0.0% |
| 16 | First Capital Management L.P.#16 · 445,168 sh | 445,168 | $4.8M | 0.28% | 0.0% |
| 17 | ARISTEIA CAPITAL, L.L.C.#17 · 704,608 sh | 704,608 | $3.7M | 0.05% | 0.0% |
| 18 | Westchester Capital Management#18 · 325,485 sh | 325,485 | $3.5M | 0.17% | 0.0% |
| 19 | RIVERNORTH CAPITAL MANAGEMENT#19 · 399,996 sh | 399,996 | $3.3M | 0.15% | 0.0% |
| 20 | MOORE CAPITAL MANAGEMENT#20 · 333,333 sh | 333,333 | $2.7M | 0.04% | 0.0% |
| 21 | TORONTO DOMINION BANK#21 · 287,454 sh | 287,454 | $2.7M | <0.01% | +29.9% |
| 22 | Shaolin Capital Management#22 · 442,771 sh | 442,771 | $2.6M | 0.13% | -7.6% |
| 23 | Radcliffe Capital Management, L.P.#23 · 227,454 sh | 227,454 | $2.5M | 0.19% | 0.0% |
| 24 | RLH Capital#24 · 210,093 sh | 210,093 | $2.3M | 1.09% | -31.0% |
| 25 | Wealthspring Capital#25 · 284,717 sh | 284,717 | $2.3M | 0.50% | 0.0% |
| 26 | MILLENNIUM MANAGEMENT#26 · 200,000 sh | 200,000 | $2.2M | <0.01% | 0.0% |
| 27 | Quarry#27 · 200,000 sh | 200,000 | $2.2M | 0.18% | +41.2% |
| 28 | SkyView Investment Advisors#28 · 179,449 sh | 179,449 | $1.9M | 1.52% | New |
| 29 | MANGROVE PARTNERS IM#29 · 156,622 sh | 156,622 | $1.7M | 0.11% | 0.0% |
| 30 | HIGHBRIDGE CAPITAL MANAGEMENT#30 · 154,587 sh | 154,587 | $1.7M | 0.04% | +77.8% |
| 31 | METEORA CAPITAL#31 · 139,311 sh | 139,311 | $1.5M | 0.12% | +161.8% |
| 32 | HRT FINANCIAL#32 · 116,551 sh | 116,551 | $1.3M | <0.01% | 0.0% |
| 33 | Massar Capital Management#33 · 94,600 sh | 94,600 | $1.0M | 0.10% | 0.0% |
| 34 | PERISCOPE CAPITAL#34 · 145,000 sh | 145,000 | $822.0K | 0.07% | -25.6% |
| 35 | DLD Asset Management#35 · 200,235 sh | 200,235 | $564.5K | 0.04% | -26.2% |
| 36 | JPMORGAN CHASE#36 · 50,000 sh | 50,000 | $541.0K | 0.00% | 0.0% |
| 37 | Lineage Point Capital#37 · 50,042 sh | 50,042 | $541.0K | 0.11% | 0.0% |
| 38 | StoneX Group#38 · 94,705 sh | 94,705 | $531.7K | 0.02% | +514.3% |
| 39 | Clear Street Group#39 · 86,221 sh | 86,221 | $418.2K | <0.01% | +0.4% |
| 40 | Alyeska Investment Group, L.P.#40 · 24,500 sh | 24,500 | $266.6K | <0.01% | New |
| 41 | GLAZER CAPITAL#41 · 21,369 sh | 21,369 | $231.0K | <0.01% | 0.0% |
| 42 | JANE STREET GROUP#42 · 16,620 sh | 16,620 | $179.7K | 0.00% | +13.0% |
| 43 | BNP PARIBAS FINANCIAL MARKETS#43 · 223,853 sh | 223,853 | $135.0K | 0.00% | 0.0% |
| 44 | BOOTHBAY FUND MANAGEMENT#44 · 11,719 sh | 11,719 | $126.7K | <0.01% | New |
| 45 | CITADEL ADVISORS#45 · 10,170 sh | 10,170 | $109.9K | 0.00% | -7.2% |
| 46 | HEALTHCARE OF ONTARIO PENSION PLAN FUND#46 · 666,666 sh | 666,666 | $106.7K | <0.01% | 0.0% |
| 47 | Sculptor Capital#47 · 469,900 sh | 469,900 | $75.2K | <0.01% | 0.0% |
| 48 | SRS Capital Advisors#48 · 5,628 sh | 5,628 | $45.9K | <0.01% | New |
| 49 | UBS Group AG#49 · 4,041 sh | 4,041 | $43.8K | 0.00% | +30.9% |
| 50 | Walleye Capital#50 · 164,542 sh | 164,542 | $26.3K | <0.01% | 0.0% |
| 51 | CSS#51 · 132,521 sh | 132,521 | $21.2K | <0.01% | 0.0% |
| 52 | Parallax Volatility Advisers, L.P.#52 · 78,848 sh | 78,848 | $12.6K | 0.00% | 0.0% |
| 53 | GRITSTONE ASSET MANAGEMENT#53 · 73,411 sh | 73,411 | $11.7K | — | 0.0% |
| 54 | Saba Capital Management, L.P.#54 · 67,710 sh | 67,710 | $9.2K | <0.01% | 0.0% |
| 55 | Bulldog Investors, LLP#55 · 57,285 sh | 57,285 | $9.0K | <0.01% | -1.4% |
| 56 | FNY Investment Advisers#56 · 37 sh | 37 | $0.00 | — | 0.0% |
| 57 | Context Capital Management#57 · 367,268 sh | 367,268 | — | — | 0.0% |
Funds that sold out of SBXD in Q2 2026 (2)
Held SBXD at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| Verition Fund Management145,142 sh | 145,142 | $1.6M |
| NATIONAL BANK OF CANADA64 sh | 64 | $672.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.