Magnetar Financial’s Keystone Acquisition Corp Unit KEYYU Stock Holding History

Magnetar Financial’s Portfolio KEYYU Stock Details KEYYU Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$20.1M	Buy	+2,000,000	New	+$20.1M	0.18%	62

Other funds holding KEYYU

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

LMR Partners London, United Kingdom $26.8B AUM 68.38% 1-Year Est. Return

Healthcare of Ontario Pension Plan (HOOPP) Trust Fund Toronto, Ontario, Canada $71.2B AUM 48.86% 1-Year Est. Return

AIMCA

Alberta Investment Management Corp (AIMCo) Edmonton, Alberta, Canada $17.9B AUM 27.56% 1-Year Est. Return

HIM

HGC Investment Management Toronto, Ontario, Canada $507M AUM 6.15% 1-Year Est. Return

FBCM

Fort Baker Capital Management Larkspur, California $1.37B AUM 26.91% 1-Year Est. Return

BNP Paribas Financial Markets Paris, France $289B AUM 60.46% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

RCM

Radcliffe Capital Management Bala Cynwyd, Pennsylvania $1.32B AUM 1.82% 1-Year Est. Return

Centiva Capital New York $11.5B AUM 31.97% 1-Year Est. Return

Magnetar Financial's KEYYU Position: Q2 2026 in Review

Magnetar Financial opened a new position in Keystone Acquisition Corp Unit (KEYYU) in Q2 2026: 2,000,000 shares worth $20.1M. The stake represents 0.18% of the portfolio and ranks #62 among its holdings.

29 funds tracked by Wall St. Rank hold KEYYU as of Q2 2026.

Magnetar Financial held 2,000,000 shares of Keystone Acquisition Corp Unit worth $20.1M as of Q2 2026.
Keystone Acquisition Corp Unit was a new Magnetar Financial position in Q2 2026.
Keystone Acquisition Corp Unit made up 0.18% of Magnetar Financial's portfolio in Q2 2026, its #62 holding.
29 funds tracked by Wall St. Rank held Keystone Acquisition Corp Unit as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.