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Ciena Corp (CIEN) stock analysis

CIENNYSETelephone & Telegraph ApparatusFiscal year ends October 31
Financials through Q3 FY2026, quarter ended Aug 1, 2026Last filing: 10-Q on Sep 3, 2026Score 12/30115% above fair value
$296.04+23.94 (+8.80%)

Close on Nov 11, 2026Market cap $41.98BP/E 66.1Yield –

StockData Score

Prices as of Nov 11, 2026How the score works

Value0Growth4Performance4Health4Dividend0

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.

Scores of similar companies

Our estimate per share

$137.56

The share price is 115% above this estimate.

20%+ below
Near fair value
20%+ above
$296.04Price$137.56Fair value
MethodMultiple usedOwn 5Y medianIndustry medianValue per shareWeight
P/E36.3×47.6×24.9×$162.8247%
EV/EBITDA25.9×31.7×20.0×$130.6641%
P/B2.8×3.1×2.5×$60.6112%
Earnings powerleft out, too far from the others12.4% cost of equity––$20.88–
Fair value$137.56100%

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

25%: high

Margins

Share of revenue, fiscal years 2011 to 2025

Gross margin

42.0%−4.8 pts over 5 years

Operating margin

4.1%−9.6 pts over 5 years

Net margin

2.6%−7.6 pts over 5 years

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