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

12,759,904 $820,589,426 +1% 4.44%
2. 9,273,735 $596,393,898 -3% 2.5%
3. 6,939,581 $446,284,454 +11% 4.85%
4.
Two Sigma Advisors

John Overdeck And David Siegel

4,597,600 $295,671,656 +10% 0.57%
5.
Marshall Wace LLP

Paul Marshall And Ian Wace

3,204,247 $206,065,126 -9% 0.19%