Vanguard Capital Management Reports New 5.32% Passive Stake in MarketAxess Holdings Inc (MKTX)

On April 30, 2026, Vanguard Capital Management LLC filed a Schedule 13G with the SEC, reporting a new 5.32% passive ownership stake in MarketAxess Holdings Inc (MKTX). The filing indicates that as of March 31, 2026, Vanguard beneficially owns 1,892,096 shares of common stock. According to the report, the firm holds sole dispositive power over the entire position of 1,892,096 shares, while maintaining sole voting power over 282,837 shares. The filing includes holdings from various affiliates, including Vanguard Asset Management Limited and Vanguard Global Advisers, LLC. This position was acquired in the ordinary course of business and is not intended to influence or change the control of the issuer. This filing marks a significant increase from a previous 0% ownership level, establishing Vanguard as a major institutional shareholder in the electronic trading platform operator.