Mizuho Securities USA’s SilverBox Corp IV SBXD Stock Holding History

Mizuho Securities USA’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 Q2	$19.8M	Buy	1,840,442 +43,495	+2%	+$469K	0.32%	49
2026 Q1	$19.2M	Buy	1,796,947 +151,274	+9%	+$1.61M	0.45%	34
2025 Q4	$17.3M	Buy	1,645,673 +1,352,414	+461%	+$14.2M	0.29%	45
2025 Q3	$3.07M	Buy	+293,259	New	+$3.1M	0.06%	306
2025 Q1	–	Sell	-24,699	Closed	-$246K	–	677
2024 Q4	$246K	Buy	+24,699	New	+$248K	﹤0.01%	590

Other funds holding SBXD

Linden Advisors New York $19.3B AUM 1.47% 1-Year Est. Return

WRBC

W.R. Berkley Corp Greenwich, Connecticut $2.18B AUM 13.58% 1-Year Est. Return

PAMP

Polar Asset Management Partners Toronto, Ontario, Canada $6.07B AUM 34.81% 1-Year Est. Return

AQR Arbitrage Greenwich, Connecticut $7.02B AUM 31.58% 1-Year Est. Return

WAM

Wolverine Asset Management Chicago, Illinois $11.4B AUM 5.65% 1-Year Est. Return

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

MMCAP International Grand Cayman, Cayman Islands $1.18B AUM 50.44% 1-Year Est. Return

Crossingbridge Advisors Pleasantville, New York $567M AUM 0.34% 1-Year Est. Return

PMAM

Picton Mahoney Asset Management Toronto, Ontario, Canada $13.5B AUM 51.46% 1-Year Est. Return

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

Mizuho Securities USA's SBXD Position: Q2 2026 in Review

Mizuho Securities USA increased its SilverBox Corp IV (SBXD) stake by 2.4% in Q2 2026, buying an estimated $469K and bringing the position to 1,840,442 shares worth $19.8M. The position accounts for 0.32% of the portfolio, ranked #49.

Mizuho Securities USA first reported a position in SBXD in Q4 2024 and has held it in 5 quarters since. 48 funds tracked by Wall St. Rank hold SBXD as of Q2 2026.

Mizuho Securities USA held 1,840,442 shares of SilverBox Corp IV worth $19.8M as of Q2 2026.
Mizuho Securities USA bought 43,495 SilverBox Corp IV shares in Q2 2026, an estimated $469K.
SilverBox Corp IV made up 0.32% of Mizuho Securities USA's portfolio in Q2 2026, its #49 holding.
Mizuho Securities USA first reported a position in SilverBox Corp IV in Q4 2024 and has held it in 5 quarters since.
48 funds tracked by Wall St. Rank held SilverBox Corp IV as of Q2 2026.

Based on Mizuho Securities USA's 13F filing for Q2 2026, filed 24 Jul 2026.