13F Insight
DOSSIER · 13F Holders · Q2 2026

SILVERBOX CORP IV

50 institutions still hold SILVERBOX CORP IV as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G81354105·50 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$208M
visible holders
Holders
50
filers reporting
Concentration
18.74%
MIZUHO SECURITIES USA LLC #1
top holder share
AI Holders Summary · Q2 2026

50 institutions reported SILVERBOX CORP IV in Q2 2026. MIZUHO SECURITIES USA LLC leads at 18.7% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
MIZUHO SECURITIES USA LLC
CIK 0000812291
$39M3.6M0.37%Q2 202602
LINDEN ADVISORS LP
CIK 0001279396
$22M2.0M0.11%Q2 202603
BERKLEY W R CORP
CIK 0000011544
$21M1.9M0.96%Q2 202604
Polar Asset Management Partners Inc.
CIK 0001326389
$16M1.5M0.27%Q2 202605
AQR Arbitrage LLC
CIK 0001167456
$14M1.3M0.30%Q4 202506
WOLVERINE ASSET MANAGEMENT LLC
CIK 0001279891
$11M994K0.09%Q2 202607
MMCAP International Inc. SPC
CIK 0001304857
$11M980K0.90%Q2 202608
D. E. Shaw & Co., Inc.
CIK 0001009207
$10M989K0.01%Q4 202509
Crossingbridge Advisors, LLC
CIK 0001770024
$10M929K1.77%Q2 202610
PICTON MAHONEY ASSET MANAGEMENT
CIK 0001539041
$9M825K0.07%Q2 202611
RiverPark Advisors, LLC
CIK 0001484256
$7M679K3.35%Q2 202612
GOLDMAN SACHS GROUP INC
CIK 0000886982
$7M606K0.00%Q2 202613
Calamos Advisors LLC
CIK 0001316507
$5M500K0.02%Q2 202614
LMR Partners LLP
CIK 0001578621
$5M500K0.02%Q2 202615
First Trust Capital Management L.P.
CIK 0001604488
$5M445K0.28%Q2 202616
ARISTEIA CAPITAL, L.L.C.
CIK 0001080171
$4M336K0.05%Q2 202617
Westchester Capital Management, LLC
CIK 0001512805
$4M325K0.17%Q2 202618
RIVERNORTH CAPITAL MANAGEMENT, LLC
CIK 0001447578
$3M300K0.16%Q1 202619
Context Capital Management, LLC
CIK 0001301396
$3M263K0.06%Q2 202620
MOORE CAPITAL MANAGEMENT, LP
CIK 0001448574
$3M250K0.04%Q2 2026
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