Ciena Corp (CIEN) stock

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

$293.99−2.05 (-0.69%)

Close on Nov 12, 2026Market cap $41.69BP/E 65.6Yield –

Ciena statistics

106 measures from SEC filings and the closing price. Hover a name for the formula; the last column is the median of companies in the same industry group.

Important dates

Next earnings: Dec 10, 2026 (estimated, before the open)
Last ex-dividend date: No dividends
Fundamentals through: Aug 1, 2026
Share price as of: Nov 12, 2026

Valuation ratiosIndustry

Market Cap: $41.69B; $844.71M
Enterprise Value: $42.29B; $944.99M
PE Ratio: 65.62; 34.12
PS Ratio: 6.92; 2.98
PB Ratio: 13.64; 2.83
P/TBV Ratio: 17.71; 3.58
P/FCF Ratio: 51.19; 34.64
P/OCF Ratio: 39.53; 23.41

Enterprise valuationIndustry

EV / Sales: 7.02; 2.44
EV / EBITDA: 57.23; 20.42
EV / EBIT: 57.23; 26.07
EV / FCF: 51.93; 31.79

Share statisticsIndustry

Shares Outstanding: 142M; 50M
Shares Change (YoY): 0.29%; 2.33%
Shares Change (QoQ): 0.21%; 0.21%
Float: 140M; 50M
Shares Held by Insiders: 1.18%; 5.32%
Shares Held by Institutions: 93.3%; 61.6%

Short sellingIndustry

Short Interest: 4M; –
Short Interest Change: -2.00%; -0.74%
Short % of Float: 2.79%; 6.78%
Short % of Shares Outstanding: 2.75%; 5.10%
Days to Cover: 1.37; 3.58

Stock price statisticsIndustry

52-Week High: $637.51; –
52-Week Low: $168.22; –
20-Day Moving Average: $310.30; –
50-Day Moving Average: $343.99; –
200-Day Moving Average: $406.50; –
Average True Range (14): $27.60; –
Price Change (1 Week): 27.4%; 8.87%
Price Change (1 Month): -18.2%; -9.03%
Price Change (3 Months): -31.4%; -25.0%
Price Change (6 Months): -50.3%; -34.6%
Price Change (YTD): 25.7%; 1.08%
Price Change (1 Year): 41.7%; -0.41%
Price Change (3 Years): 569.7%; 27.4%
Price Change (5 Years): 378.7%; -28.5%
Price Change (10 Years): 1252.3%; 111.7%
Average Volume (10 Days): 4M; –
Average Volume (20 Days): 3M; –
Average Volume (90 Days): 3M; –
Relative Volume: 0.82; 0.80
Relative Strength Index (14): 44.9; 44.5
Volatility (1 Year): 81.1%; 82.1%
Beta (5 Years): 1.51; 1.39

MarginsIndustry

Gross Margin: 44.1%; 34.6%
Operating Margin: 12.3%; 0.77%
Pretax Margin: 12.1%; 2.97%
Profit Margin: 10.9%; -0.51%
EBITDA Margin: 12.3%; 4.94%
FCF Margin: 13.5%; 2.73%

Returns on capitalIndustry

Return on Equity (ROE): 22.4%; -0.17%
Return on Assets (ROA): 9.52%; -1.58%
Return on Invested Capital (ROIC): 20.0%; 1.66%
Return on Capital Employed (ROCE): 11.2%; 0.42%

Financial positionIndustry

Current Ratio: 3.80; 2.38
Quick Ratio: 2.79; 1.32
Debt / Equity: 1.06; 0.38
Debt / EBITDA: 4.37; 2.03
Debt / FCF: 3.97; 2.32
Net Debt / EBITDA: 0.81; 0.66
Interest Coverage: 10.56; 0.05

GrowthIndustry

Revenue Growth (YoY): 32.6%; 13.8%
Net Income Growth (YoY): 364.5%; 14.8%
EPS Growth (YoY): 361.9%; 19.7%
FCF Growth (YoY): 34.5%; 12.6%
Revenue Growth (3Y CAGR): 9.50%; 1.79%
Revenue Growth (5Y CAGR): 6.19%; 7.18%
EPS Growth (3Y CAGR): -5.27%; 5.05%
EPS Growth (5Y CAGR): -18.2%; 10.6%

EfficiencyIndustry

Asset Turnover: 0.88; 0.66
Inventory Turnover: 3.89; 3.04
Revenue Per Employee: $663.09K; $373.11K
Profits Per Employee: $72.07K; -$6.97K
Employee Count: 9,080; 534
WACC: 11.9%; 11.3%

Income statement (TTM)Industry

Revenue: $6.02B; $338.73M
Gross Profit: $2.65B; $99.67M
Operating Income: $738.95M; -$314.66K
Pretax Income: $725.65M; $831.50K
Net Income: $654.41M; -$1.22M
EBITDA: $738.95M; $2.84M
EPS (Diluted): $4.48; -$0.01

Balance sheetIndustry

Cash & Short-Term Investments: $2.63B; $93.38M
Total Debt: $3.23B; $196.00M
Net Cash (Debt): -$599.84M; $7.36M
Net Cash Per Share: -$4.23; $0.30
Equity (Book Value): $3.06B; $200.69M
Book Value Per Share: $21.56; $5.54
Tangible Book Value: $2.35B; $63.99M
Working Capital: $3.88B; $143.99M

Cash flow (TTM)Industry

Operating Cash Flow: $1.05B; $3.17M
Capital Expenditures: -$240.32M; -$18.11M
Free Cash Flow: $814.36M; $4.22M
FCF Per Share: $5.74; $0.21

Dividends and yieldsIndustry

Earnings Yield: 1.57%; -0.24%
FCF Yield: 1.95%; 0.82%
Buyback Yield: 0.92%; 0.45%
Shareholder Yield: 0.92%; 0.92%

Taxes and interestIndustry

Interest Expense: $69.96M; $9.10M
Income Tax: $71.24M; $3.09M
Effective Tax Rate: 9.82%; 18.5%

Scores and fair valueIndustry

Graham Number: $46.61; $33.09
Graham Upside: -84.1%; -60.9%
Altman Z-Score: 6.26; 2.80
Piotroski F-Score: 7; 5

Total return vs. the S&P 500

Price change plus reinvested dividends, to the close on Nov 12, 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	-27.4%	-2.7%	−24.7 pts
3 months	-32.0%	-1.7%	−30.2 pts
Year to date	+25.7%	+11.9%	+13.8 pts
1 year	+40.3%	+12.0%	+28.3 pts
3 years	+566.2%	+78.2%	+488.0 pts	+88.2%	+21.2%
5 years	+378.7%	+73.2%	+305.5 pts	+36.8%	+11.6%
10 years	+1252.3%	+309.6%	+942.7 pts	+29.7%	+15.1%

Short interest

Shares sold short and not yet covered, reported by brokers to FINRA twice a month. Latest settlement date Oct 30, 2026.

4M CIEN shares were sold short on Oct 30, 2026, down 2.0% from the previous report, or 2.79% of the shares available to trade. At recent volumes it would take 1.4 days to buy them back. Over the last 20 sessions, 44.2% of the volume reported to FINRA was short selling.

Settlement date	Shares short	Change	Avg. daily volume	Days to cover
Oct 30, 2026	3,905,235	-2.0%	2,850,815	1.4
Oct 15, 2026	3,984,850	+3.0%	3,426,823	1.2
Sep 30, 2026	3,868,972	+7.7%	2,681,505	1.4
Sep 15, 2026	3,590,902	+7.3%	3,059,545	1.2
Aug 31, 2026	3,345,857	+14.5%	1,684,576	2.0
Aug 14, 2026	2,921,400	-21.3%	2,130,578	1.4
Jul 31, 2026	3,711,106	-7.1%	2,296,038	1.6
Jul 15, 2026	3,993,188	+3.6%	1,662,231	2.4
Jun 30, 2026	3,853,439	-19.1%	4,068,949	1.0
Jun 15, 2026	4,760,443	+5.7%	4,279,264	1.1
May 29, 2026	4,505,490	-0.5%	2,093,785	2.1
May 15, 2026	4,529,072	+3.8%	1,878,224	2.4