Ciena Corp (CIEN) stock analysis
Close on Nov 11, 2026Market cap $41.98BP/E 66.1Yield –
StockData Score
Prices as of Nov 11, 2026How the score works
Mixed12 of 30 checks passed
Ciena passes 12 of the 30 checks behind our score; 5 could not be run for lack of data and count as not passed. Each dot in the shape is one check — hover it for the numbers.
- Valuation
- 0/6
- Growth
- 4/6
- Past performance
- 4/6
- Financial health
- 4/6
- Dividend
- 0/6
What stands out
Return on capital over 10%
Return on invested capital was 20.0%, above the 10% that usually covers the cost of capital.
Earnings growth accelerating
Net income grew 365% over the last twelve months, against a 5-year average of -19.3% a year.
Interest well covered
Operating income covers interest expense 10.6 times.
Debt covered by cash flow
Operating cash flow over the last twelve months equals 32.7% of total debt.
What to watch
Margin of safety under 20%
The price is 115% above fair value, so there is no margin of safety.
Trading above fair value
The share price of $296.04 is above our fair value estimate of $137.56.
Return on equity under 15%
Return on equity was 22.4% over the last twelve months and averaged 8.0% over five years; we look for 15% on both.
High debt
Debt is 106% of shareholders' equity, above the 40% we consider low.
Valuation0/6
P/E above its 5-year median
Ciena's P/E of 66.1 is above its own 5-year median of 47.6.
P/E above the industry
Ciena's P/E of 66.1 is above the Communications Equipment median of 24.9.
EV/EBITDA above its 5-year median
Ciena's EV/EBITDA of 57.6 is above its 5-year median of 31.7.
P/B above the industry
Ciena's price-to-book of 13.73 is above the Communications Equipment median of 2.54.
Trading above fair value
The share price of $296.04 is above our fair value estimate of $137.56.
Margin of safety under 20%
The price is 115% above fair value, so there is no margin of safety.
Growth4/6
Revenue growing under 10% a year
Revenue grew 9.5% a year over the last three fiscal years, short of the 10% we look for.
EPS growing under 10% a year
Diluted EPS grew -5.3% a year over the last three fiscal years.
Earnings growth accelerating
Net income grew 365% over the last twelve months, against a 5-year average of -19.3% a year.
Growing faster than the industry
Revenue grew 32.6% over the last twelve months; the Communications Equipment median is 10.9%.
Guidance raised
Ciena raised its fiscal year 2026 revenue guidance outlook on Sep 3, 2026.
Gross margin improving
Gross margin was 44.1% over the last twelve months, against 41.6% a year earlier.
Past performance4/6
Return on equity under 15%
Return on equity was 22.4% over the last twelve months and averaged 8.0% over five years; we look for 15% on both.
Return on capital over 10%
Return on invested capital was 20.0%, above the 10% that usually covers the cost of capital.
Return on equity above the industry
Ciena's return on equity of 22.4% is above the Communications Equipment median of -3.7%.
Earnings shrank over 5 years
Net income shrank 19.3% a year on average over the last five fiscal years.
Net margin above its 5-year average
Net margin was 10.9% over the last twelve months, against a 5-year average of 5.7%.
Net margin above the industry
Ciena's net margin of 10.9% is above the Communications Equipment median of -2.2%.
Financial health4/6
High debt
Debt is 106% of shareholders' equity, above the 40% we consider low.
Debt rising against equity
Debt to equity rose from 27.2% five years ago to 106%.
Debt covered by cash flow
Operating cash flow over the last twelve months equals 32.7% of total debt.
Interest well covered
Operating income covers interest expense 10.6 times.
Short-term assets cover short-term debts
Current assets are 3.80 times current liabilities.
Low bankruptcy risk
The Altman Z-score is 6.29; above 3 is the safe zone and below 1.8 the distress zone.
Dividend0/6
No dividend
Ciena has not paid a dividend in the last twelve months.
Yield against Treasuries
No dividend.
Yield against the market
No dividend.
Dividend stability
No dividend.
Earnings cover
No dividend.
Cash-flow cover
No dividend.
Fair value
How we estimate itOur estimate per share
$137.56
The share price is 115% above this estimate.
| Method | Multiple used | Own 5Y median | Industry median | Value per share | Weight |
|---|---|---|---|---|---|
| P/E | 36.3× | 47.6× | 24.9× | $162.82 | 47% |
| EV/EBITDA | 25.9× | 31.7× | 20.0× | $130.66 | 41% |
| P/B | 2.8× | 3.1× | 2.5× | $60.61 | 12% |
| Earnings powerleft out, too far from the others | 12.4% cost of equity | – | – | $20.88 | – |
| Fair value | $137.56 | 100% | |||
Valuation over time
Using the earnings and balance sheet published at each date, not today's.
- P/E at month end
- Own 5-year median 47.6
- Communications Equipment median 24.9
An estimate from reported numbers and market multiples, not a price target or investment advice. It can be far off for companies whose profits are about to change sharply.
Market risk
From the past year of daily prices.
Liquidity
Low risk
- Average value traded per day
- $1.15B
- Value traded per 1% price move
- $218.17M
Downside
High risk
- Typical loss in a bad month
- 33.9%
- Volatility (annualized)
- 81%
- Sharpe ratio, 1 year
- 0.46
- Beta to the S&P 500 (5Y)
- 1.51
Typical bad-month loss, week by week
Margins
Share of revenue, fiscal years 2011 to 2025
Gross margin
Operating margin
Net margin
Growth rates
Compound annual growth to fiscal 2025
| Per year | 1 year | 3 years | 5 years | 10 years | Five-year pace |
|---|---|---|---|---|---|
| Revenue | +18.8% | +9.5% | +6.2% | +6.9% | |
| Gross profit | +16.6% | +8.7% | +3.9% | +6.4% | |
| Operating income | +18.6% | -3.9% | -16.5% | +7.0% | |
| Net income | +46.9% | -6.9% | -19.3% | +26.6% | |
| EPS, diluted | +46.6% | -5.3% | -18.2% | +23.9% | |
| Free cash flow | +76.1% | – | +10.1% | +12.8% |
Returns and balance sheet
10 fiscal years. Hover a measure to see how it is calculated.
| Measure | FY2016 | FY2020 | FY2025 | Trend |
|---|---|---|---|---|
| Return on equity | 10.5% | 15.4% | 4.4% | |
| Return on assets | 2.6% | 8.9% | 2.1% | |
| Current ratio | 2.26 | 3.43 | 2.73 | |
| Debt to equity | 1.33 | 0.27 | 0.56 | |
| Interest coverage | 2.8× | 15.5× | 2.2× | |
| Inventory turnover | 7.2× | 5.5× | 3.4× | |
| Capex to revenue | 4.1% | 2.3% | 3.0% | |
| Diluted shares | 151M | 156M | 145M |
Where the cash went
Fiscal 2021 to 2025, five years combined
Ciena generated $2.20B from operations and spent $1.98B on capital expenditure, dividends and share buybacks. 28% of that went back into the business.
DuPont analysis
Return on equity split into margin, efficiency and leverage
| Fiscal year | Net margin | Asset turnover | Equity multiplier | Return on equity |
|---|---|---|---|---|
| FY2025 | 2.6% | 0.83× | 2.07× | 4.4% |
| FY2024 | 2.1% | 0.71× | 1.98× | 3.0% |
| FY2023 | 5.8% | 0.82× | 1.92× | 9.2% |
| FY2022 | 4.2% | 0.73× | 1.73× | 5.3% |
| FY2021 | 13.8% | 0.80× | 1.64× | 18.1% |
| FY2020 | 10.2% | 0.87× | 1.72× | 15.4% |
| FY2019 | 7.1% | 0.93× | 1.86× | 12.4% |
| FY2018 | -11.1% | 0.80× | 1.90× | -17.0% |
| FY2017 | 45.0% | 0.82× | 2.35× | 87.0% |
| FY2016 | 2.8% | 0.93× | 4.01× | 10.5% |
Piotroski F-Score
Nine tests of profitability, balance sheet and efficiency, fiscal 2025 against fiscal 2024
- ProfitableNet income above zero$123.34M
- Cash generatingOperating cash flow above zero$806.09M
- Return on assets improvedROA up on the prior year1.5% → 2.2%
- Earnings backed by cashOperating cash flow above net income$806.09M vs $123.34M
- Less leverageLong-term debt to assets fell27.2% → 26.0%
- Better liquidityCurrent ratio rose3.54 → 2.73
- No dilutionShare count did not rise146M → 145M
- Gross margin improvedGross margin up on the prior year42.83% → 42.04%
- More efficientAsset turnover rose0.72 → 0.85
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