Calamos Advisors’s SilverBox Corp IV SBXD Stock Holding History

Calamos Advisors’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	$5.41M	Hold	500,000	–	–	0.02%	534
2026 Q1	$5.35M	Hold	500,000	–	–	0.02%	541
2025 Q4	$5.29M	Hold	500,000	–	–	0.02%	518
2025 Q3	$5.24M	Hold	500,000	–	–	0.02%	534
2025 Q2	$5.48M	Hold	500,000	–	–	0.02%	537
2025 Q1	$5.09M	Buy	+500,000	New	+$5.07M	0.02%	519

Other funds holding SBXD

MSU

Mizuho Securities USA New York $6.2B AUM 35.46% 1-Year Est. Return

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

CCM

Context Capital Management Lajolla, California $5.15B AUM 1.28% 1-Year Est. Return

Wealthspring Capital West Harrison, New York $448M AUM 8.38% 1-Year Est. Return

Calamos Advisors's SBXD Position: Q2 2026 in Review

Calamos Advisors held its SilverBox Corp IV (SBXD) position steady in Q2 2026 at 500,000 shares worth $5.41M. The position accounts for 0.02% of the portfolio, ranked #534.

Calamos Advisors first reported a position in SBXD in Q1 2025 and has held it in 6 quarters since. The position peaked at $5.48M in Q2 2025. 6 funds tracked by Wall St. Rank hold SBXD as of Q2 2026.

Calamos Advisors held 500,000 shares of SilverBox Corp IV worth $5.41M as of Q2 2026.
Calamos Advisors left its SilverBox Corp IV share count unchanged in Q2 2026.
SilverBox Corp IV made up 0.02% of Calamos Advisors's portfolio in Q2 2026, its #534 holding.
Calamos Advisors first reported a position in SilverBox Corp IV in Q1 2025 and has held it in 6 quarters since.
Calamos Advisors's SilverBox Corp IV position peaked at $5.48M in Q2 2025.
6 funds tracked by Wall St. Rank held SilverBox Corp IV as of Q2 2026.

Based on Calamos Advisors's 13F filing for Q2 2026, filed 31 Jul 2026.