CALX vs EXTR vs ATEN Stock Comparison

Calix, Extreme Networks and A10 Networks Prices as of Oct 29, 2026 Peers: Industry group
CALX Calix, Inc
$38.31 +14.3% 1M -38.4% 1Y
Market cap
$2.33B
P/E
45.6x
Revenue (TTM)
$1.11B
Div. yield
–
Networking Equipment Technology
2 wins
EXTR Extreme Networks Inc
$23.59 +12.0% 1M +31.0% 1Y
Market cap
$2.96B
P/E
56.4x
Revenue (TTM)
$1.31B
Div. yield
–
Networking Equipment Technology
4 wins
ATEN A10 Networks, Inc.
$25.83 +0.0% 1M +47.7% 1Y
Market cap
$1.77B
P/E
41.1x
Revenue (TTM)
$310.17M
Div. yield
–
Networking Equipment Technology
5 wins

Head to Head

11 decided of 12

A10 Networks leads on 5 of the 12 questions below (A10 Networks 5, Extreme Networks 4, Calix 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionCALXEXTRATENLeader
Larger companyMarket capitalisation $2.33B $2.96B $1.77B EXTR
Cheaper on earningsLower P/E, profitable companies only 45.6x 56.4x 41.1x ATEN
Cheaper on forward earningsLower price / next fiscal year consensus EPS 23.6x 17.1x 25.8x EXTR
Faster revenue growthRevenue growth, trailing twelve months +27.8% +11.3% +12.2% CALX
More profitableNet margin, trailing twelve months 4.6% 4.0% 13.9% ATEN
Better return on capitalReturn on invested capital — 23.5% 8.9% EXTR
Less leveragedLower net debt / EBITDA — -0.4x -2.1x ATEN
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -38.4% +31.0% +47.7% ATEN
Better 5-year returnAnnualised price return, 5 years -9.4%/yr +19.1%/yr +6.7%/yr EXTR
Less volatileAnnualised volatility, 1 year 41.6% 53.1% 39.8% ATEN
Higher overall scoreMean of the five percentile scores vs peers 76/100 59/100 51/100 CALX

Percentile Scorecard

CALXEXTRATEN

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

AxisCALXEXTRATEN
Valuation 60 #46 of 112 53 #53 of 112 44 #63 of 112
Growth 82 #20 of 108 51 #54 of 108 28 #78 of 108
Profitability 64 #38 of 104 76 #26 of 104 85 #16 of 104
Financial Health 77 #28 of 116 24 #89 of 116 32 #79 of 116
Shareholder Returns 97 #3 of 78 90 #9 of 78 66 #27 of 78
Overall 76 59 51
  • CALX ranked among 121 companies in Computer Hardware
  • EXTR ranked among 121 companies in Computer Hardware
  • ATEN ranked among 121 companies in Computer Hardware

Price Performance

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

Returns

PeriodCALXEXTRATENSPY
1 month +14.3%+12.0%+0.0% +0.7%
3 months +8.9%-20.9%-13.7% +3.7%
6 months -12.1%+6.8%-3.2% +7.1%
Year to date -27.6%+41.7%+46.0% +12.8%
1 year -38.4%+31.0%+47.7% +11.9%
3 years +16.2%+19.0%+139.2% +85.2%
3 years, per year +5.1%+6.0%+33.8% +22.8%
5 years -38.8%+140.0%+38.2% +67.6%
5 years, per year -9.4%+19.1%+6.7% +10.9%
10 years +498.6%+482.5%+245.8% +262.0%
10 years, per year +19.6%+19.3%+13.2% +13.7%

Risk

MeasureCALXEXTRATENSPY
Volatility, 1Y 41.6%53.1%39.8% 12.7%
Downside volatility, 1Y 43.8%51.4%42.6% 12.6%
Beta vs S&P 500, 1Y 0.881.571.08 1.00
Return / volatility, 1Y -0.920.581.20 0.94
Max drawdown, 5Y -65.3%-67.2%-44.6% -25.4%
From 52-week high -44.0%-30.0%-32.3% -1.2%
52-week high $68.42$33.71$38.14 $779.14
52-week low $33.15$13.74$16.55 $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.

MultipleCALXEXTRATEN
P/E now vs peer median 47.5xmedian 32.9x 59.1xmedian 32.9x 43.4xmedian 32.9x
P/S now vs peer median 2.2xmedian 2.9x 2.4xmedian 2.9x 6.0xmedian 2.9x
EV/EBITDA now vs peer median 28.0xmedian 20.0x 30.7xmedian 20.0x 26.2xmedian 20.0x
P/FCF now vs peer median 28.2xmedian 30.2x 20.2xmedian 30.2x 30.7xmedian 30.2x
P/B now vs peer median 3.4xmedian 2.9x 35.4xmedian 2.9x 7.9xmedian 2.9x
PEG now vs peer median 6.72median 1.08 -3.29median 1.08 -20.20median 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 monthsCALXEXTRATEN
Revenue $1.11B $1.31B $310.17M
Gross profit $628.73M $813.05M $246.21M
Operating income $61.25M $74.49M $50.08M
Net income $51.19M $52.49M $42.97M
Free cash flow $85.42M $154.76M $60.94M
R&D $207.99M $233.95M $77.12M
EPS (diluted) $0.78 $0.39 $0.57
Cash & equivalents $68.91M $244.52M $54.70M
Total debt – $200.00M $219.52M
Shares (diluted) 65.51M 134.68M 75.65M
Enterprise value $1.17B $2.07B $290.63M

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
MetricCALXEXTRATEN
P/E 47.5x 59.1x 43.4x
P/FCF 28.2x 20.2x 30.7x
P/Operating cash flow 22.0x 17.1x 24.4x
P/S 2.2x 2.4x 6.0x
P/B 3.4x 35.4x 7.9x
P/Tangible book 3.4x 36.5x 8.4x
EV/EBITDA 28.0x 30.7x 26.2x
EV/EBIT 36.2x 41.3x 34.6x
EV/Revenue 2.0x 2.3x 5.6x
EV/FCF 26.0x 19.9x 28.5x
EV/Operating cash flow 20.3x 16.8x 22.6x
PEG (3Y EPS CAGR) 6.72 -3.29 -20.20

Growth

14 metrics
MetricCALXEXTRATEN
Revenue growth (1Y) 27.8% 11.3% 12.2%
Revenue CAGR (3Y) 3.9% -1.3% 4.3%
Gross profit growth (1Y) 30.3% 11.7% 11.7%
Gross profit CAGR (3Y) 7.4% 0.5% 4.0%
Operating income growth (1Y) 273.3% 126.0% 4.5%
Operating income CAGR (3Y) 3.8% -16.3% -0.2%
Net income growth (1Y) 290.5% 506.9% -15.8%
Net income CAGR (3Y) 4.9% -17.7% -2.1%
EPS growth (1Y) 287.6% 508.7% -18.6%
EPS CAGR (3Y) 7.1% -18.0% -2.1%
Operating cash flow growth (1Y) 24.5% 52.9% -9.8%
Operating cash flow CAGR (3Y) 41.8% -12.8% 8.6%
Free cash flow growth (1Y) 19.4% 63.2% -13.7%
Free cash flow CAGR (3Y) 62.0% -15.9% 7.4%

Profitability

14 metrics
MetricCALXEXTRATEN
Gross margin 56.6% 61.9% 79.4%
EBITDA margin 7.1% 7.6% 21.4%
Operating margin 5.5% 5.7% 16.1%
Pretax margin 6.5% 4.7% 17.5%
Net margin 4.6% 4.0% 13.9%
FCF margin 7.7% 11.8% 19.6%
Operating cash flow margin 9.9% 13.9% 24.8%
Return on equity 7.1% 59.4% 18.7%
Return on assets 5.4% 4.2% 6.5%
Return on invested capital – 23.5% 8.9%
Return on capital employed 8.2% 12.8% 17.8%
Asset turnover 1.2x 1.1x 0.5x
Cash conversion (OCF / net income) 2.1x 3.5x 1.8x
Stock comp / revenue 7.2% 6.7% 7.5%

Financial Health

11 metrics
MetricCALXEXTRATEN
Debt / assets – 15.4% 32.4%
Debt / equity – 2.3x 0.9x
Net debt / EBITDA – -0.4x -2.1x
Debt / FCF – 1.3x 3.6x
Liabilities / assets 25.6% 93.2% 64.9%
Equity / assets 74.4% 6.8% 35.1%
Interest coverage – 4.9x –
Current ratio 2.8x 1.0x 1.3x
Quick ratio 1.6x 0.6x 1.1x
Cash ratio 0.9x 0.4x 1.0x
Altman Z-score 7.28 1.79 3.49

Shareholder Returns

7 metrics
MetricCALXEXTRATEN
Dividend yield – – 0.9%
Net buyback yield 7.9% 3.2% 1.1%
Shareholder yield 7.9% 3.2% 2.1%
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.

ConsensusCALXEXTRATEN
Forward P/E 23.6xFY2026 17.1xFY2027 25.8xFY2026
EPS, next fiscal year $1.62FY2026 $1.38FY2027 $1.00FY2026
EPS growth, next FY +20.9%FY2026 +30.2%FY2027 +11.1%FY2026
EPS growth, the year after +48.1% +2.9% +13.0%
Revenue, next fiscal year $1.11BFY2026 $1.34BFY2027 $342.96MFY2026
Revenue growth, next FY +11.0%FY2026 +4.5%FY2027 +18.0%FY2026
Revenue growth, the year after +18.8% +21.3% +3.4%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersCALXEXTRATEN
Held by institutions 94.5% 96.7% 100.0%
Institutions holding 289 338 311
Change in shares held, QoQ +0.5% +1.2% +5.8%
Institutions buying 148 181 171
Institutions selling 111 121 99
Buyers to sellers 1.33 1.50 1.73

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.

CALXEXTRATEN
CALX 1.00 0.31 0.21
EXTR 0.31 1.00 0.33
ATEN 0.21 0.33 1.00

Add a Peer

Largest companies in the same industry

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Frequently Asked Questions

Which is bigger, CALX, EXTR and ATEN?

Extreme Networks (EXTR) is the largest by market capitalisation: Calix (CALX) $2.33B, Extreme Networks (EXTR) $2.96B, A10 Networks (ATEN) $1.77B.

Which stock is cheaper, CALX, EXTR and ATEN?

A10 Networks (ATEN) trades on the lowest price-to-earnings ratio (Calix (CALX) 45.6x, Extreme Networks (EXTR) 56.4x, A10 Networks (ATEN) 41.1x). On next year's consensus earnings, Extreme Networks (EXTR) is cheapest (Calix (CALX) 23.6x, Extreme Networks (EXTR) 17.1x, A10 Networks (ATEN) 25.8x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Calix (CALX) grew revenue fastest over the trailing twelve months: Calix (CALX) +27.8%, Extreme Networks (EXTR) +11.3%, A10 Networks (ATEN) +12.2%.

Which company is more profitable?

A10 Networks (ATEN) has the highest net margin (Calix (CALX) 4.6%, Extreme Networks (EXTR) 4.0%, A10 Networks (ATEN) 13.9%). On return on invested capital, Extreme Networks (EXTR) leads (Extreme Networks (EXTR) 23.5%, A10 Networks (ATEN) 8.9%).

Which stock has performed better?

Over the past year A10 Networks (ATEN) returned the most: Calix (CALX) -38.4%, Extreme Networks (EXTR) +31.0%, A10 Networks (ATEN) +47.7%. Over five years, Extreme Networks (EXTR) compounded fastest (Calix (CALX) -9.4%/yr, Extreme Networks (EXTR) +19.1%/yr, A10 Networks (ATEN) +6.7%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, A10 Networks (ATEN) has been the steadiest (Calix (CALX) 41.6%, Extreme Networks (EXTR) 53.1%, A10 Networks (ATEN) 39.8%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, CALX, EXTR and ATEN?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, A10 Networks (ATEN) leads on 5. 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.