Vanguard Group's 13G/A Filing for MarketAxess Holdings Inc

The Vanguard Group has filed a Schedule 13G/A amendment with the SEC, disclosing its ownership of 3,854,312 shares of MarketAxess Holdings Inc's common stock, representing 10.31% of the total shares outstanding. The filing indicates that Vanguard holds these shares on behalf of its clients, including investment companies and managed accounts. The shares are held in the ordinary course of business and not for the purpose of influencing control of the issuer. The amendment was signed by Ashley Grim, Head of Global Fund Administration, on October 31, 2025.