IBKR

Interactive Brokers Gro-cl A

6 super-investor ownerscombined $1.44Blargest position 30.5%

Cohort owners over time

2016Q2 → 2026Q1

How many of the cohort members held this stock each quarter.

Now: 4

Peak: 4

#↑	Manager	% Port.	History	Value	Shares
1	William Von Mueffling	5.0%	36q	$754M	11,245,881
2	John Armitage	4.7%	9q	$421M	6,275,179
3	Viking Global Investors	0.3%	— 1q	$94M	1,394,329
4	Bryan Lawrence	30.5%	37q	$69M	1,030,740
5	Robert Vinall	13.4%	13q	$51M	757,919
6	Joel Greenblatt	<0.1%	35q	$49M	736,273

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Long US equity 13F-HR filings only. CUSIP 45841N107. Not investment advice.