CIEN
CIENA CORP
NYSE · Technology · Communication Equipment · US
$320.26
−0.74%Price chart
Sep 24Sep 29Oct 2Oct 7Oct 12Oct 15Oct 20Oct 23
Key dataOct 23, 2026
Open$325.95
From 52W high−48.92%
Volume1.97M
Market cap$45.42B
P/E (TTM)69.3x
P/S (TTM)7.5x
Div yield—
Key dataOct 23, 2026
Open
$325.95
From 52W high
−48.92%
Volume
1.97M
Market cap
$45.42B
ValuationView details →
P/E (Fwd)
30.8x
EV/EBITDA
44.3x
P/E (TTM)
69.3x
RSI (14)
40.4
MomentumView details →
1D Return
−0.74%
YTD Return
+39.26%
SummaryUpdated Aug 1, 2026
Ciena Corporation (NASDAQ:CIEN) is a Maryland-based telecommunications equipment manufacturer founded in 1992 and publicly traded since 1997. The company has evolved from its origins as an optical networking pioneer to become a leading provider of network infrastructure hardware, software, and services that enable the transport and management of data traffic across global communications networks. Ciena serves telecommunications service providers, cloud companies, government agencies, and enterprises worldwide, positioning itself at the center of the digital transformation driving increased demand for network capacity and performance.
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Latest newsMore news →
Space Norway AS announced a deal with CIENA CORP to upgrade the Svalbard Undersea Cable System and equip the upcoming Arctic Way Cable System with CIENA CORP optical technology.12d agoCIENA CORP is deploying 1.6Tb/s optical technology for Openreach.17d agoAngola Cables is upgrading capacity on its MONET and South Atlantic Cable System (SACS) submarine networks using Ciena's Waveserver platform with WaveLogic 6 Extreme coherent optics, enabling 800Gbps services on the US-Brazil-Angola route.26d ago