Ciena Corp (CIEN) stock
Close on Nov 11, 2026Market cap $41.98BP/E 66.1Yield –
Ciena Corp grew revenue 32.6% to $6.02B over the twelve months to Aug 1, 2026. Operating income rose 200.1% to $738.95M, moving the operating margin from 5.4% to 12.3%. Free cash flow was $814.36M, up 34.5% from a year earlier. At the latest close the market valued the company at $41.98B, 66.1 times its earnings.
Key statistics
Valuation at the latest close; fundamentals over the trailing twelve months, balances at Aug 1, 2026
Valuation
- Market cap
- $41.98B
- P/E ratio
- 66.1
- Price to sales
- 6.97
- Price to book
- 13.73
- Dividend yield
- –
- Free cash flow yield
- 1.94%
Fundamentals
- Revenue
- $6.02B
- Net income
- $654.41M
- EPS, diluted
- $4.48
- Free cash flow
- $814.36M
- Book value per share
- $20.94
- Diluted shares
- 146M
Trading
- Next earnings
- Dec 10, 2026 (estimated, before the open)
- Previous close
- $272.10
- Open
- $295.21
- Day's range
- $286.00 – $305.29
- Volume
- 3,717,601
- Average volume (20 days)
- 3,325,499
- Index membership
- S&P 500 (since Mar 2026), Russell 1000, Russell 3000
- Beta (5 years)
- 1.51
- 52-week range
- $168.22 – $637.51
- RSI (14 days)
- 45.3
- Volatility (1 year)
- 81.1%
- Relative volume
- 1.42×
- WACC
- 11.9%
Index membership is inferred from the holdings of funds that track each index (VOO, IVV, SPYM, IWB, IWV), as reported to the SEC for Jun 30, 2026. Join dates come from quarterly fund reports since 2019, so they are accurate to the quarter.
Market cap history
Month-end market cap since 2009, using shares outstanding reported at the time
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Nov 11, 2026. The S&P 500 is measured by the SPY fund.
| Period | CIEN | S&P 500 | Difference | CIEN per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | -34.2% | -2.4% | −31.8 pts | ||
| 3 months | -23.6% | -1.2% | −22.5 pts | ||
| Year to date | +26.6% | +12.3% | +14.3 pts | ||
| 1 year | +42.7% | +12.4% | +30.3 pts | ||
| 3 years | +570.8% | +78.8% | +492.0 pts | +88.6% | +21.4% |
| 5 years | +386.4% | +75.2% | +311.3 pts | +37.2% | +11.9% |
| 10 years | +1261.7% | +311.1% | +950.6 pts | +29.8% | +15.2% |
Fifteen years at a glance
Fiscal years 2011 to 2025 and trailing twelve months, USD
Revenue
Gross profit
Operating income
Net income
EPS, diluted
Free cash flow
Press releases
Releases Ciena filed with the SEC as exhibits to Form 8-K or 6-K
- Results
- Results
- News
- News
- Results
- Results
About Ciena
Telephone & Telegraph Apparatus
Ciena is a networking technology provider that supplies hardware, software, and services to enable enhanced network capacity, service delivery, and automation. The company operates across four primary business segments: Networking Platforms, Platform Software and Services, Blue Planet Automation Software and Services, and Global Services. Its hardware offerings include optical transport and switching platforms, routing and switching systems, and coherent pluggable transceivers. Complementing its physical architecture, the company provides domain control, analytics, and lifecycle automation software, alongside professional, deployment, and maintenance services. Its client base spans cloud and web-scale providers, communications carriers, cable and multiservice operators, governments, research institutions, and large enterprises.
Company profile, executives and historyCiena stock: common questions
What is Ciena's stock price?
CIEN closed at $296.04 on Nov 11, 2026, up 8.80% on the day. Over the past 52 weeks it traded between $168.22 and $637.51.
What is Ciena's market cap?
Ciena was worth $41.98B at the close on Nov 11, 2026: the share price times the diluted shares outstanding.
What is CIEN's P/E ratio?
CIEN trades at 66.1 times earnings, based on diluted earnings per share of $4.48 over the twelve months to Aug 1, 2026.
How much revenue does Ciena make?
Ciena reported revenue of $6.02B for the twelve months to Aug 1, 2026, up 32.6% from a year earlier.
Does Ciena pay a dividend?
No. Ciena has not paid a cash dividend over the last twelve months.
When does Ciena report earnings next?
Ciena is expected to report Q4 FY2026 results on Dec 10, 2026, before the open. The date is estimated from its past reporting pattern until the company confirms it.
How has CIEN stock performed over the past year?
Including dividends, CIEN returned +42.7% over the past year, against +12.4% for the S&P 500.
How many CIEN shares are sold short?
4M shares were sold short at the latest FINRA report, 2.79% of the float, or 1.4 days of average trading volume.
Who are Ciena's competitors?
Companies most similar to Ciena by business, industry and size include FN, ADTN, UI, NOK, LITE.
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