DOSSIER · 13F Holders · Q1 2026Cheap mega-capRe-rated

SILVERBOX CORP IV

48 institutions still hold SILVERBOX CORP IV as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G81354105·48 13F holders·last filed Mar 31, 2026

Market cap

—

▼ 9.1%

vs prior quarter

13F value held

$184M

69.0% inst. owned

of float

Holders

48

+16 QoQ

filers reporting

Activity

+8 / −6

+819 added · −858 reduced

this quarter

Concentration

11.64%

LINDEN ADVISORS LP #1

top holder share

AI Holders Summary · Q1 2026

48 institutions reported SILVERBOX CORP IV in Q1 2026. LINDEN ADVISORS LP leads at 11.6% of the visible book. +16 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter

LINDEN ADVISORS LP

$21M2.0M0.12%Q1 2026 02

MIZUHO SECURITIES USA LLC

$19M1.8M0.45%Q1 2026 03

BERKLEY W R CORP

$16M1.5M0.87%Q1 2026 04

Polar Asset Management Partners Inc.

$16M1.5M0.32%Q1 2026 05

AQR Arbitrage LLC

$14M1.3M0.30%Q4 2025 06

WOLVERINE ASSET MANAGEMENT LLC

$11M994K0.10%Q1 2026 07

MMCAP International Inc. SPC

$10M980K0.91%Q1 2026 08

D. E. Shaw & Co., Inc.

$10M989K0.01%Q4 2025 09

Crossingbridge Advisors, LLC

$10M977K1.89%Q1 2026 10

PICTON MAHONEY ASSET MANAGEMENT

$9M825K0.07%Q1 2026 11

RiverPark Advisors, LLC

$7M679K2.63%Q1 2026 12

GOLDMAN SACHS GROUP INC

$6M606K0.00%Q1 2026 13

Calamos Advisors LLC

$5M500K0.02%Q1 2026 14

LMR Partners LLP

$5M500K0.01%Q1 2026 15

First Trust Capital Management L.P.

$5M445K0.25%Q1 2026 16

ARISTEIA CAPITAL, L.L.C.

$4M336K0.07%Q1 2026 17

Westchester Capital Management, LLC

$3M325K0.16%Q1 2026 18

RLH Capital LLC

$3M304K1.65%Q1 2026 19

RIVERNORTH CAPITAL MANAGEMENT, LLC

$3M300K0.16%Q1 2026 20

Shaolin Capital Management LLC

$3M280K0.11%Q1 2026

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