MF
SBXD

Magnetar Financial’s SilverBox Corp IV SBXD Stock Holding History

Magnetar Financial’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 		$5.58M Hold
520,823
– – 0.06% 209
2025
Q4 		$5.51M Hold
520,823
– – 0.05% 175
2025
Q3 		$5.45M Sell
520,823
-26,988
-5% -$286K 0.03% 222
2025
Q2 		$5.89M Buy
+547,811
New +$5.74M 0.03% 216

Other funds holding SBXD

LA
Linden Advisors New York $17.9B AUM 1.72% 1-Year Est. Return
MSU
Mizuho Securities USA New York $6.2B AUM 35.46% 1-Year Est. Return
WRBC
W.R. Berkley Corp Greenwich, Connecticut $1.86B AUM 14.44% 1-Year Est. Return
PAMP
Polar Asset Management Partners Toronto, Ontario, Canada $5.01B AUM 35.27% 1-Year Est. Return
AA
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
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
MI
MMCAP International Grand Cayman, Cayman Islands $1.16B AUM 77.9% 1-Year Est. Return
CA
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

Magnetar Financial's SBXD Position: Q1 2026 in Review

Magnetar Financial held its SilverBox Corp IV (SBXD) position steady in Q1 2026 at 520,823 shares worth $5.58M. The position accounts for 0.06% of the portfolio, ranked #209.

Magnetar Financial first reported a position in SBXD in Q2 2025 and has held it in 4 quarters since. The position peaked at $5.89M in Q2 2025. 46 funds tracked by Wall St. Rank hold SBXD as of Q1 2026.

  • Magnetar Financial held 520,823 shares of SilverBox Corp IV worth $5.58M as of Q1 2026.
  • Magnetar Financial left its SilverBox Corp IV share count unchanged in Q1 2026.
  • SilverBox Corp IV made up 0.06% of Magnetar Financial's portfolio in Q1 2026, its #209 holding.
  • Magnetar Financial first reported a position in SilverBox Corp IV in Q2 2025 and has held it in 4 quarters since.
  • Magnetar Financial's SilverBox Corp IV position peaked at $5.89M in Q2 2025.
  • 46 funds tracked by Wall St. Rank held SilverBox Corp IV as of Q1 2026.

Based on Magnetar Financial's 13F filing for Q1 2026, filed 13 May 2026.