Netscout Systems Inc (NTCT)

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Institutional Investors' Holdings

Filing Period: Filing is Ongoing

No.	Name	Shares	Value	% Port
1.	Blackrock, Inc.	11,960,848	$251,297,416	0.01%
2.	Vanguard Group Inc	9,301,998	$195,434,977	0%
3.	Goldman Sachs Group Inc	1,420,479	$29,844,264	0%
4.	Schwab Charles Investment Management Inc	1,264,530	$26,567,775	0%
5.	Assenagon Asset Management S.a.	1,152,379	$24,211,483	0.04%