BlackRock, Inc. - 30 Sep 2025 SCHEDULE 13G/A Report for INTERACTIVE BROKERS GROUP INC Class A Stock (IBKR)

Filing Manager: BlackRock, Inc.
Reporting Manager: BlackRock, Inc.
Security: INTERACTIVE BROKERS GROUP INC Class A Stock
Symbol: IBKR
Shares outstanding: 445,477,742 shares
Disclosed Ownership: 27,619,620 shares
Ownership: 6.2%
Form type: SCHEDULE 13G/A
Filing time: 17 Oct 2025, 18:13:44 UTC
Date of event: 30 Sep 2025
Previous filing: 05 Feb 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
BlackRock, Inc.	6.2%	27,619,620	25,239,886	0	Spencer Fleming	Managing Director