EXTR vs CSCO vs AAOI Stock Comparison

Extreme Networks, Cisco Systems and Applied Optoelectronics Prices as of Oct 27, 2026 Peers: Industry group
EXTR Extreme Networks Inc
$23.85 +10.8% 1M +15.0% 1Y
Market cap
$3.25B
P/E
77.2x
Revenue (TTM)
$1.28B
Div. yield
–
Networking Equipment Technology
3 wins
CSCO Cisco Systems, Inc.
$111.38 +4.4% 1M +56.0% 1Y
Market cap
$433.29B
P/E
32.7x
Revenue (TTM)
$63.33B
Div. yield
–
Networking Equipment Technology
5 wins

Head to Head

11 decided of 12

Cisco Systems leads on 5 of the 12 questions below (Cisco Systems 5, Extreme Networks 3, Applied Optoelectronics 3). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionEXTRCSCOAAOILeader
Larger companyMarket capitalisation $3.25B $433.29B $6.48B CSCO
Cheaper on earningsLower P/E, profitable companies only 77.2x 32.7x -113.7x CSCO
Cheaper on forward earningsLower price / next fiscal year consensus EPS 17.3x 23.5x 108.4x EXTR
Faster revenue growthRevenue growth, trailing twelve months +12.6% +11.8% +61.8% AAOI
More profitableNet margin, trailing twelve months 3.3% 21.0% -9.6% CSCO
Better return on capitalReturn on invested capital 19.4% 15.9% -4.2% EXTR
Less leveragedLower net debt / EBITDA -0.6x 0.8x 13.8x EXTR
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months +15.0% +56.0% +106.7% AAOI
Better 5-year returnAnnualised price return, 5 years +19.1%/yr +14.7%/yr +58.7%/yr AAOI
Less volatileAnnualised volatility, 1 year 55.6% 35.5% 138.8% CSCO
Higher overall scoreMean of the five percentile scores vs peers 52/100 54/100 33/100 CSCO

Percentile Scorecard

EXTRCSCOAAOI

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

AxisEXTRCSCOAAOI
Valuation 36 #72 of 112 32 #76 of 112 13 #98 of 112
Growth 42 #64 of 109 41 #65 of 109 56 #49 of 109
Profitability 69 #33 of 104 87 #14 of 104 17 #87 of 104
Financial Health 24 #89 of 116 30 #82 of 116 72 #33 of 116
Shareholder Returns 89 #10 of 81 79 #18 of 81 9 #74 of 81
Overall 52 54 33
  • EXTR ranked among 122 companies in Computer Hardware
  • CSCO ranked among 122 companies in Computer Hardware
  • AAOI ranked among 122 companies in Computer Hardware

Price Performance

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

Returns

PeriodEXTRCSCOAAOISPY
1 month +10.8%+4.4%-24.1% -0.2%
3 months -20.5%-3.6%-12.7% +3.9%
6 months +39.9%+28.2%-43.9% +8.2%
Year to date +43.2%+44.6%+120.7% +12.9%
1 year +15.0%+56.0%+106.7% +12.3%
3 years +16.1%+116.0%+993.0% +87.4%
3 years, per year +5.1%+29.3%+122.0% +23.3%
5 years +139.5%+98.0%+904.6% +67.9%
5 years, per year +19.1%+14.7%+58.7% +10.9%
10 years +470.6%+266.6%+284.9% +261.1%
10 years, per year +19.0%+13.9%+14.4% +13.7%

Risk

MeasureEXTRCSCOAAOISPY
Volatility, 1Y 55.6%35.5%138.8% 12.7%
Downside volatility, 1Y 56.6%37.3%126.6% 12.7%
Beta vs S&P 500, 1Y 1.561.114.31 1.00
Return / volatility, 1Y 0.271.580.77 0.97
Max drawdown, 5Y -67.2%-38.6%-82.6% -25.4%
From 52-week high -29.2%-14.3%-65.5% -1.2%
52-week high $33.71$130.00$223.10 $779.14
52-week low $13.74$71.04$19.49 $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.

MultipleEXTRCSCOAAOI
P/E now vs peer median 75.2xmedian 33.2x 33.2xmedian 33.2x -110.1xmedian 33.2x
P/S now vs peer median 2.4xmedian 2.8x 6.9xmedian 2.8x 10.9xmedian 2.8x
EV/EBITDA now vs peer median 35.8xmedian 20.0x 25.3xmedian 20.0x -188.5xmedian 20.0x
P/FCF now vs peer median 32.9xmedian 29.8x 34.4xmedian 29.8x -10.8xmedian 29.8x
P/B now vs peer median 35.3xmedian 3.0x 8.7xmedian 3.0x 3.9xmedian 3.0x
PEG now vs peer median -3.99median 1.17 12.32median 1.17 -3.32median 1.17

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 monthsEXTRCSCOAAOI
Revenue $1.28B $63.33B $595.97M
Gross profit $789.14M $40.86B $172.33M
Operating income $62.70M $15.37B -$67.41M
Net income $42.12M $13.27B -$57.02M
Free cash flow $95.24M $12.77B -$600.81M
R&D $233.88M $9.56B $107.61M
EPS (diluted) $0.31 $3.33 $-0.70
Cash & equivalents $211.76M $7.22B $499.74M
Total debt $163.72M $29.53B $57.26M
Shares (diluted) 134.97M 3.99B 81.57M
Enterprise value $2.40B $369.22B $5.20B

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
MetricEXTRCSCOAAOI
P/E 75.2x 33.2x -110.1x
P/FCF 32.9x 34.4x -10.8x
P/Operating cash flow 25.4x 31.0x -49.3x
P/S 2.4x 6.9x 10.9x
P/B 35.3x 8.7x 3.9x
P/Tangible book 36.6x 10.3x 3.9x
EV/EBITDA 35.8x 25.3x -188.5x
EV/EBIT 49.2x 29.5x -89.8x
EV/Revenue 2.4x 7.2x 10.2x
EV/FCF 32.4x 35.5x -10.1x
EV/Operating cash flow 25.0x 32.0x -45.9x
PEG (3Y EPS CAGR) -3.99 12.32 -3.32

Growth

14 metrics
MetricEXTRCSCOAAOI
Revenue growth (1Y) 12.6% 11.8% 61.8%
Revenue CAGR (3Y) -0.7% 3.6% 40.9%
Gross profit growth (1Y) 11.3% 11.1% 62.0%
Gross profit CAGR (3Y) 1.5% 4.6% 73.3%
Operating income growth (1Y) 269.9% 30.7% -40.6%
Operating income CAGR (3Y) -16.7% 0.7% -2.8%
Net income growth (1Y) 664.1% 30.3% 63.4%
Net income CAGR (3Y) -18.6% 1.7% 6.2%
EPS growth (1Y) 653.0% 30.7% 74.5%
EPS CAGR (3Y) -18.9% 2.7% 33.2%
Operating cash flow growth (1Y) -19.0% -0.1% 15.2%
Operating cash flow CAGR (3Y) -20.9% -10.7% -168.6%
Free cash flow growth (1Y) -25.2% -3.9% -146.3%
Free cash flow CAGR (3Y) -26.0% -12.5% -294.2%

Profitability

14 metrics
MetricEXTRCSCOAAOI
Gross margin 61.5% 64.5% 28.9%
EBITDA margin 6.7% 28.3% -5.4%
Operating margin 4.9% 24.3% -11.3%
Pretax margin 4.0% 25.3% -10.6%
Net margin 3.3% 21.0% -9.6%
FCF margin 7.4% 20.2% -100.8%
Operating cash flow margin 9.6% 22.4% -22.1%
Return on equity 50.3% 26.8% -4.1%
Return on assets 3.6% 10.4% -2.9%
Return on invested capital 19.4% 15.9% -4.2%
Return on capital employed 10.8% 17.9% -4.5%
Asset turnover 1.1x 0.5x 0.3x
Cash conversion (OCF / net income) 2.9x 1.1x 2.3x
Stock comp / revenue 6.9% 6.0% 2.6%

Financial Health

11 metrics
MetricEXTRCSCOAAOI
Debt / assets 13.9% 22.8% 2.5%
Debt / equity 1.8x 0.6x 0.0x
Net debt / EBITDA -0.6x 0.8x 13.8x
Debt / FCF 1.7x 2.3x -0.1x
Liabilities / assets 92.5% 61.2% 27.5%
Equity / assets 7.5% 38.8% 72.5%
Interest coverage 4.5x 10.5x -19.1x
Current ratio 0.9x 0.9x 2.8x
Quick ratio 0.6x 0.6x 1.9x
Cash ratio 0.4x 0.4x 1.2x
Altman Z-score 1.87 4.19 6.39

Shareholder Returns

7 metrics
MetricEXTRCSCOAAOI
Dividend yield – 1.5% –
Net buyback yield 2.8% 1.3% -20.8%
Shareholder yield 2.8% 2.8% -20.8%
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.

ConsensusEXTRCSCOAAOI
Forward P/E 17.3xFY2027 23.5xFY2027 108.4xFY2026
EPS, next fiscal year $1.38FY2027 $4.74FY2027 $0.71FY2026
EPS growth, next FY +30.2%FY2027 +9.5%FY2027 –
EPS growth, the year after +2.9% +20.7% +646.5%
Revenue, next fiscal year $1.34BFY2027 $74.93BFY2027 $994.70MFY2026
Revenue growth, next FY +4.5%FY2027 +18.3%FY2027 +118.3%FY2026
Revenue growth, the year after +21.3% +0.6% +185.6%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersEXTRCSCOAAOI
Held by institutions 96.7% 80.1% 60.5%
Institutions holding 338 4,046 481
Change in shares held, QoQ +1.2% +5.0% -3.5%
Institutions buying 181 1,847 313
Institutions selling 121 1,817 143
Buyers to sellers 1.50 1.02 2.19

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.

EXTRCSCOAAOI
EXTR 1.00 0.50 0.34
CSCO 0.50 1.00 0.34
AAOI 0.34 0.34 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, EXTR, CSCO and AAOI?

Cisco Systems (CSCO) is the largest by market capitalisation: Extreme Networks (EXTR) $3.25B, Cisco Systems (CSCO) $433.29B, Applied Optoelectronics (AAOI) $6.48B.

Which stock is cheaper, EXTR, CSCO and AAOI?

Cisco Systems (CSCO) trades on the lowest price-to-earnings ratio (Extreme Networks (EXTR) 77.2x, Cisco Systems (CSCO) 32.7x, Applied Optoelectronics (AAOI) -113.7x). On next year's consensus earnings, Extreme Networks (EXTR) is cheapest (Extreme Networks (EXTR) 17.3x, Cisco Systems (CSCO) 23.5x, Applied Optoelectronics (AAOI) 108.4x). 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) +12.6%, Cisco Systems (CSCO) +11.8%, Applied Optoelectronics (AAOI) +61.8%.

Which company is more profitable?

Cisco Systems (CSCO) has the highest net margin (Extreme Networks (EXTR) 3.3%, Cisco Systems (CSCO) 21.0%, Applied Optoelectronics (AAOI) -9.6%). On return on invested capital, Extreme Networks (EXTR) leads (Extreme Networks (EXTR) 19.4%, Cisco Systems (CSCO) 15.9%, Applied Optoelectronics (AAOI) -4.2%).

Which stock has performed better?

Over the past year Applied Optoelectronics (AAOI) returned the most: Extreme Networks (EXTR) +15.0%, Cisco Systems (CSCO) +56.0%, Applied Optoelectronics (AAOI) +106.7%. Over five years, Applied Optoelectronics (AAOI) compounded fastest (Extreme Networks (EXTR) +19.1%/yr, Cisco Systems (CSCO) +14.7%/yr, Applied Optoelectronics (AAOI) +58.7%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Cisco Systems (CSCO) has been the steadiest (Extreme Networks (EXTR) 55.6%, Cisco Systems (CSCO) 35.5%, Applied Optoelectronics (AAOI) 138.8%). Volatility measures how widely the price swings, not the risk of the business.

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

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