CIEN

CIENA CORP

Superinvestors

Institutional investors holding CIEN

Investor	Fund	Weight	Shares	Value	Quarter
Stephen Mandel	Lone Pine Capital	2.51%	809,522	$314.3M	2026Q1
Viking Global Investors	Viking Global Investors	0.69%	2,147,000	$11.1M	2003Q2
Chuck Akre	Akre Capital Management	0.45%	5,500	$447K	2000Q4
Mairs & Power	Mairs & Power Growth Fund	0.01%	2,800	$1.1M	2026Q1
First Eagle Investment Management	First Eagle Investment Management	0.00%	2,600	$1.0M	2026Q1
Kenneth Fisher	Fisher Asset Management	0.00%	610	$237K	2026Q1
Dodge & Cox	Dodge & Cox	0.00%	11,230	$188K	2014Q3
Francois Rochon	Giverny Capital	0.00%	661	$33K	2024Q1

Congressional data coming soon

Total trades

$22.7M

Volume

Buys

Sells

Last trade: May 15, 2026

Date	Insider	Type	Value
May 15, 2026	Brodie Gage	Sell	$1.7M
May 15, 2026	Brodie Gage	Sell	$1.4M

Congressional trade data is being sourced and will appear here shortly.