Interactive Brokers Group Inc. (IBKR)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Vanguard Group Inc	9,690,031	$803,303,570	0.01%
2.	Blackrock Inc.	9,020,185	$747,773,358	0.01%
3.	Kayne Anderson Rudnick Investment Management Llc	6,307,902	$522,925,131	1.3%
4.	State Street Corp	3,094,951	$256,571,438	0.01%
5.	Fmr Llc	1,775,469	$147,186,413	0.01%