Interdigital Inc. (IDCC)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Blackrock, Inc.	4,287,786	$886,499,811	0.02%
2.	Vanguard Group Inc	3,294,537	$681,145,525	0.01%
3.	Boston Partners	1,214,475	$249,905,556	0.3%
4.	Disciplined Growth Investors Inc	1,084,353	$224,189,983	4.64%
5.	State Street Corp	1,013,173	$209,473,518	0.01%