Polar Asset Management Partners’s SilverBox Corp IV SBXD Stock Holding History

Polar Asset Management Partners’s Portfolio SBXD Stock Details SBXD Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$16.1M	Buy	1,508,005 +128,005	+9%	+$1.36M	0.32%	55
2025 Q4	$14.6M	Sell	1,380,000 -100,000	-7%	-$1.05M	0.19%	99
2025 Q3	$15.5M	Hold	1,480,000	–	–	0.17%	92
2025 Q2	$16.2M	Sell	1,480,000 -500,000	-25%	-$5.24M	0.25%	60
2025 Q1	$20.1M	Hold	1,980,000	–	–	0.46%	42
2024 Q4	$20M	Buy	+1,980,000	New	+$19.9M	0.23%	84

Other funds holding SBXD

Linden Advisors New York $17.9B AUM 1.72% 1-Year Est. Return

MSU

Mizuho Securities USA New York $4.24B AUM 22.54% 1-Year Est. Return

WRBC

W.R. Berkley Corp Greenwich, Connecticut $1.86B AUM 14.44% 1-Year Est. Return

AQR Arbitrage Greenwich, Connecticut $6.09B AUM 27.01% 1-Year Est. Return

WAM

Wolverine Asset Management Chicago, Illinois $10.4B AUM 4.78% 1-Year Est. Return

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

MMCAP International Grand Cayman, Cayman Islands $1.16B AUM 77.9% 1-Year Est. Return

Crossingbridge Advisors Pleasantville, New York $553M AUM 1.29% 1-Year Est. Return

PMAM

Picton Mahoney Asset Management Toronto, Ontario, Canada $13.5B AUM 50.48% 1-Year Est. Return

RiverPark Advisors New York $219M AUM 14.91% 1-Year Est. Return

Polar Asset Management Partners's SBXD Position: Q1 2026 in Review

Polar Asset Management Partners increased its SilverBox Corp IV (SBXD) stake by 9.3% in Q1 2026, buying an estimated $1.36M and bringing the position to 1,508,005 shares worth $16.1M. The position accounts for 0.32% of the portfolio, ranked #55.

Polar Asset Management Partners first reported a position in SBXD in Q4 2024 and has held it in 6 quarters since. The position peaked at $20.1M in Q1 2025. 46 funds tracked by Wall St. Rank hold SBXD as of Q1 2026.

Polar Asset Management Partners held 1,508,005 shares of SilverBox Corp IV worth $16.1M as of Q1 2026.
Polar Asset Management Partners bought 128,005 SilverBox Corp IV shares in Q1 2026, an estimated $1.36M.
SilverBox Corp IV made up 0.32% of Polar Asset Management Partners's portfolio in Q1 2026, its #55 holding.
Polar Asset Management Partners first reported a position in SilverBox Corp IV in Q4 2024 and has held it in 6 quarters since.
Polar Asset Management Partners's SilverBox Corp IV position peaked at $20.1M in Q1 2025.
46 funds tracked by Wall St. Rank held SilverBox Corp IV as of Q1 2026.

Based on Polar Asset Management Partners's 13F filing for Q1 2026, filed 15 May 2026.