CIEN
CIENA CORP
NYSE · Technology · Communication Equipment · US
$348.80
+1.32%Price chart
Aug 19Aug 24Aug 27Sep 1Sep 4Sep 10Sep 15Sep 18
Key dataSep 18, 2026
Open$355.87
From 52W high−44.37%
Volume4.81M
Market cap$49.46B
P/E (TTM)75.5x
P/S (TTM)8.2x
Div yield—
Key dataSep 18, 2026
Open
$355.87
From 52W high
−44.37%
Volume
4.81M
Market cap
$49.46B
ValuationView details →
P/E (Fwd)
33.6x
EV/EBITDA
48.4x
P/E (TTM)
75.5x
RSI (14)
43.7
MomentumView details →
1D Return
+1.32%
YTD Return
+45.90%
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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Ciena guided fiscal 2027 to record profitability and disclosed expected price increases ranging from high single digits to the high teens or low twenties depending on product line.4d agoCiena Corporation announced fiscal year 2029 financial targets at its Investor Forum held at its R&D facility in Ottawa, Ontario, Canada.4d agoCiena launched a $200 million venture fund targeting AI-driven networking, data centers and optical technologies.5d ago