MF
CAPN

Magnetar Financial’s Cayson Acquisition Corp CAPN Stock Holding History

Magnetar Financial’s Portfolio CAPN Stock Details CAPN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-75,000
Closed -$800K – 1455
2025
Q4 		$800K Hold
75,000
– – 0.01% 476
2025
Q3 		$785K Hold
75,000
– – ﹤0.01% 503
2025
Q2 		$773K Buy
+75,000
New +$767K ﹤0.01% 478

Other funds holding CAPN

WRBC
W.R. Berkley Corp Greenwich, Connecticut $1.86B AUM 14.44% 1-Year Est. Return
MSU
Mizuho Securities USA New York $6.2B AUM 35.46% 1-Year Est. Return
RCM
Rivernorth Capital Management West Palm Beach, Florida $2B AUM 0.79% 1-Year Est. Return
WAM
Wolverine Asset Management Chicago, Illinois $10.4B AUM 4.78% 1-Year Est. Return
PAMP
Polar Asset Management Partners Toronto, Ontario, Canada $5.01B AUM 35.02% 1-Year Est. Return
SCM
Shaolin Capital Management Miami, Florida $2.71B AUM 64.57% 1-Year Est. Return
AA
AQR Arbitrage Greenwich, Connecticut $6.09B AUM 26.7% 1-Year Est. Return
HCM
Heights Capital Management San Francisco, California $359M AUM 8.03% 1-Year Est. Return
CS
Clear Street New York $24.6B AUM 56.25% 1-Year Est. Return
RC
RLH Capital Great Neck, New York $197M AUM

Magnetar Financial's CAPN Position: Q1 2026 in Review

Magnetar Financial sold out of Cayson Acquisition Corp (CAPN) in Q1 2026, closing a stake of 75,000 shares — an estimated $800K sold.

Magnetar Financial first reported a position in CAPN in Q2 2025 and held it in 3 quarters. The position peaked at $800K in Q4 2025. 16 funds tracked by Wall St. Rank hold CAPN as of Q1 2026.

  • Magnetar Financial reported no remaining Cayson Acquisition Corp position as of Q1 2026 after selling out during the quarter.
  • Magnetar Financial sold 75,000 Cayson Acquisition Corp shares in Q1 2026, an estimated $800K.
  • Magnetar Financial first reported a position in Cayson Acquisition Corp in Q2 2025 and held it in 3 quarters.
  • Magnetar Financial's Cayson Acquisition Corp position peaked at $800K in Q4 2025.
  • 16 funds tracked by Wall St. Rank held Cayson Acquisition Corp as of Q1 2026.

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