BlackRock, Inc. Increases Stake in Interactive Brokers Group Inc.

BlackRock, Inc. has filed a Schedule 13G/A amendment with the SEC, disclosing an increase in its ownership of Interactive Brokers Group Inc. Class A Stock. As of the effective date of October 17, 2025, BlackRock, Inc. beneficially owns 27,619,620 shares, representing 6.2% of the total outstanding shares. This marks a significant increase from its previous holdings, with a value change of $26,943,293,056.68 and a shares change of 23,203,773. The filing indicates that BlackRock, Inc. has sole voting power over 25,239,886 shares and sole dispositive power over all 27,619,620 shares. The filing also certifies that the securities were acquired and are held in the ordinary course of business and not for the purpose of influencing the control of the issuer.