Security Snapshot

SilverBox Corp IV - Common Shares (SBXD) Institutional Ownership

CUSIP: G81354105

13F Institutional Holders and Ownership History from Q4 2024 to Q4 2025

Latest Period

Q4 2025

Institutions Reporting

45

Shares (Excl. Options)

19,793,495

Price

$10.58

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Type / Class
Equity / Common Shares
Symbol
SBXD on NYSE
Shares outstanding
20,570,913
Price per share
$10.62
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
19,793,495
Total reported value
$209,293,850
% of total 13F portfolios
0%
Share change
+335,531
Value change
+$3,800,741
Number of holders
45
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Quick Takeaways

  • SBXD - SilverBox Corp IV - Common Shares is tracked under CUSIP G81354105.
  • 45 institutions reported positions in Q4 2025.
  • 8 significant owners is listed from Schedule 13D/13G reporting.

What Changed

  • Holder count moved from 50 to 45 between Q3 2025 and Q4 2025.
  • Reported value moved from $201,730,829 to $209,293,850.

Why This Matters

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Source Evidence

Source: SEC Form 13F

Latest holder context comes from 45 institutions filings for Q4 2025.

Open SEC Evidence

Investment Quick Answers

What is CUSIP G81354105?
CUSIP G81354105 identifies SBXD - SilverBox Corp IV - Common Shares in SEC 13F datasets.

Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.

Significant Owners of SilverBox Corp IV - Common Shares (SBXD) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
SilverBox Sponsor IV LLC 21% $56,131,950 5,455,000 SilverBox Sponsor IV LLC 31 Dec 2024
MIZUHO FINANCIAL GROUP INC 8% $17,411,220 1,645,673 Mizuho Financial Group, Inc. 31 Dec 2025
AQR CAPITAL MANAGEMENT LLC 6.6% -13% $14,547,622 -$2,299,946 1,347,002 -14% AQR Capital Management, LLC 30 Jun 2025
BERKLEY W R CORP 5.9% $12,819,511 1,211,674 W. R. Berkley Corporation 31 Dec 2025
BARCLAYS PLC 4.7% -27% $10,486,012 -$3,578,429 970,927 -25% Barclays PLC 30 Jun 2025
GOLDMAN SACHS GROUP INC 3.2% -59% $6,847,610 -$9,976,936 654,022 -59% THE GOLDMAN SACHS GROUP, INC. 30 Sep 2025
HIGHBRIDGE CAPITAL MANAGEMENT LLC 1.4% -75% $2,931,600 -$9,933,936 280,000 -77% HIGHBRIDGE CAPITAL MANAGEMENT LLC 30 Sep 2025
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.5% -92% $1,080,000 -$18,360,000 100,000 -94% Healthcare of Ontario Pension Plan Trust Fund 30 Jun 2025

As of 31 Dec 2025, 45 institutional investors reported holding 19,793,495 shares of SilverBox Corp IV - Common Shares (SBXD). This represents 96% of the company’s total 20,570,913 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of SilverBox Corp IV - Common Shares (SBXD) together control 88% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
Linden Advisors LP 9.7% 2,000,000 0% 0.13% $21,160,000
MIZUHO SECURITIES USA LLC 8% 1,645,673 +461% 0.29% $17,296,311
Polar Asset Management Partners Inc. 6.7% 1,380,000 -6.8% 0.29% $14,600,400
AQR Arbitrage LLC 6.5% 1,347,002 0% 0.3% $14,251,281
BERKLEY W R CORP 5.9% 1,211,674 +608% 0.72% $12,819,511
D. E. Shaw & Co., Inc. 4.8% 989,397 0% 0.01% $10,467,820
MMCAP International Inc. SPC 4.8% 980,000 0% 1% $10,368,400
WOLVERINE ASSET MANAGEMENT LLC 4.7% 972,109 +45% 0.15% $10,284,913
PICTON MAHONEY ASSET MANAGEMENT 4% 824,899 0% 0.1% $8,727,431
Governors Lane LP 3.7% 753,177 0% 0.74% $7,968,613
Crossingbridge Advisors, LLC 3.1% 637,732 2% $6,741,327
GOLDMAN SACHS GROUP INC 2.9% 606,254 0% 0% $6,414,167
RiverPark Advisors, LLC 2.9% 587,732 1.8% $6,218,205
Magnetar Financial LLC 2.5% 520,823 0% 0.05% $5,510,307
LMR Partners LLP 2.4% 500,000 0% 0.05% $5,290,000
Calamos Advisors LLC 2.4% 500,000 0% 0.02% $5,290,000
First Trust Capital Management L.P. 2.2% 445,168 0% 0.29% $4,709,877
ARISTEIA CAPITAL, L.L.C. 1.6% 336,123 0.1% $3,556,181
Westchester Capital Management, LLC 1.6% 325,485 0% 0.16% $3,443,631
RIVERNORTH CAPITAL MANAGEMENT, LLC 1.5% 299,997 0% 0.15% $3,173,968
Context Capital Management, LLC 1.3% 262,951 0% 0.07% $2,782,022
MOORE CAPITAL MANAGEMENT, LP 1.2% 250,000 0% 0.05% $2,645,000
Radcliffe Capital Management, L.P. 1.1% 227,454 +28% 0.13% $2,406,463
Shaolin Capital Management LLC 1.1% 225,000 +14% 0.09% $2,380,500
Wealthspring Capital LLC 1% 208,849 -1.1% 0.52% $2,209,622

Institutional Holders of SilverBox Corp IV - Common Shares (SBXD) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 19,793,495 $209,293,850 +$3,800,741 $10.58 45
2025 Q3 19,267,922 $201,730,829 -$2,831,028 $10.47 50
2025 Q2 19,454,713 $212,900,468 +$5,989,470 $10.96 49
2025 Q1 19,098,220 $194,355,552 +$44,686,640 $10.18 35
2024 Q4 14,708,773 $148,522,320 +$146,274,646 $10.09 25