Magnetar Financial LLC sold large blocks of CoreWeave stock on April 16, 2026. The firm reported the transactions on April 18. One sale involved 229,275 shares for approximately $26.9 million. These shares traded at prices between $117.96 and $120.64. A second reported sale on the same day totaled $166.17 million.
Magnetar-related entities continue to hold a multi-million share position in the AI infrastructure company. The transactions represent a partial trimming of the stake rather than a complete exit.
The sales follow several positive developments for CoreWeave. The company recently signed a $6 billion agreement with Jane Street. It also launched a new $1 billion senior notes offering.