EXTR vs AAOI vs CALX Stock Comparison

Extreme Networks, Applied Optoelectronics and Calix Prices as of Nov 5, 2026 Peers: Industry group
1 more company in this comparison (VISN) Create a free account to keep reading and compare up to 10 companies.
EXTR Extreme Networks Inc
$21.05 -14.2% 1M +19.3% 1Y
Market cap
$2.78B
P/E
52.7x
Revenue (TTM)
$1.31B
Div. yield
–
Networking Equipment Technology
4 wins
CALX Calix, Inc
$31.86 -9.6% 1M -52.6% 1Y
Market cap
$1.97B
P/E
43.7x
Revenue (TTM)
$1.15B
Div. yield
–
Networking Equipment Technology
3 wins

Head to Head

11 decided of 12

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

QuestionEXTRAAOICALXLeader
Larger companyMarket capitalisation $2.78B $4.26B $1.97B AAOI
Cheaper on earningsLower P/E, profitable companies only 52.7x -122.1x 43.7x CALX
Cheaper on forward earningsLower price / next fiscal year consensus EPS 14.5x 66.0x 19.1x EXTR
Faster revenue growthRevenue growth, trailing twelve months +11.3% +77.2% +22.9% AAOI
More profitableNet margin, trailing twelve months 4.0% -4.4% 4.0% EXTR
Better return on capitalReturn on invested capital 23.5% -2.3% — EXTR
Less leveragedLower net debt / EBITDA -0.4x 68.1x — EXTR
Higher dividend yieldTrailing dividend yield — — — –
Better 1-year returnPrice return, last 12 months +19.3% +48.8% -52.6% AAOI
Better 5-year returnAnnualised price return, 5 years +12.8%/yr +51.6%/yr -14.9%/yr AAOI
Less volatileAnnualised volatility, 1 year 53.5% 141.5% 41.8% CALX
Higher overall scoreMean of the five percentile scores vs peers 56/100 33/100 71/100 CALX

Percentile Scorecard

EXTRAAOICALX

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

AxisEXTRAAOICALX
Valuation 46 #61 of 112 14 #96 of 112 50 #57 of 112
Growth 45 #60 of 108 64 #40 of 108 69 #34 of 108
Profitability 76 #26 of 104 18 #85 of 104 59 #43 of 104
Financial Health 23 #90 of 116 63 #44 of 116 75 #30 of 116
Shareholder Returns 89 #10 of 83 4 #80 of 83 100 #1 of 83
Overall 56 33 71
  • EXTR ranked among 121 companies in Computer Hardware
  • AAOI ranked among 121 companies in Computer Hardware
  • CALX ranked among 121 companies in Computer Hardware

Price Performance

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

Returns

PeriodEXTRAAOICALXSPY
1 month -14.2%-64.0%-9.6% -5.9%
3 months -13.4%-62.3%-14.9% -4.6%
6 months -10.5%-70.2%-26.8% +0.2%
Year to date +26.4%+34.5%-39.8% +7.5%
1 year +19.3%+48.8%-52.6% +8.2%
3 years +23.9%+383.9%-10.5% +68.3%
3 years, per year +7.4%+69.2%-3.6% +19.0%
5 years +82.9%+700.2%-55.2% +56.5%
5 years, per year +12.8%+51.6%-14.9% +9.4%
10 years +388.4%+116.6%+382.7% +251.5%
10 years, per year +17.2%+8.0%+17.1% +13.4%

Risk

MeasureEXTRAAOICALXSPY
Volatility, 1Y 53.5%141.5%41.8% 13.6%
Downside volatility, 1Y 52.5%132.3%45.9% 14.2%
Beta vs S&P 500, 1Y 1.604.370.99 1.00
Return / volatility, 1Y 0.360.34-1.26 0.60
Max drawdown, 5Y -67.2%-79.0%-65.3% -25.4%
From 52-week high -37.6%-79.0%-52.6% -5.9%
52-week high $33.71$223.10$67.18 $779.14
52-week low $13.74$19.49$31.86 $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.

MultipleEXTRAAOICALX
P/E now vs peer median 52.7xmedian 25.2x -122.1xmedian 25.2x 43.7xmedian 25.2x
P/S now vs peer median 2.1xmedian 2.4x 5.7xmedian 2.4x 1.7xmedian 2.4x
EV/EBITDA now vs peer median 27.3xmedian 16.2x -463.5xmedian 16.2x 23.2xmedian 16.2x
P/FCF now vs peer median 18.0xmedian 23.4x -4.8xmedian 23.4x 31.7xmedian 23.4x
P/B now vs peer median 31.6xmedian 2.3x 1.9xmedian 2.3x 2.8xmedian 2.3x
PEG now vs peer median -2.94median 0.98 -2.91median 0.98 41.08median 0.98

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 monthsEXTRAAOICALX
Revenue $1.31B $747.22M $1.15B
Gross profit $813.05M $215.22M $637.49M
Operating income $74.49M -$50.66M $60.39M
Net income $52.49M -$32.78M $45.75M
Free cash flow $154.76M -$883.41M $62.16M
R&D $233.95M $124.46M $215.00M
EPS (diluted) $0.39 $-0.37 $0.71
Cash & equivalents $244.52M $605.41M $55.89M
Total debt $200.00M $59.99M –
Shares (diluted) 134.68M 87.84M 64.45M
Enterprise value $1.90B $2.51B $988.59M

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
MetricEXTRAAOICALX
P/E 52.7x -122.1x 43.7x
P/FCF 18.0x -4.8x 31.7x
P/Operating cash flow 15.2x -40.1x 23.6x
P/S 2.1x 5.7x 1.7x
P/B 31.6x 1.9x 2.8x
P/Tangible book 32.6x 1.9x 2.8x
EV/EBITDA 27.3x -463.5x 23.2x
EV/EBIT 36.8x -73.2x 30.0x
EV/Revenue 2.1x 5.0x 1.6x
EV/FCF 17.7x -4.2x 29.2x
EV/Operating cash flow 15.0x -34.9x 21.7x
PEG (3Y EPS CAGR) -2.94 -2.91 41.08

Growth

14 metrics
MetricEXTRAAOICALX
Revenue growth (1Y) 11.3% 77.2% 22.9%
Revenue CAGR (3Y) -1.3% 50.6% 4.0%
Gross profit growth (1Y) 11.7% 74.0% 21.6%
Gross profit CAGR (3Y) 0.5% 70.3% 6.4%
Operating income growth (1Y) 126.0% -2.2% 958.5%
Operating income CAGR (3Y) -16.3% 2.8% 6.0%
Net income growth (1Y) 506.9% 79.0% 730.9%
Net income CAGR (3Y) -17.7% 19.3% -1.5%
EPS growth (1Y) 508.7% 84.8% 783.2%
EPS CAGR (3Y) -18.0% 41.9% 1.1%
Operating cash flow growth (1Y) 52.9% 37.3% -19.9%
Operating cash flow CAGR (3Y) -12.8% -101.6% 20.7%
Free cash flow growth (1Y) 63.2% -192.6% -27.3%
Free cash flow CAGR (3Y) -15.9% -275.9% 29.3%

Profitability

14 metrics
MetricEXTRAAOICALX
Gross margin 61.9% 28.8% 55.6%
EBITDA margin 7.6% -1.1% 6.8%
Operating margin 5.7% -6.8% 5.3%
Pretax margin 4.7% -4.9% 6.1%
Net margin 4.0% -4.4% 4.0%
FCF margin 11.8% -118.2% 5.4%
Operating cash flow margin 13.9% -14.2% 7.3%
Return on equity 59.4% -1.7% 6.5%
Return on assets 4.2% -1.2% 4.9%
Return on invested capital 23.5% -2.3% –
Return on capital employed 12.8% -2.5% 8.0%
Asset turnover 1.1x 0.3x 1.2x
Cash conversion (OCF / net income) 3.5x 3.2x 1.8x
Stock comp / revenue 6.7% 2.4% 7.0%

Financial Health

11 metrics
MetricEXTRAAOICALX
Debt / assets 15.4% 1.9% –
Debt / equity 2.3x 0.0x –
Net debt / EBITDA -0.4x 68.1x –
Debt / FCF 1.3x -0.1x –
Liabilities / assets 93.2% 28.5% 24.1%
Equity / assets 6.8% 71.5% 75.9%
Interest coverage 4.9x -13.1x –
Current ratio 1.0x 2.3x 3.0x
Quick ratio 0.6x 1.5x 1.5x
Cash ratio 0.4x 0.9x 0.8x
Altman Z-score 1.63 3.15 6.80

Shareholder Returns

7 metrics
MetricEXTRAAOICALX
Dividend yield – – –
Net buyback yield 3.6% -41.5% 12.6%
Shareholder yield 3.6% -41.5% 12.6%
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.

ConsensusEXTRAAOICALX
Forward P/E 14.5xFY2027 66.0xFY2026 19.1xFY2026
EPS, next fiscal year $1.45FY2027 $0.71FY2026 $1.67FY2026
EPS growth, next FY +36.8%FY2027 – +24.6%FY2026
EPS growth, the year after +0.7% +646.5% +56.3%
Revenue, next fiscal year $1.36BFY2027 $994.70MFY2026 $1.11BFY2026
Revenue growth, next FY +6.0%FY2027 +118.3%FY2026 +11.0%FY2026
Revenue growth, the year after +22.0% +185.6% +19.6%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersEXTRAAOICALX
Held by institutions 96.7% 60.5% 94.5%
Institutions holding 339 482 290
Change in shares held, QoQ +1.2% -3.5% +0.5%
Institutions buying 182 313 148
Institutions selling 121 144 111
Buyers to sellers 1.50 2.17 1.33

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.

EXTRAAOICALX
EXTR 1.00 0.37 0.31
AAOI 0.37 1.00 0.25
CALX 0.31 0.25 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, EXTR, AAOI and CALX?

Applied Optoelectronics (AAOI) is the largest by market capitalisation: Extreme Networks (EXTR) $2.78B, Applied Optoelectronics (AAOI) $4.26B, Calix (CALX) $1.97B.

Which stock is cheaper, EXTR, AAOI and CALX?

Calix (CALX) trades on the lowest price-to-earnings ratio (Extreme Networks (EXTR) 52.7x, Applied Optoelectronics (AAOI) -122.1x, Calix (CALX) 43.7x). On next year's consensus earnings, Extreme Networks (EXTR) is cheapest (Extreme Networks (EXTR) 14.5x, Applied Optoelectronics (AAOI) 66.0x, Calix (CALX) 19.1x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Applied Optoelectronics (AAOI) grew revenue fastest over the trailing twelve months: Extreme Networks (EXTR) +11.3%, Applied Optoelectronics (AAOI) +77.2%, Calix (CALX) +22.9%.

Which company is more profitable?

Extreme Networks (EXTR) has the highest net margin (Extreme Networks (EXTR) 4.0%, Applied Optoelectronics (AAOI) -4.4%, Calix (CALX) 4.0%). On return on invested capital, Extreme Networks (EXTR) leads (Extreme Networks (EXTR) 23.5%, Applied Optoelectronics (AAOI) -2.3%).

Which stock has performed better?

Over the past year Applied Optoelectronics (AAOI) returned the most: Extreme Networks (EXTR) +19.3%, Applied Optoelectronics (AAOI) +48.8%, Calix (CALX) -52.6%. Over five years, Applied Optoelectronics (AAOI) compounded fastest (Extreme Networks (EXTR) +12.8%/yr, Applied Optoelectronics (AAOI) +51.6%/yr, Calix (CALX) -14.9%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Calix (CALX) has been the steadiest (Extreme Networks (EXTR) 53.5%, Applied Optoelectronics (AAOI) 141.5%, Calix (CALX) 41.8%). Volatility measures how widely the price swings, not the risk of the business.

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

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Applied Optoelectronics (AAOI) 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.