Primecap Management Co/Ca/ - Sep 30, 2025 SCHEDULE 13G Report for MarketAxess Holdings Inc. COM (MKTX)

Filing Manager: PRIMECAP MANAGEMENT CO/CA/
Reporting Manager: PRIMECAP MANAGEMENT CO/CA/
Security: MarketAxess Holdings Inc. COM
Symbol: MKTX
Shares outstanding: 37.4M shares
Disclosed Ownership: 2.23M shares
Ownership: 5.97%
Form type: SCHEDULE 13G
Date filed: 11/13/2025, 08:32 PM
Date of event: Sep 30, 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
PRIMECAP MANAGEMENT CO/CA/	5.97%	2.23M	2.22M	0	Jorge A. Rodriguez	Deputy Chief Compliance Officer