CIEN key data
Dividends & corporate actions
- Split — 1-for-7 on September 25, 2006.
About Ciena
Ciena is a leader in high-speed optical connectivity, providing systems, components, and automation software for telecom providers and enterprises, such as data centers, to enable long-distance connectivity. The company operates through four primary business segments: networking platforms, platform software and services, Blue Planet automation software, and global services. While telecom carriers remain important customers, cloud providers and hyperscalers now drive a significant portion of the business. To meet the demands of AI data centers, customers are adopting Ciena's WaveLogic 6 platform, the first to support 1.6 terabits-per-second capacity.
CIEN price chart
Daily open, high, low and close with volume.
Quotes are delayed at least 15 minutes.
CIEN technical indicators
Computed daily from CIEN's own price history — not third-party ratings. Technical analysis describes past price behaviour; it is information, not investment advice.
CIEN classic pivot support & resistance levels
Multi-horizon momentum & trend matrix
Fibonacci retracement
Based on CIEN's high/low over the same history as the chart above.
CIEN annual investment, R&D and cash flow
Quarterly highlights and original SEC reports
Verified annual USD facts from SEC filings. Collected Nov 13, 2026 02:08 UTC.
Source: the SEC Company Facts API, using standard US GAAP facts in USD from annual 10-K, 20-F or 40-F filings and amendments. Periods must span 300-400 days. Quarterly and year-to-date values are not presented as annual totals.
- Cash capex is cash payments to acquire property, plant and equipment. It excludes broader acquisition or intangible-asset tags and is not total AI spending or an estimate of finance-lease investment.
- Productive asset purchases are a separately reported, broader cash investment measure. They are shown in their own column and never substituted into PP&E capex, capital intensity or free cash flow. Do not rank mixed definitions as if they were identical.
- Free cash flow here is operating cash flow minus cash capex. It may differ from a company's adjusted free cash flow definition. If either input is missing, the result is omitted.
- R&D intensity is reported research and development expense divided by revenue from the same annual reporting period. Operating cash margin and capital intensity use the same-period revenue denominator.
- Figures are company-wide, not AI-specific or segment-level. Financial years differ, so compare the displayed start and end dates rather than assuming calendar-year alignment.
- The latest available filing for each supported fact is used, including restated comparative figures. Conflicting values from equally recent reports are omitted. Every figure retains its XBRL tag, accession and filing date.
Company-specific extension tags, IFRS-only data and unsupported definitions are not estimated. Missing standard facts are shown as unavailable, not zero. Data is refreshed in the background; the collection time is separate from the filing date.
CIEN insider & major institutional ownership filings (SEC Form 4 · 13D/13G)
Direct executive/director stock transactions (Form 4) and 5%+ institutional or activist ownership disclosures (Schedule 13D/13G) filed with the U.S. SEC.
CIEN vs. related companies
Compare reported revenue growth, profitability and valuation. Related companies can have different business models and fiscal calendars.
Related companies are drawn from our coverage universe and may operate in different industries. Prices reflect the latest available market close.
Stock prices reflect the latest available market close. Market capitalisation and financial results may have different reporting dates; refer to the dates shown when comparing companies.
- Revenue growth compares the latest fiscal quarter with the same fiscal quarter a year earlier. Missing or ambiguous comparison periods are not estimated.
- TTM means trailing twelve months. Comparisons require four reported quarters with consistent USD units; unknown or other currencies are not converted or mixed. Net margin is TTM net income divided by TTM revenue.
- P/E uses the displayed close divided by TTM diluted EPS and is omitted for non-positive earnings. P/S uses reference market capitalisation divided by positive TTM revenue; it is not enterprise value to sales.
- Financial figures cover the whole company unless a business segment is specified. Inclusion in an AI theme does not indicate the share of revenue generated by AI.
- Fiscal calendars and reporting dates differ. Check each row's period end and filing date before comparing. Missing values are shown as —, not zero; funds do not receive operating-company ratios.
Theme membership is editorial, not an investment recommendation or a complete market universe. Compare similar business models and verify financial statements through the company website linked on each stock page.
Ciena (CIEN) Stock Price Prediction: Rebound attempt collides with weak momentum and selling pressure
Ciena (CIEN) is trading at $286.48 after a 1.89% 24-hour decline, with the price sitting below the 20-day and 50-day moving averages but still above the 7-day and 12-day averages. Binance perpetual...
More on CIEN
CIEN forecasts
Where CIEN could go next, from our forecast desk.
Ciena (CIEN) Stock Price Prediction: Rebound attempt collides with weak momentum and selling pressure
Ciena (CIEN) Stock Price Prediction: Bearish momentum meets oversold conditions near support
CIEN frequently asked questions
What is the CIEN stock price today?
Ciena (CIEN) last closed at $293.99 on November 12, 2026. Quotes are delayed at least 15 minutes.
What is the 52-week range for CIEN?
Over the past 52 weeks CIEN has traded between $168.22 and $637.51.
What is Ciena's market cap?
Ciena has a market capitalisation of about $41.69 billion.
Which exchange is CIEN listed on?
CIEN trades on NYSE, in the Telephone & Telegraph Apparatus industry.
When did CIEN last split?
Ciena last executed a 1-for-7 stock split on September 25, 2006.
Where can I find the latest CIEN news?
Blockchain.News publishes CIEN coverage and price forecasts on this page, with 3 stories filed so far. This is information, not investment advice.
Is CIEN overbought or oversold?
CIEN's 14-day relative strength index (RSI) is 44.9, which is neutral on the standard 30/70 scale. RSI measures the speed of recent price moves, not a price target — this is not investment advice.
Is CIEN in an uptrend or downtrend?
CIEN's 50-day moving average is currently below its 200-day moving average — a Death Cross (bearish long-term trend) in classic technical-analysis terms. Moving-average crossovers describe past price behaviour, not a forecast.
CIEN sectors
Others in Semiconductors
Related stocks
Coverage is for information only and is not investment advice. Stock prices can move quickly and past performance does not guarantee future results.
Quotes are delayed at least 15 minutes. Last updated November 12, 2026.
