BlackRock, Inc. Reduces Stake in MarketAxess Holdings Inc.

BlackRock, Inc. has filed a Schedule 13G/A amendment, disclosing a reduction in its ownership of MarketAxess Holdings Inc. common stock. As of September 30, 2025, BlackRock holds 1,572,513 shares, representing a 4.2% ownership stake. This marks a significant decrease from its previous holdings, with a reduction of 1,077,373 shares (40.66%) and a decrease in value by $322,517,000.62 (54.50%). The filing indicates that BlackRock's ownership is now below the 5% threshold, and the shares were not acquired or held for the purpose of influencing control of the issuer. The filing was signed by Spencer Fleming, Managing Director, on October 17, 2025.