Interactive Brokers Group Inc. (IBKR)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Blackrock, Inc.	31,375,037	$2,104,323,725	0.04%
2.	Vanguard Capital Management Llc	28,180,361	$1,890,056,812	0.04%
3.	State Street Corp	19,092,105	$1,280,507,482	0.04%
4.	Vanguard Portfolio Management Llc	14,984,545	$1,005,013,433	0.05%
5.	Fmr Llc	12,501,284	$838,461,148	0.04%