ATEN vs AAOI vs EXTR Stock Comparison

A10 Networks, Applied Optoelectronics and Extreme Networks Prices as of Nov 4, 2026 Peers: Industry group
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ATEN A10 Networks, Inc.
$23.82 -15.5% 1M +36.0% 1Y
Market cap
$1.61B
P/E
37.4x
Revenue (TTM)
$310.17M
Div. yield
–
Networking Equipment Technology
4 wins
EXTR Extreme Networks Inc
$22.84 -2.1% 1M +28.3% 1Y
Market cap
$2.68B
P/E
51.0x
Revenue (TTM)
$1.31B
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, A10 Networks 4, Extreme Networks 3). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionATENAAOIEXTRLeader
Larger companyMarket capitalisation $1.61B $3.90B $2.68B AAOI
Cheaper on earningsLower P/E, profitable companies only 37.4x -68.4x 51.0x ATEN
Cheaper on forward earningsLower price / next fiscal year consensus EPS 23.8x 83.5x 16.6x EXTR
Faster revenue growthRevenue growth, trailing twelve months +12.2% +61.8% +11.3% AAOI
More profitableNet margin, trailing twelve months 13.9% -9.6% 4.0% ATEN
Better return on capitalReturn on invested capital 8.9% -4.2% 23.5% EXTR
Less leveragedLower net debt / EBITDA -2.1x 13.8x -0.4x ATEN
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months +36.0% +100.9% +28.3% AAOI
Better 5-year returnAnnualised price return, 5 years +7.5%/yr +58.9%/yr +14.7%/yr AAOI
Less volatileAnnualised volatility, 1 year 40.4% 139.7% 52.9% ATEN
Higher overall scoreMean of the five percentile scores vs peers 51/100 32/100 57/100 EXTR

Percentile Scorecard

ATENAAOIEXTR

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

AxisATENAAOIEXTR
Valuation 43 #64 of 112 13 #98 of 112 50 #57 of 112
Growth 26 #80 of 108 53 #51 of 108 49 #56 of 108
Profitability 83 #19 of 104 17 #87 of 104 76 #26 of 104
Financial Health 33 #78 of 116 70 #35 of 116 23 #90 of 116
Shareholder Returns 68 #28 of 85 7 #79 of 85 89 #10 of 85
Overall 51 32 57
  • ATEN ranked among 121 companies in Computer Hardware
  • AAOI 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

PeriodATENAAOIEXTRSPY
1 month -15.5%-51.2%-2.1% -1.0%
3 months -22.9%-53.9%-12.8% -0.4%
6 months -10.9%-66.8%-3.0% +4.5%
Year to date +34.7%+70.0%+37.2% +12.4%
1 year +36.0%+100.9%+28.3% +13.6%
3 years +117.9%+525.9%+36.0% +76.4%
3 years, per year +29.7%+84.4%+10.8% +20.8%
5 years +43.8%+911.4%+98.4% +63.7%
5 years, per year +7.5%+58.9%+14.7% +10.4%
10 years +220.2%+173.8%+429.9% +267.7%
10 years, per year +12.3%+10.6%+18.1% +13.9%

Risk

MeasureATENAAOIEXTRSPY
Volatility, 1Y 40.4%139.7%52.9% 12.8%
Downside volatility, 1Y 43.3%128.5%51.2% 12.7%
Beta vs S&P 500, 1Y 1.104.281.57 1.00
Return / volatility, 1Y 0.890.720.54 1.06
Max drawdown, 5Y -44.6%-77.2%-67.2% -25.4%
From 52-week high -37.5%-73.4%-32.2% -1.6%
52-week high $38.14$223.10$33.71 $779.14
52-week low $16.55$19.49$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.

MultipleATENAAOIEXTR
P/E now vs peer median 40.0xmedian 28.1x -84.8xmedian 28.1x 57.2xmedian 28.1x
P/S now vs peer median 5.6xmedian 2.6x 8.4xmedian 2.6x 2.3xmedian 2.6x
EV/EBITDA now vs peer median 24.0xmedian 18.4x -142.0xmedian 18.4x 29.7xmedian 18.4x
P/FCF now vs peer median 28.3xmedian 26.6x -8.3xmedian 26.6x 19.5xmedian 26.6x
P/B now vs peer median 7.3xmedian 2.8x 3.0xmedian 2.8x 34.3xmedian 2.8x
PEG now vs peer median -18.62median 1.11 -2.55median 1.11 -3.19median 1.11

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 monthsATENAAOIEXTR
Revenue $310.17M $595.97M $1.31B
Gross profit $246.21M $172.33M $813.05M
Operating income $50.08M -$67.41M $74.49M
Net income $42.97M -$57.02M $52.49M
Free cash flow $60.94M -$600.81M $154.76M
R&D $77.12M $107.61M $233.95M
EPS (diluted) $0.57 $-0.70 $0.39
Cash & equivalents $54.70M $499.74M $244.52M
Total debt $219.52M $57.26M $200.00M
Shares (diluted) 75.65M 81.57M 134.68M
Enterprise value $130.07M $2.62B $1.79B

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
MetricATENAAOIEXTR
P/E 40.0x -84.8x 57.2x
P/FCF 28.3x -8.3x 19.5x
P/Operating cash flow 22.5x -37.9x 16.5x
P/S 5.6x 8.4x 2.3x
P/B 7.3x 3.0x 34.3x
P/Tangible book 7.7x 3.0x 35.4x
EV/EBITDA 24.0x -142.0x 29.7x
EV/EBIT 31.7x -67.6x 39.9x
EV/Revenue 5.1x 7.6x 2.3x
EV/FCF 26.1x -7.6x 19.2x
EV/Operating cash flow 20.7x -34.6x 16.3x
PEG (3Y EPS CAGR) -18.62 -2.55 -3.19

Growth

14 metrics
MetricATENAAOIEXTR
Revenue growth (1Y) 12.2% 61.8% 11.3%
Revenue CAGR (3Y) 4.3% 40.9% -1.3%
Gross profit growth (1Y) 11.7% 62.0% 11.7%
Gross profit CAGR (3Y) 4.0% 73.3% 0.5%
Operating income growth (1Y) 4.5% -40.6% 126.0%
Operating income CAGR (3Y) -0.2% -2.8% -16.3%
Net income growth (1Y) -15.8% 63.4% 506.9%
Net income CAGR (3Y) -2.1% 6.2% -17.7%
EPS growth (1Y) -18.6% 74.5% 508.7%
EPS CAGR (3Y) -2.1% 33.2% -18.0%
Operating cash flow growth (1Y) -9.8% 15.2% 52.9%
Operating cash flow CAGR (3Y) 8.6% -168.6% -12.8%
Free cash flow growth (1Y) -13.7% -146.3% 63.2%
Free cash flow CAGR (3Y) 7.4% -294.2% -15.9%

Profitability

14 metrics
MetricATENAAOIEXTR
Gross margin 79.4% 28.9% 61.9%
EBITDA margin 21.4% -5.4% 7.6%
Operating margin 16.1% -11.3% 5.7%
Pretax margin 17.5% -10.6% 4.7%
Net margin 13.9% -9.6% 4.0%
FCF margin 19.6% -100.8% 11.8%
Operating cash flow margin 24.8% -22.1% 13.9%
Return on equity 18.7% -4.1% 59.4%
Return on assets 6.5% -2.9% 4.2%
Return on invested capital 8.9% -4.2% 23.5%
Return on capital employed 17.8% -4.5% 12.8%
Asset turnover 0.5x 0.3x 1.1x
Cash conversion (OCF / net income) 1.8x 2.3x 3.5x
Stock comp / revenue 7.5% 2.6% 6.7%

Financial Health

11 metrics
MetricATENAAOIEXTR
Debt / assets 32.4% 2.5% 15.4%
Debt / equity 0.9x 0.0x 2.3x
Net debt / EBITDA -2.1x 13.8x -0.4x
Debt / FCF 3.6x -0.1x 1.3x
Liabilities / assets 64.9% 27.5% 93.2%
Equity / assets 35.1% 72.5% 6.8%
Interest coverage – -19.1x 4.9x
Current ratio 1.3x 2.8x 1.0x
Quick ratio 1.1x 1.9x 0.6x
Cash ratio 1.0x 1.2x 0.4x
Altman Z-score 3.30 4.98 1.74

Shareholder Returns

7 metrics
MetricATENAAOIEXTR
Dividend yield 1.0% – –
Net buyback yield 1.2% -27.0% 3.3%
Shareholder yield 2.2% -27.0% 3.3%
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.

ConsensusATENAAOIEXTR
Forward P/E 23.8xFY2026 83.5xFY2026 16.6xFY2027
EPS, next fiscal year $1.00FY2026 $0.71FY2026 $1.38FY2027
EPS growth, next FY +11.1%FY2026 – +30.2%FY2027
EPS growth, the year after +13.0% +646.5% +2.9%
Revenue, next fiscal year $342.96MFY2026 $994.70MFY2026 $1.34BFY2027
Revenue growth, next FY +18.0%FY2026 +118.3%FY2026 +4.5%FY2027
Revenue growth, the year after +3.4% +185.6% +21.3%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersATENAAOIEXTR
Held by institutions 100.0% 60.5% 96.7%
Institutions holding 312 482 339
Change in shares held, QoQ +5.8% -3.5% +1.2%
Institutions buying 172 313 182
Institutions selling 99 144 121
Buyers to sellers 1.74 2.17 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.

ATENAAOIEXTR
ATEN 1.00 0.31 0.34
AAOI 0.31 1.00 0.35
EXTR 0.34 0.35 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, ATEN, AAOI and EXTR?

Applied Optoelectronics (AAOI) is the largest by market capitalisation: A10 Networks (ATEN) $1.61B, Applied Optoelectronics (AAOI) $3.90B, Extreme Networks (EXTR) $2.68B.

Which stock is cheaper, ATEN, AAOI and EXTR?

A10 Networks (ATEN) trades on the lowest price-to-earnings ratio (A10 Networks (ATEN) 37.4x, Applied Optoelectronics (AAOI) -68.4x, Extreme Networks (EXTR) 51.0x). On next year's consensus earnings, Extreme Networks (EXTR) is cheapest (A10 Networks (ATEN) 23.8x, Applied Optoelectronics (AAOI) 83.5x, Extreme Networks (EXTR) 16.6x). 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: A10 Networks (ATEN) +12.2%, Applied Optoelectronics (AAOI) +61.8%, Extreme Networks (EXTR) +11.3%.

Which company is more profitable?

A10 Networks (ATEN) has the highest net margin (A10 Networks (ATEN) 13.9%, Applied Optoelectronics (AAOI) -9.6%, Extreme Networks (EXTR) 4.0%). On return on invested capital, Extreme Networks (EXTR) leads (A10 Networks (ATEN) 8.9%, Applied Optoelectronics (AAOI) -4.2%, Extreme Networks (EXTR) 23.5%).

Which stock has performed better?

Over the past year Applied Optoelectronics (AAOI) returned the most: A10 Networks (ATEN) +36.0%, Applied Optoelectronics (AAOI) +100.9%, Extreme Networks (EXTR) +28.3%. Over five years, Applied Optoelectronics (AAOI) compounded fastest (A10 Networks (ATEN) +7.5%/yr, Applied Optoelectronics (AAOI) +58.9%/yr, Extreme Networks (EXTR) +14.7%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, A10 Networks (ATEN) has been the steadiest (A10 Networks (ATEN) 40.4%, Applied Optoelectronics (AAOI) 139.7%, Extreme Networks (EXTR) 52.9%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, ATEN, AAOI 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, 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.