CIEN vs SILC vs DGII Stock Comparison

Ciena, Silicom and Digi International Prices as of Oct 26, 2026 Peers: Industry group
CIEN Ciena Corp
$336.09 -5.8% 1M +87.7% 1Y
Market cap
$49.96B
P/E
76.4x
Revenue (TTM)
$6.02B
Div. yield
–
Networking Equipment Technology
6 wins
SILC Silicom Ltd.
$40.10 -24.0% 1M +133.3% 1Y
Market cap
$239.69M
P/E
–
Revenue (TTM)
$75.43M
Div. yield
–
Networking Equipment Technology
1 win
DGII Digi International Inc
$76.27 -2.6% 1M +96.5% 1Y
Market cap
$2.98B
P/E
61.1x
Revenue (TTM)
$506.21M
Div. yield
–
Networking Equipment Technology
4 wins

Head to Head

11 decided of 12

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

QuestionCIENSILCDGIILeader
Larger companyMarket capitalisation $49.96B $239.69M $2.98B CIEN
Cheaper on earningsLower P/E, profitable companies only 76.4x -24.5x 61.1x DGII
Cheaper on forward earningsLower price / next fiscal year consensus EPS 44.2x — 27.4x DGII
Faster revenue growthRevenue growth, trailing twelve months +32.6% +28.6% +20.3% CIEN
More profitableNet margin, trailing twelve months 10.9% -13.0% 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 +87.7% +133.3% +96.5% SILC
Better 5-year returnAnnualised price return, 5 years +44.4%/yr -1.4%/yr +29.8%/yr CIEN
Less volatileAnnualised volatility, 1 year 77.9% 90.3% 40.7% DGII
Higher overall scoreMean of the five percentile scores vs peers 55/100 36/100 60/100 DGII

Percentile Scorecard

CIENSILCDGII

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

AxisCIENSILCDGII
Valuation 19 #90 of 111 42 #65 of 111 46 #60 of 111
Growth 95 #6 of 108 22 #85 of 108 69 #34 of 108
Profitability 83 #19 of 104 18 #86 of 104 82 #20 of 104
Financial Health 43 #66 of 115 65 #41 of 115 50 #58 of 115
Shareholder Returns 34 #54 of 81 – 54 #38 of 81
Overall 55 36 60
  • CIEN ranked among 121 companies in Computer Hardware
  • SILC ranked among 121 companies in Computer Hardware
  • DGII ranked among 121 companies in Computer Hardware

Price Performance

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

Returns

PeriodCIENSILCDGIISPY
1 month -5.8%-24.0%-2.6% -0.8%
3 months -10.9%+1.8%+12.7% +3.5%
6 months -33.6%+38.8%+35.3% +7.0%
Year to date +43.7%+172.8%+76.2% +12.2%
1 year +87.7%+133.3%+96.5% +13.0%
3 years +719.3%+167.3%+201.8% +86.3%
3 years, per year +101.7%+38.8%+44.6% +23.1%
5 years +526.3%-6.6%+268.3% +68.6%
5 years, per year +44.4%-1.4%+29.8% +11.0%
10 years +1,548.3%-4.1%+602.9% +258.0%
10 years, per year +32.3%-0.4%+21.5% +13.6%

Risk

MeasureCIENSILCDGIISPY
Volatility, 1Y 77.9%90.3%40.7% 12.7%
Downside volatility, 1Y 82.8%79.5%38.8% 12.7%
Beta vs S&P 500, 1Y 2.783.001.43 1.00
Return / volatility, 1Y 1.131.482.37 1.02
Max drawdown, 5Y -49.7%-77.3%-48.6% -25.4%
From 52-week high -46.4%-35.0%-10.5% -1.8%
52-week high $627.00$61.65$85.24 $779.14
52-week low $176.45$13.50$35.40 $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.

MultipleCIENSILCDGII
P/E now vs peer median 73.0xmedian 32.0x -23.4xmedian 32.0x 59.1xmedian 32.0x
P/S now vs peer median 7.9xmedian 2.8x 3.0xmedian 2.8x 5.7xmedian 2.8x
EV/EBITDA now vs peer median 53.8xmedian 19.4x —median 19.4x 26.3xmedian 19.4x
P/FCF now vs peer median 58.6xmedian 29.0x —median 29.0x 21.3xmedian 29.0x
P/B now vs peer median 15.6xmedian 2.9x 2.0xmedian 2.9x 4.2xmedian 2.9x
PEG now vs peer median 1.63median 1.13 0.62median 1.13 3.72median 1.13

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 monthsCIENSILCDGII
Revenue $6.02B $75.43M $506.21M
Gross profit $2.65B $22.75M $323.07M
Operating income $738.95M -$10.69M $70.58M
Net income $654.41M -$9.79M $48.74M
Free cash flow $814.36M – $135.98M
R&D $924.94M $21.03M $73.84M
EPS (diluted) $4.48 $-1.72 $1.25
Cash & equivalents $2.45B $25.15M $27.97M
Total debt $3.23B – $108.13M
Shares (diluted) 145.97M 5.71M 38.92M
Enterprise value $43.52B $100.39M $2.87B

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
MetricCIENSILCDGII
P/E 73.0x -23.4x 59.1x
P/FCF 58.6x – 21.3x
P/Operating cash flow 45.2x – 20.9x
P/S 7.9x 3.0x 5.7x
P/B 15.6x 2.0x 4.2x
P/Tangible book 16.6x 2.1x 9.1x
EV/EBITDA 53.8x – 26.3x
EV/EBIT 65.3x -18.5x 42.1x
EV/Revenue 8.0x 2.6x 5.9x
EV/FCF 59.3x – 21.9x
EV/Operating cash flow 45.8x – 21.5x
PEG (3Y EPS CAGR) 1.63 0.62 3.72

Growth

14 metrics
MetricCIENSILCDGII
Revenue growth (1Y) 32.6% 28.6% 20.3%
Revenue CAGR (3Y) 12.5% -22.1% 4.9%
Gross profit growth (1Y) 40.6% 31.6% 23.4%
Gross profit CAGR (3Y) 13.3% -24.5% 9.3%
Operating income growth (1Y) 200.1% 18.2% 24.0%
Operating income CAGR (3Y) 29.1% -35.7% 9.7%
Net income growth (1Y) 364.5% 34.3% 14.2%
Net income CAGR (3Y) 43.5% -36.0% 18.0%
EPS growth (1Y) 359.9% 30.7% 10.5%
EPS CAGR (3Y) 44.8% -37.8% 15.9%
Operating cash flow growth (1Y) 34.5% – 30.1%
Operating cash flow CAGR (3Y) 201.2% – 59.2%
Free cash flow growth (1Y) 34.5% – 31.6%
Free cash flow CAGR (3Y) 95.4% – 60.8%

Profitability

14 metrics
MetricCIENSILCDGII
Gross margin 44.1% 30.2% 63.8%
EBITDA margin 14.9% – 22.3%
Operating margin 12.3% -14.2% 13.9%
Pretax margin 12.1% -12.3% 12.4%
Net margin 10.9% -13.0% 9.6%
FCF margin 13.5% – 26.9%
Operating cash flow margin 17.5% – 27.3%
Return on equity 22.0% -8.5% 7.2%
Return on assets 9.3% -6.1% 5.0%
Return on invested capital 12.4% – 6.9%
Return on capital employed 13.1% -8.9% 8.4%
Asset turnover 0.9x 0.5x 0.5x
Cash conversion (OCF / net income) 1.6x – 2.8x
Stock comp / revenue 3.5% – 3.4%

Financial Health

11 metrics
MetricCIENSILCDGII
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% 29.5% 29.0%
Equity / assets 38.2% 70.5% 71.0%
Interest coverage 10.6x – 8.9x
Current ratio 3.8x 3.1x 1.1x
Quick ratio 2.8x 1.3x 0.7x
Cash ratio 1.9x 0.8x 0.2x
Altman Z-score 6.99 4.50 7.48

Shareholder Returns

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

ConsensusCIENSILCDGII
Forward P/E 44.2xFY2026 – 27.4xFY2026
EPS, next fiscal year $7.60FY2026 $-0.43FY2026 $2.78FY2026
EPS growth, next FY +187.9%FY2026 – +32.4%FY2026
EPS growth, the year after +64.7% – +9.4%
Revenue, next fiscal year $6.86BFY2026 $91.18MFY2026 $519.66MFY2026
Revenue growth, next FY +43.8%FY2026 +47.2%FY2026 +20.8%FY2026
Revenue growth, the year after +18.0% +29.1% +3.8%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersCIENSILCDGII
Held by institutions 92.9% 43.1% 100.0%
Institutions holding 1,220 51 283
Change in shares held, QoQ -1.7% +42.4% +1.6%
Institutions buying 729 32 142
Institutions selling 379 12 105
Buyers to sellers 1.92 2.67 1.35

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.

CIENSILCDGII
CIEN 1.00 0.42 0.31
SILC 0.42 1.00 0.40
DGII 0.31 0.40 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, CIEN, SILC and DGII?

Ciena (CIEN) is the largest by market capitalisation: Ciena (CIEN) $49.96B, Silicom (SILC) $239.69M, Digi International (DGII) $2.98B.

Which stock is cheaper, CIEN, SILC and DGII?

Digi International (DGII) trades on the lowest price-to-earnings ratio (Ciena (CIEN) 76.4x, Silicom (SILC) -24.5x, Digi International (DGII) 61.1x). On next year's consensus earnings, Digi International (DGII) is cheapest (Ciena (CIEN) 44.2x, Digi International (DGII) 27.4x). 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%, Silicom (SILC) +28.6%, Digi International (DGII) +20.3%.

Which company is more profitable?

Ciena (CIEN) has the highest net margin (Ciena (CIEN) 10.9%, Silicom (SILC) -13.0%, 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 Silicom (SILC) returned the most: Ciena (CIEN) +87.7%, Silicom (SILC) +133.3%, Digi International (DGII) +96.5%. Over five years, Ciena (CIEN) compounded fastest (Ciena (CIEN) +44.4%/yr, Silicom (SILC) -1.4%/yr, Digi International (DGII) +29.8%/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%, Silicom (SILC) 90.3%, Digi International (DGII) 40.7%). Volatility measures how widely the price swings, not the risk of the business.

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

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.