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Home > Insider Trading > Ciena Corp

Ciena Corp (CIEN)

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Institutional Investors' Holdings

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No.	Name	Shares	Value	% Port
1.	Blackrock, Inc.	17,039,301	$1,029,684,962	0.02%
2.	Vanguard Group Inc	14,985,246	$905,558,414	0.02%
3.	William Blair Investment Management, Llc	2,005,631	$121,200,281	0.34%
4.	Bank Of New York Mellon Corp	1,179,719	$71,290,430	0.01%
5.	Schwab Charles Investment Management Inc	952,805	$57,578,006	0.01%