Market cap
$51.896 B
$365.96 +4.92%
Close of 21 Sept 2026
Revenue
$4.77B
#697 by revenue
Earnings
$123.3M
#1218 by earnings
Shares outstanding
141,552,922
Latest filing cover page
P/E ratio
420.8
Cap ÷ net income
Telecommunications Equipment, ranked by market cap
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Share counts and financials for Ciena are taken from its own SEC filings via EDGAR: public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Last updated 22 Sept 2026. Read the methodology.