X0708 D LIVE 0002143176 Magnetar Co-Invest LLC 50 Hudson Yards New York NY NEW YORK 10001 212-810-5300 DELAWARE None None Limited Liability Company true 2026 Connor Hartley 50 Hudson Yards New York NY NEW YORK 10001 Executive Officer Managing Director of the Issuer's Manager Pooled Investment Fund Other Investment Fund false Decline to Disclose 06b 3C 3C.7 false true false true true false 0 158000000 0 158000000 false 0 0 0 0 false Magnetar Co-Invest LLC David Maryles David Maryles Managing Director of the Issuer's Manager 2026-07-06