Magnetar Funds' Options Expire Worthless on CoreWeave Stock

This Form 4 filing reports that multiple Magnetar Capital funds had call and put options on CoreWeave, Inc. Class A Common Stock that expired worthless on June 18, 2026. The options were part of collar arrangements established on September 30, 2025, with call strike prices at $200 and put strike prices at $115. All options expired unexercised because CoreWeave's stock price closed between these strike prices on the expiration date. The filing covers 12 different Magnetar funds and related entities, including CW Opportunity 2 LP, Magnetar Capital Master Fund, and others, with total underlying shares of approximately 500,000. The reporting entities disclaim beneficial ownership of the underlying shares except to the extent of their pecuniary interest.