DGII vs CIEN vs EXTR Stock Comparison

Digi International, Ciena and Extreme Networks Prices as of Oct 29, 2026 Peers: Industry group
DGII Digi International Inc
$77.63 +1.5% 1M +103.5% 1Y
Market cap
$2.72B
P/E
55.9x
Revenue (TTM)
$506.21M
Div. yield
–
Networking Equipment Technology
3 wins
CIEN Ciena Corp
$349.15 -1.6% 1M +84.5% 1Y
Market cap
$44.88B
P/E
68.6x
Revenue (TTM)
$6.02B
Div. yield
–
Networking Equipment Technology
4 wins
EXTR Extreme Networks Inc
$23.59 +12.0% 1M +31.0% 1Y
Market cap
$2.91B
P/E
55.4x
Revenue (TTM)
$1.31B
Div. yield
–
Networking Equipment Technology
4 wins

Head to Head

11 decided of 12

Ciena leads on 4 of the 12 questions below (Ciena 4, Extreme Networks 4, Digi International 3). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionDGIICIENEXTRLeader
Larger companyMarket capitalisation $2.72B $44.88B $2.91B CIEN
Cheaper on earningsLower P/E, profitable companies only 55.9x 68.6x 55.4x EXTR
Cheaper on forward earningsLower price / next fiscal year consensus EPS 27.9x 45.9x 17.1x EXTR
Faster revenue growthRevenue growth, trailing twelve months +20.3% +32.6% +11.3% CIEN
More profitableNet margin, trailing twelve months 9.6% 10.9% 4.0% CIEN
Better return on capitalReturn on invested capital 6.9% 12.4% 23.5% EXTR
Less leveragedLower net debt / EBITDA 0.7x 0.7x -0.4x EXTR
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months +103.5% +84.5% +31.0% DGII
Better 5-year returnAnnualised price return, 5 years +29.2%/yr +45.1%/yr +19.1%/yr CIEN
Less volatileAnnualised volatility, 1 year 40.8% 77.9% 53.1% DGII
Higher overall scoreMean of the five percentile scores vs peers 59/100 55/100 59/100 DGII

Percentile Scorecard

DGIICIENEXTR

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

AxisDGIICIENEXTR
Valuation 42 #65 of 112 21 #89 of 112 53 #53 of 112
Growth 70 #33 of 108 94 #7 of 108 51 #54 of 108
Profitability 82 #20 of 104 84 #18 of 104 76 #26 of 104
Financial Health 48 #61 of 116 41 #69 of 116 24 #89 of 116
Shareholder Returns 53 #37 of 78 36 #50 of 78 90 #9 of 78
Overall 59 55 59
  • DGII ranked among 121 companies in Computer Hardware
  • CIEN 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

PeriodDGIICIENEXTRSPY
1 month +1.5%-1.6%+12.0% +0.7%
3 months +13.8%-6.1%-20.9% +3.7%
6 months +38.5%-33.8%+6.8% +7.1%
Year to date +79.3%+49.3%+41.7% +12.8%
1 year +103.5%+84.5%+31.0% +11.9%
3 years +206.2%+750.3%+19.0% +85.2%
3 years, per year +45.3%+104.2%+6.0% +22.8%
5 years +260.2%+543.1%+140.0% +67.6%
5 years, per year +29.2%+45.1%+19.1% +10.9%
10 years +700.3%+1,689.6%+482.5% +262.0%
10 years, per year +23.1%+33.4%+19.3% +13.7%

Risk

MeasureDGIICIENEXTRSPY
Volatility, 1Y 40.8%77.9%53.1% 12.7%
Downside volatility, 1Y 38.6%82.7%51.4% 12.6%
Beta vs S&P 500, 1Y 1.432.801.57 1.00
Return / volatility, 1Y 2.541.080.58 0.94
Max drawdown, 5Y -48.6%-49.7%-67.2% -25.4%
From 52-week high -8.9%-44.3%-30.0% -1.2%
52-week high $85.24$627.00$33.71 $779.14
52-week low $35.40$176.45$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.

MultipleDGIICIENEXTR
P/E now vs peer median 60.2xmedian 32.9x 75.8xmedian 32.9x 59.1xmedian 32.9x
P/S now vs peer median 5.8xmedian 2.9x 8.2xmedian 2.9x 2.4xmedian 2.9x
EV/EBITDA now vs peer median 26.8xmedian 20.0x 55.9xmedian 20.0x 30.7xmedian 20.0x
P/FCF now vs peer median 21.7xmedian 30.2x 60.8xmedian 30.2x 20.2xmedian 30.2x
P/B now vs peer median 4.3xmedian 2.9x 16.2xmedian 2.9x 35.4xmedian 2.9x
PEG now vs peer median 3.79median 1.08 1.69median 1.08 -3.29median 1.08

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 monthsDGIICIENEXTR
Revenue $506.21M $6.02B $1.31B
Gross profit $323.07M $2.65B $813.05M
Operating income $70.58M $738.95M $74.49M
Net income $48.74M $654.41M $52.49M
Free cash flow $135.98M $814.36M $154.76M
R&D $73.84M $924.94M $233.95M
EPS (diluted) $1.25 $4.48 $0.39
Cash & equivalents $27.97M $2.45B $244.52M
Total debt $108.13M $3.23B $200.00M
Shares (diluted) 38.92M 145.97M 134.68M
Enterprise value $2.61B $38.44B $2.02B

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
MetricDGIICIENEXTR
P/E 60.2x 75.8x 59.1x
P/FCF 21.7x 60.8x 20.2x
P/Operating cash flow 21.3x 47.0x 17.1x
P/S 5.8x 8.2x 2.4x
P/B 4.3x 16.2x 35.4x
P/Tangible book 9.2x 17.3x 36.5x
EV/EBITDA 26.8x 55.9x 30.7x
EV/EBIT 42.9x 67.9x 41.3x
EV/Revenue 6.0x 8.3x 2.3x
EV/FCF 22.3x 61.6x 19.9x
EV/Operating cash flow 21.9x 47.5x 16.8x
PEG (3Y EPS CAGR) 3.79 1.69 -3.29

Growth

14 metrics
MetricDGIICIENEXTR
Revenue growth (1Y) 20.3% 32.6% 11.3%
Revenue CAGR (3Y) 4.9% 12.5% -1.3%
Gross profit growth (1Y) 23.4% 40.6% 11.7%
Gross profit CAGR (3Y) 9.3% 13.3% 0.5%
Operating income growth (1Y) 24.0% 200.1% 126.0%
Operating income CAGR (3Y) 9.7% 29.1% -16.3%
Net income growth (1Y) 14.2% 364.5% 506.9%
Net income CAGR (3Y) 18.0% 43.5% -17.7%
EPS growth (1Y) 10.5% 359.9% 508.7%
EPS CAGR (3Y) 15.9% 44.8% -18.0%
Operating cash flow growth (1Y) 30.1% 34.5% 52.9%
Operating cash flow CAGR (3Y) 59.2% 201.2% -12.8%
Free cash flow growth (1Y) 31.6% 34.5% 63.2%
Free cash flow CAGR (3Y) 60.8% 95.4% -15.9%

Profitability

14 metrics
MetricDGIICIENEXTR
Gross margin 63.8% 44.1% 61.9%
EBITDA margin 22.3% 14.9% 7.6%
Operating margin 13.9% 12.3% 5.7%
Pretax margin 12.4% 12.1% 4.7%
Net margin 9.6% 10.9% 4.0%
FCF margin 26.9% 13.5% 11.8%
Operating cash flow margin 27.3% 17.5% 13.9%
Return on equity 7.2% 22.0% 59.4%
Return on assets 5.0% 9.3% 4.2%
Return on invested capital 6.9% 12.4% 23.5%
Return on capital employed 8.4% 13.1% 12.8%
Asset turnover 0.5x 0.9x 1.1x
Cash conversion (OCF / net income) 2.8x 1.6x 3.5x
Stock comp / revenue 3.4% 3.5% 6.7%

Financial Health

11 metrics
MetricDGIICIENEXTR
Debt / assets 11.2% 40.4% 15.4%
Debt / equity 0.2x 1.1x 2.3x
Net debt / EBITDA 0.7x 0.7x -0.4x
Debt / FCF 0.8x 4.0x 1.3x
Liabilities / assets 29.0% 61.8% 93.2%
Equity / assets 71.0% 38.2% 6.8%
Interest coverage 8.9x 10.6x 4.9x
Current ratio 1.1x 3.8x 1.0x
Quick ratio 0.7x 2.8x 0.6x
Cash ratio 0.2x 1.9x 0.4x
Altman Z-score 7.59 7.21 1.79

Shareholder Returns

7 metrics
MetricDGIICIENEXTR
Dividend yield – – –
Net buyback yield 0.0% -1.0% 3.2%
Shareholder yield 0.0% -1.0% 3.2%
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.

ConsensusDGIICIENEXTR
Forward P/E 27.9xFY2026 45.9xFY2026 17.1xFY2027
EPS, next fiscal year $2.78FY2026 $7.60FY2026 $1.38FY2027
EPS growth, next FY +32.4%FY2026 +187.9%FY2026 +30.2%FY2027
EPS growth, the year after +9.4% +64.7% +2.9%
Revenue, next fiscal year $519.66MFY2026 $6.86BFY2026 $1.34BFY2027
Revenue growth, next FY +20.8%FY2026 +43.8%FY2026 +4.5%FY2027
Revenue growth, the year after +3.8% +18.0% +21.3%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersDGIICIENEXTR
Held by institutions 100.0% 92.9% 96.7%
Institutions holding 284 1,221 338
Change in shares held, QoQ +1.6% -1.7% +1.2%
Institutions buying 143 730 181
Institutions selling 105 379 121
Buyers to sellers 1.36 1.93 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.

DGIICIENEXTR
DGII 1.00 0.32 0.29
CIEN 0.32 1.00 0.32
EXTR 0.29 0.32 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, DGII, CIEN and EXTR?

Ciena (CIEN) is the largest by market capitalisation: Digi International (DGII) $2.72B, Ciena (CIEN) $44.88B, Extreme Networks (EXTR) $2.91B.

Which stock is cheaper, DGII, CIEN and EXTR?

Extreme Networks (EXTR) trades on the lowest price-to-earnings ratio (Digi International (DGII) 55.9x, Ciena (CIEN) 68.6x, Extreme Networks (EXTR) 55.4x). On next year's consensus earnings, Extreme Networks (EXTR) is cheapest (Digi International (DGII) 27.9x, Ciena (CIEN) 45.9x, Extreme Networks (EXTR) 17.1x). 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: Digi International (DGII) +20.3%, Ciena (CIEN) +32.6%, Extreme Networks (EXTR) +11.3%.

Which company is more profitable?

Ciena (CIEN) has the highest net margin (Digi International (DGII) 9.6%, Ciena (CIEN) 10.9%, Extreme Networks (EXTR) 4.0%). On return on invested capital, Extreme Networks (EXTR) leads (Digi International (DGII) 6.9%, Ciena (CIEN) 12.4%, Extreme Networks (EXTR) 23.5%).

Which stock has performed better?

Over the past year Digi International (DGII) returned the most: Digi International (DGII) +103.5%, Ciena (CIEN) +84.5%, Extreme Networks (EXTR) +31.0%. Over five years, Ciena (CIEN) compounded fastest (Digi International (DGII) +29.2%/yr, Ciena (CIEN) +45.1%/yr, Extreme Networks (EXTR) +19.1%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Digi International (DGII) has been the steadiest (Digi International (DGII) 40.8%, Ciena (CIEN) 77.9%, Extreme Networks (EXTR) 53.1%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, DGII, CIEN 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 4. 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.