Market cap
$58.375 B
$412.39 +2.14%
Close of 7 Aug 2026
Revenue
$4.77B
#696 by revenue
Earnings
$123.3M
#1222 by earnings
Shares outstanding
141,552,922
Latest filing cover page
P/E ratio
473.3
Cap ÷ net income
Telecommunications Equipment — ranked by market cap
All 82 →Where these numbers come from
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 9 Aug 2026. Read the methodology.