Optical networking gear maker Ciena (CIEN) is -6.3% after UBS cut its rating to Sell from...

|About: Ciena Corporation (CIEN)|By:, SA News Editor

Optical networking gear maker Ciena (CIEN) is -6.3% after UBS cut its rating to Sell from Neutral. UBS thinks the digestion of Nortel's metro Ethernet unit "will limit the business model to high single-digit operating margins." Ciena owns about 10% of the optical market, and will probably do deals over time to increase market share.