CIEN vs DGII vs EXTR Stock Comparison

Ciena, Digi International and Extreme Networks Prices as of Oct 28, 2026 Peers: Industry group
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CIEN Ciena Corp
$363.26 +5.6% 1M +98.5% 1Y
Market cap
$50.74B
P/E
77.5x
Revenue (TTM)
$6.02B
Div. yield
–
Networking Equipment Technology
6 wins
DGII Digi International Inc
$78.28 +0.1% 1M +102.4% 1Y
Market cap
$2.98B
P/E
61.1x
Revenue (TTM)
$506.21M
Div. yield
–
Networking Equipment Technology
4 wins
EXTR Extreme Networks Inc
$24.44 +16.4% 1M +14.9% 1Y
Market cap
$3.22B
P/E
61.3x
Revenue (TTM)
$1.31B
Div. yield
–
Networking Equipment Technology
1 win

Head to Head

11 decided of 12

Ciena leads on 6 of the 12 questions below (Ciena 6, Digi International 4, Extreme Networks 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionCIENDGIIEXTRLeader
Larger companyMarket capitalisation $50.74B $2.98B $3.22B CIEN
Cheaper on earningsLower P/E, profitable companies only 77.5x 61.1x 61.3x DGII
Cheaper on forward earningsLower price / next fiscal year consensus EPS 47.8x 28.2x 17.7x EXTR
Faster revenue growthRevenue growth, trailing twelve months +32.6% +20.3% +11.3% CIEN
More profitableNet margin, trailing twelve months 10.9% 9.6% — CIEN
Better return on capitalReturn on invested capital 12.4% 6.9% — CIEN
Less leveragedLower net debt / EBITDA 0.7x 0.7x — CIEN
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months +98.5% +102.4% +14.9% DGII
Better 5-year returnAnnualised price return, 5 years +46.3%/yr +29.5%/yr +20.0%/yr CIEN
Less volatileAnnualised volatility, 1 year 77.9% 40.8% 55.6% DGII
Higher overall scoreMean of the five percentile scores vs peers 56/100 60/100 58/100 DGII

Percentile Scorecard

CIENDGIIEXTR

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisCIENDGIIEXTR
Valuation 21 #88 of 111 45 #62 of 111 44 #63 of 111
Growth 94 #7 of 108 70 #33 of 108 53 #51 of 108
Profitability 84 #18 of 104 82 #20 of 104 76 #26 of 104
Financial Health 43 #66 of 115 49 #59 of 115 –
Shareholder Returns 36 #50 of 78 57 #34 of 78 –
Overall 56 60 58
  • CIEN ranked among 121 companies in Computer Hardware
  • DGII ranked among 121 companies in Computer Hardware
  • EXTR ranked among 121 companies in Computer Hardware

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodCIENDGIIEXTRSPY
1 month +5.6%+0.1%+16.4% +0.9%
3 months +9.9%+19.5%-15.9% +5.9%
6 months -23.6%+43.2%+11.9% +8.5%
Year to date +55.3%+80.8%+46.8% +13.3%
1 year +98.5%+102.4%+14.9% +12.4%
3 years +785.6%+209.8%+19.0% +88.1%
3 years, per year +107.0%+45.8%+6.0% +23.5%
5 years +569.1%+263.2%+148.6% +68.2%
5 years, per year +46.3%+29.5%+20.0% +11.0%
10 years +1,761.9%+707.0%+503.5% +263.4%
10 years, per year +34.0%+23.2%+19.7% +13.8%

Risk

MeasureCIENDGIIEXTRSPY
Volatility, 1Y 77.9%40.8%55.6% 12.7%
Downside volatility, 1Y 82.8%38.7%56.6% 12.7%
Beta vs S&P 500, 1Y 2.791.431.56 1.00
Return / volatility, 1Y 1.262.510.27 0.98
Max drawdown, 5Y -49.7%-48.6%-67.2% -25.4%
From 52-week high -42.1%-8.2%-27.5% -0.9%
52-week high $627.00$85.24$33.71 $779.14
52-week low $176.45$35.40$13.74 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleCIENDGIIEXTR
P/E now vs peer median 78.9xmedian 33.5x 60.7xmedian 33.5x 61.8xmedian 33.5x
P/S now vs peer median 8.6xmedian 2.8x 5.9xmedian 2.8x 2.4xmedian 2.8x
EV/EBITDA now vs peer median 58.1xmedian 19.6x 27.0xmedian 19.6x —median 19.6x
P/FCF now vs peer median 63.3xmedian 29.8x 21.8xmedian 29.8x 29.0xmedian 29.8x
P/B now vs peer median 16.9xmedian 2.9x 4.3xmedian 2.9x 36.5xmedian 2.9x
PEG now vs peer median 1.76median 1.10 3.82median 1.10 -3.43median 1.10

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsCIENDGIIEXTR
Revenue $6.02B $506.21M $1.31B
Gross profit $2.65B $323.07M –
Operating income $738.95M $70.58M $74.49M
Net income $654.41M $48.74M $52.49M
Free cash flow $814.36M $135.98M –
R&D $924.94M $73.84M $233.95M
EPS (diluted) $4.48 $1.25 $0.39
Cash & equivalents $2.45B $27.97M $244.52M
Total debt $3.23B $108.13M –
Shares (diluted) 145.97M 38.92M 134.97M
Enterprise value $44.30B $2.87B $3.22B

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricCIENDGIIEXTR
P/E 78.9x 60.7x 61.8x
P/FCF 63.3x 21.8x 29.0x
P/Operating cash flow 48.9x 21.5x 17.6x
P/S 8.6x 5.9x 2.4x
P/B 16.9x 4.3x 36.5x
P/Tangible book 18.0x 9.3x 37.5x
EV/EBITDA 58.1x 27.0x –
EV/EBIT 70.6x 43.2x –
EV/Revenue 8.7x 6.0x 2.4x
EV/FCF 64.0x 22.4x –
EV/Operating cash flow 49.4x 22.0x 17.6x
PEG (3Y EPS CAGR) 1.76 3.82 -3.43

Growth

14 metrics
MetricCIENDGIIEXTR
Revenue growth (1Y) 32.6% 20.3% 11.3%
Revenue CAGR (3Y) 12.5% 4.9% -1.3%
Gross profit growth (1Y) 40.6% 23.4% –
Gross profit CAGR (3Y) 13.3% 9.3% –
Operating income growth (1Y) 200.1% 24.0% 126.0%
Operating income CAGR (3Y) 29.1% 9.7% -16.3%
Net income growth (1Y) 364.5% 14.2% 506.9%
Net income CAGR (3Y) 43.5% 18.0% -17.7%
EPS growth (1Y) 359.9% 10.5% 507.4%
EPS CAGR (3Y) 44.8% 15.9% -18.0%
Operating cash flow growth (1Y) 34.5% 30.1% 52.9%
Operating cash flow CAGR (3Y) 201.2% 59.2% -12.8%
Free cash flow growth (1Y) 34.5% 31.6% –
Free cash flow CAGR (3Y) 95.4% 60.8% –

Profitability

14 metrics
MetricCIENDGIIEXTR
Gross margin 44.1% 63.8% –
EBITDA margin 14.9% 22.3% –
Operating margin 12.3% 13.9% –
Pretax margin 12.1% 12.4% –
Net margin 10.9% 9.6% –
FCF margin 13.5% 26.9% –
Operating cash flow margin 17.5% 27.3% 13.9%
Return on equity 22.0% 7.2% 59.5%
Return on assets 9.3% 5.0% 4.2%
Return on invested capital 12.4% 6.9% –
Return on capital employed 13.1% 8.4% –
Asset turnover 0.9x 0.5x 1.1x
Cash conversion (OCF / net income) 1.6x 2.8x 3.5x
Stock comp / revenue 3.5% 3.4% 6.7%

Financial Health

11 metrics
MetricCIENDGIIEXTR
Debt / assets 40.4% 11.2% –
Debt / equity 1.1x 0.2x –
Net debt / EBITDA 0.7x 0.7x –
Debt / FCF 4.0x 0.8x –
Liabilities / assets 61.8% 29.0% –
Equity / assets 38.2% 71.0% 6.8%
Interest coverage 10.6x 8.9x –
Current ratio 3.8x 1.1x 1.0x
Quick ratio 2.8x 0.7x –
Cash ratio 1.9x 0.2x –
Altman Z-score 7.46 7.65 –

Shareholder Returns

7 metrics
MetricCIENDGIIEXTR
Dividend yield – – –
Net buyback yield -0.9% 0.0% –
Shareholder yield -0.9% 0.0% –
Payout ratio (earnings) – – –
Payout ratio (FCF) – – –
Dividend growth (1Y) – – –
Dividend CAGR (3Y) – – –

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusCIENDGIIEXTR
Forward P/E 47.8xFY2026 28.2xFY2026 17.7xFY2027
EPS, next fiscal year $7.60FY2026 $2.78FY2026 $1.38FY2027
EPS growth, next FY +187.9%FY2026 +32.4%FY2026 +30.2%FY2027
EPS growth, the year after +64.7% +9.4% +2.9%
Revenue, next fiscal year $6.86BFY2026 $519.66MFY2026 $1.34BFY2027
Revenue growth, next FY +43.8%FY2026 +20.8%FY2026 +4.5%FY2027
Revenue growth, the year after +18.0% +3.8% +21.3%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersCIENDGIIEXTR
Held by institutions 92.9% 100.0% 96.7%
Institutions holding 1,220 283 338
Change in shares held, QoQ -1.7% +1.6% +1.2%
Institutions buying 729 142 181
Institutions selling 379 105 121
Buyers to sellers 1.92 1.35 1.50

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

CIENDGIIEXTR
CIEN 1.00 0.32 0.31
DGII 0.32 1.00 0.28
EXTR 0.31 0.28 1.00

Add a Peer

Largest companies in the same industry

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Frequently Asked Questions

Which is bigger, CIEN, DGII and EXTR?

Ciena (CIEN) is the largest by market capitalisation: Ciena (CIEN) $50.74B, Digi International (DGII) $2.98B, Extreme Networks (EXTR) $3.22B.

Which stock is cheaper, CIEN, DGII and EXTR?

Digi International (DGII) trades on the lowest price-to-earnings ratio (Ciena (CIEN) 77.5x, Digi International (DGII) 61.1x, Extreme Networks (EXTR) 61.3x). On next year's consensus earnings, Extreme Networks (EXTR) is cheapest (Ciena (CIEN) 47.8x, Digi International (DGII) 28.2x, Extreme Networks (EXTR) 17.7x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Ciena (CIEN) grew revenue fastest over the trailing twelve months: Ciena (CIEN) +32.6%, Digi International (DGII) +20.3%, Extreme Networks (EXTR) +11.3%.

Which company is more profitable?

Ciena (CIEN) has the highest net margin (Ciena (CIEN) 10.9%, Digi International (DGII) 9.6%). On return on invested capital, Ciena (CIEN) leads (Ciena (CIEN) 12.4%, Digi International (DGII) 6.9%).

Which stock has performed better?

Over the past year Digi International (DGII) returned the most: Ciena (CIEN) +98.5%, Digi International (DGII) +102.4%, Extreme Networks (EXTR) +14.9%. Over five years, Ciena (CIEN) compounded fastest (Ciena (CIEN) +46.3%/yr, Digi International (DGII) +29.5%/yr, Extreme Networks (EXTR) +20.0%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Digi International (DGII) has been the steadiest (Ciena (CIEN) 77.9%, Digi International (DGII) 40.8%, Extreme Networks (EXTR) 55.6%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, CIEN, DGII and EXTR?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Ciena (CIEN) leads on 6. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.