Citadel Securities GP LLC and Kenneth Griffin Increase Stake in Core Scientific, Inc. to 4.1%

Citadel Securities GP LLC, along with Kenneth Griffin and associated entities, filed a Schedule 13G/A on May 15, 2026, regarding their holdings in Core Scientific, Inc. (CORZ). The filing reveals that Citadel Securities GP LLC, Citadel Securities Group LP, and Kenneth Griffin are deemed to beneficially own 12,792,480 shares of common stock, representing 4.1% of the class outstanding. This reported position is an increase from a previously reported 0.0% ownership. Specifically, Citadel Securities LLC directly holds 9,357,746 shares (3.0%). The reporting persons share voting and dispositive power over these shares. The calculation is based on 315,596,127 shares outstanding, which includes shares issuable upon the conversion of warrants. The filing indicates that the securities were acquired in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. Kenneth Griffin, through his controlling interest in the GP entities, maintains shared beneficial ownership of the total aggregate amount.