Interactive Brokers Group Inc. (IBKR)

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Hedge Fund Holdings
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No. Hedge Fund Shares Value Activity % Port
1.
Cantillon Capital Management

William Von Mueffling

12,803,631 $709,449,194 -3% 4.1%
2. 9,740,072 $539,697,389 -31% 2.62%
3. 8,056,844 $446,429,726 +10% 4.58%
4.
Marshall Wace LLP

Paul Marshall And Ian Wace

5,415,370 $300,065,653 +14% 0.34%
5.
Two Sigma Advisors

John Overdeck And David Siegel

3,378,900 $187,224,849 -1% 0.38%