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SBXD · SilverBox Corp IV

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$10.82 +0.00 (+0.00%) At close · Aug 17
Going-concern doubt — flagged Aug 12, 2026

Substantial doubt about the company's ability to continue as a going concern.

“Our liquidity condition and mandatory liquidation within one year of the issuance of these unaudited condensed financial statements raise substantial doubt about our ability to continue as a going concern. Management plans to address this uncertainty through a Business Combination. However, there can be no assurance that we will be able to consummate any Business Combination by the end of the Combination Period.”
View the 10-Q filed Aug 12, 2026
Market Cap
$69.49M
Shares
6.42M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 46
Total Value: $219,546,984
Total Shares: 20,309,621

Institutional Ownership Trend

7 quarters

Holder Concentration

Across 46 13F filers · Δ vs Mar 31, 2026
Top Holder
9.8%
Dec 2024 → Jun 2026 · range 9.8% – 13.6%
−0.0 pts
Top 5
40.8%
Dec 2024 → Jun 2026 · range 36.1% – 59.2%
+0.5 pts
Top 10
64.0%
Dec 2024 → Jun 2026 · range 57.9% – 83.0%
+0.2 pts
HHI
523
Dec 2024 → Jun 2026 · range 451 – 873
Broadly held+14

Quarterly Activity

vs Mar 31, 2026
New
4
Increased
8
Decreased
11
Sold Out
4
Unchanged
23
Holder count: 0
Institutional value: +1.4%
Shares held: +0.4%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open
BERKLEY W R CORP +415,554 1,930,127
HIGHBRIDGE CAPITAL MANAGEMENT LLC +102,623 154,587
METEORA CAPITAL, LLC +86,092 139,311
TORONTO DOMINION BANK +71,274 246,374
Quarry LP +58,403 200,000

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open
AQR Arbitrage LLC −322,975 1,012,401
RLH Capital LLC −94,227 210,093
DLD Asset Management, LP −71,073 50,000
Periscope Capital Inc. −50,000 75,000
Crossingbridge Advisors, LLC −48,400 928,613

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open
StoneX Group Inc. 48,554 $524,868
Alyeska Investment Group, L.P. 24,500 $264,845
BOOTHBAY FUND MANAGEMENT, LLC 11,719 $126,682
Arax Advisory Partners 4,221 $45,629

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Verition Fund Management LLC 145,142 $1,553,019
GLAZER CAPITAL, LLC 21,369 $228,648
NATIONAL BANK OF CANADA /FI/ 64 $684
FNY Investment Advisers, LLC 37 $395
Filter: New 4 Increased 8 Reduced 11 Sold out 4 Unchanged 23
Showing 46 of 46
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Linden Advisors LP $21,620,000 9.85% 2,000,000
BERKLEY W R CORP $20,864,672 9.50% 1,930,127
MIZUHO SECURITIES USA LLC $19,895,178 9.06% 1,840,442
Polar Asset Management Partners Inc. $16,301,534 7.43% 1,508,005
AQR Arbitrage LLC $10,944,054 4.98% 1,012,401
WOLVERINE ASSET MANAGEMENT LLC $10,743,150 4.89% 993,816
D. E. Shaw & Co., Inc. $10,695,381 4.87% 989,397
MMCAP International Inc. SPC $10,593,800 4.83% 980,000
Crossingbridge Advisors, LLC $10,038,306 4.57% 928,613
PICTON MAHONEY ASSET MANAGEMENT $8,917,158 4.06% 824,899
RiverPark Advisors, LLC $7,335,806 3.34% 678,613
GOLDMAN SACHS GROUP INC $6,551,659 2.98% 606,074
Magnetar Financial LLC $5,630,096 2.56% 520,823
LMR Partners LLP $5,405,000 2.46% 500,000
Calamos Advisors LLC $5,405,000 2.46% 500,000
First Trust Capital Management L.P. $4,812,266 2.19% 445,168
ARISTEIA CAPITAL, L.L.C. $3,633,489 1.65% 336,123
Westchester Capital Management, LLC $3,518,492 1.60% 325,485
RIVERNORTH CAPITAL MANAGEMENT, LLC $3,242,967 1.48% 299,997
Context Capital Management, LLC $2,842,500 1.29% 262,951
MOORE CAPITAL MANAGEMENT, LP $2,702,500 1.23% 250,000
TORONTO DOMINION BANK $2,663,302 1.21% 246,374
Shaolin Capital Management LLC $2,606,701 1.19% 241,138
Radcliffe Capital Management, L.P. $2,458,777 1.12% 227,454
RLH Capital LLC $2,271,105 1.03% 210,093
Wealthspring Capital LLC $2,243,777 1.02% 207,565
Quarry LP $2,162,000 0.98% 200,000
MILLENNIUM MANAGEMENT LLC $2,162,000 0.98% 200,000
MANGROVE PARTNERS IM, LLC $1,693,083 0.77% 156,622
HIGHBRIDGE CAPITAL MANAGEMENT LLC $1,671,085 0.76% 154,587
METEORA CAPITAL, LLC $1,505,951 0.69% 139,311
HRT FINANCIAL LP $1,259,916 0.57% 116,551
Massar Capital Management, LP $1,022,626 0.47% 94,600
Periscope Capital Inc. $810,750 0.37% 75,000
Lineage Point Capital LP $540,954 0.25% 50,042
DLD Asset Management, LP $540,500 0.25% 50,000
JPMORGAN CHASE & CO $540,500 0.25% 50,000
StoneX Group Inc. $524,868 0.24% 48,554
Clear Street Group Inc. $322,300 0.15% 29,815
Alyeska Investment Group, L.P. $264,845 0.12% 24,500
JANE STREET GROUP, LLC $179,661 0.08% 16,620
BOOTHBAY FUND MANAGEMENT, LLC $126,682 0.06% 11,719
CITADEL ADVISORS LLC $109,937 0.05% 10,170
BNP PARIBAS ARBITRAGE, SA $100,684 0.05% 9,314
Arax Advisory Partners $45,629 0.02% 4,221
UBS Group AG $26,343 0.01% 2,437
Key facts CIK 2015947 CUSIP G81354105 13F (30d) 47 filings 46 filers Visit website Investor relations

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