Interactive Brokers Group Inc. Schedule 13G/A Filing

This filing is an amendment (Amendment No. 13) to a Schedule 13G by The Vanguard Group, Inc. regarding Interactive Brokers Group Inc. The filing indicates that as of March 13, 2026, The Vanguard Group, Inc. holds 0 shares of Interactive Brokers Group Inc. common stock. The filing also notes that as of January 12, 2026, an internal realignment occurred, leading to the disaggregation of beneficial ownership reporting for certain subsidiaries and business divisions of The Vanguard Group, Inc. Consequently, these entities will now report their beneficial ownership separately. The Vanguard Group, Inc. certifies that the securities were acquired and are held in the ordinary course of business and not for the purpose of influencing control of the issuer.