Griffin's Citadel Boosts Stake in Ciena Corporation (CIEN) to 5.1% Mar 19, 2013 09:22AM
Citadel Raises Stake in Ciena Corporation (CIEN) to 5.41% Jan 12, 2012 09:29AM
Year-Long Decline in Ciena (CIEN) Creates Buying Opportunity -Barron's Sep 22, 2008 11:29AM
Griffin's Citadel Accumulates 5% Stake in Ciena (CIEN) Aug 19, 2008 09:51AM