BlackRock, Inc. - 31 Jan 2026 SCHEDULE 13G/A Report for MarketAxess Holdings Inc Common Stock (MKTX)

Filing Manager: BlackRock, Inc.
Reporting Manager: BlackRock, Inc.
Security: MarketAxess Holdings Inc Common Stock
Symbol: MKTX
Shares outstanding: 37,014,101 shares
Disclosed Ownership: 4,034,537 shares
Ownership: 11%
Form type: SCHEDULE 13G/A
Filing time: 06 Feb 2026, 12:08:57 UTC
Date of event: 31 Jan 2026
Previous filing: 21 Jan 2026
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
BlackRock, Inc.	11%	4,034,537	3,958,354	0	Spencer Fleming	Managing Director