AMBA vs MPWR vs SIMO Stock Comparison

Ambarella, Monolithic Power Systems and Silicon Motion Technology Prices as of Oct 27, 2026 Peers: Industry group
AMBA Ambarella Inc
$67.12 -7.6% 1M -22.4% 1Y
Market cap
$2.96B
P/E
–
Revenue (TTM)
$417.80M
Div. yield
–
Semiconductor Design Technology

Head to Head

9 decided of 12

Monolithic Power Systems leads on 5 of the 12 questions below (Monolithic Power Systems 5, Silicon Motion Technology 4). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionAMBAMPWRSIMOLeader
Larger companyMarket capitalisation $2.96B $59.55B $6.85B MPWR
Cheaper on earningsLower P/E, profitable companies only -52.4x 74.3x — –
Cheaper on forward earningsLower price / next fiscal year consensus EPS 87.2x 46.0x 17.8x SIMO
Faster revenue growthRevenue growth, trailing twelve months +20.0% +28.7% — MPWR
More profitableNet margin, trailing twelve months -13.5% 24.5% — MPWR
Better return on capitalReturn on invested capital — — — –
Less leveragedLower net debt / EBITDA — — — –
Higher dividend yieldTrailing dividend yield — 0.62% 0.98% SIMO
Better 1-year returnPrice return, last 12 months -22.4% +9.7% +98.3% SIMO
Better 5-year returnAnnualised price return, 5 years -18.8%/yr +17.1%/yr +24.0%/yr SIMO
Less volatileAnnualised volatility, 1 year 74.4% 55.0% 84.4% MPWR
Higher overall scoreMean of the five percentile scores vs peers 41/100 60/100 36/100 MPWR

Percentile Scorecard

AMBAMPWRSIMO

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

AxisAMBAMPWRSIMO
Valuation 33 #63 of 94 26 #70 of 94 14 #81 of 94
Growth 54 #43 of 92 68 #30 of 92 26 #68 of 92
Profitability 26 #67 of 90 81 #18 of 90 –
Financial Health 58 #42 of 99 79 #22 of 99 36 #64 of 99
Shareholder Returns 32 #50 of 73 46 #40 of 73 67 #25 of 73
Overall 41 60 36
  • AMBA ranked among 103 companies in Semiconductors
  • MPWR ranked among 103 companies in Semiconductors
  • SIMO ranked among 103 companies in Semiconductors

Price Performance

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

Returns

PeriodAMBAMPWRSIMOSPY
1 month -7.6%-11.4%-26.1% -0.2%
3 months -2.7%-5.5%-7.8% +3.9%
6 months +5.3%-19.4%+36.9% +8.2%
Year to date -5.3%+33.7%+120.2% +12.9%
1 year -22.4%+9.7%+98.3% +12.3%
3 years +43.4%+198.5%+287.9% +87.4%
3 years, per year +12.8%+44.0%+57.2% +23.3%
5 years -64.6%+120.5%+192.8% +67.9%
5 years, per year -18.8%+17.1%+24.0% +10.9%
10 years +9.3%+1,433.8%+339.9% +261.1%
10 years, per year +0.9%+31.4%+16.0% +13.7%

Risk

MeasureAMBAMPWRSIMOSPY
Volatility, 1Y 74.4%55.0%84.4% 12.7%
Downside volatility, 1Y 79.6%59.1%78.0% 12.7%
Beta vs S&P 500, 1Y 2.612.582.42 1.00
Return / volatility, 1Y -0.300.181.16 0.97
Max drawdown, 5Y -81.7%-51.9%-59.1% -25.4%
From 52-week high -29.7%-28.3%-39.4% -1.2%
52-week high $95.51$1,689.89$336.90 $779.14
52-week low $48.65$856.96$80.16 $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.

MultipleAMBAMPWRSIMO
P/E now vs peer median -52.4xmedian 45.6x 74.3xmedian 45.6x —median 45.6x
P/S now vs peer median 7.1xmedian 7.7x 18.2xmedian 7.7x —median 7.7x
EV/EBITDA now vs peer median -72.3xmedian 29.0x 58.1xmedian 29.0x —median 29.0x
P/FCF now vs peer median 304.8xmedian 40.6x 102.2xmedian 40.6x -533.1xmedian 40.6x
P/B now vs peer median 4.8xmedian 4.6x 15.3xmedian 4.6x 6.5xmedian 4.6x
PEG now vs peer median -2.67median 2.28 3.61median 2.28 —median 2.28

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 monthsAMBAMPWRSIMO
Revenue $417.80M $3.27B –
Gross profit $244.50M $1.81B –
Operating income -$62.24M $940.17M –
Net income -$56.32M $801.95M $289.77M
Free cash flow $9.72M $582.61M -$12.85M
R&D $228.69M $412.95M –
EPS (diluted) $-1.28 $16.28 –
Cash & equivalents $101.85M $1.01B $74.37M
Total debt – – $167.29M
Shares (diluted) 44.01M 49.26M 33.68M
Enterprise value $1.80B $54.25B $6.24B

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
MetricAMBAMPWRSIMO
P/E -52.4x 74.3x –
P/FCF 304.8x 102.2x -533.1x
P/Operating cash flow 108.4x 72.4x -102.8x
P/S 7.1x 18.2x –
P/B 4.8x 15.3x 6.5x
P/Tangible book 5.3x 15.3x 7.2x
EV/EBITDA -72.3x 58.1x –
EV/EBIT -43.2x 61.8x –
EV/Revenue 6.4x 17.8x –
EV/FCF 276.8x 99.8x -531.9x
EV/Operating cash flow 98.5x 70.7x -102.6x
PEG (3Y EPS CAGR) -2.67 3.61 –

Growth

14 metrics
MetricAMBAMPWRSIMO
Revenue growth (1Y) 20.0% 28.7% –
Revenue CAGR (3Y) 12.9% 21.0% –
Gross profit growth (1Y) 17.4% 28.4% –
Gross profit CAGR (3Y) 11.3% 19.3% –
Operating income growth (1Y) 36.9% 42.3% –
Operating income CAGR (3Y) 18.4% 21.4% –
Net income growth (1Y) 36.4% -52.0% 270.6%
Net income CAGR (3Y) 16.9% 21.0% 49.0%
EPS growth (1Y) 38.6% -53.2% –
EPS CAGR (3Y) 19.6% 20.6% –
Operating cash flow growth (1Y) -47.8% -8.0% -182.4%
Operating cash flow CAGR (3Y) 1.3% 33.8% -36.3%
Free cash flow growth (1Y) -73.7% -17.5% -109.8%
Free cash flow CAGR (3Y) -5.8% 23.9% -27.6%

Profitability

14 metrics
MetricAMBAMPWRSIMO
Gross margin 58.5% 55.2% –
EBITDA margin -8.9% 30.6% –
Operating margin -14.9% 28.7% –
Pretax margin -12.9% 30.1% –
Net margin -13.5% 24.5% –
FCF margin 2.3% 17.8% –
Operating cash flow margin 6.5% 25.1% –
Return on equity -9.2% 21.2% –
Return on assets -7.2% 17.6% –
Return on invested capital – – –
Return on capital employed -9.6% 23.1% –
Asset turnover 0.5x 0.7x –
Cash conversion (OCF / net income) -0.5x 1.0x -0.2x
Stock comp / revenue 21.9% 6.4% –

Financial Health

11 metrics
MetricAMBAMPWRSIMO
Debt / assets – – 3.7%
Debt / equity – – 0.1x
Net debt / EBITDA – – –
Debt / FCF – – -4.6x
Liabilities / assets 20.5% 16.9% 34.8%
Equity / assets 79.5% 83.1% 65.2%
Interest coverage – – –
Current ratio 2.8x 5.0x 2.5x
Quick ratio 2.2x 3.5x 0.8x
Cash ratio 2.0x 2.8x 0.2x
Altman Z-score 11.15 47.91 –

Shareholder Returns

7 metrics
MetricAMBAMPWRSIMO
Dividend yield – 0.6% 1.0%
Net buyback yield -0.1% 0.0% –
Shareholder yield -0.1% 0.6% 1.0%
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.

ConsensusAMBAMPWRSIMO
Forward P/E 87.2xFY2026 46.0xFY2026 17.8xFY2026
EPS, next fiscal year $0.77FY2026 $26.37FY2026 $11.50FY2026
EPS growth, next FY +24.2%FY2026 +48.4%FY2026 +223.9%FY2026
EPS growth, the year after +40.3% +41.9% +37.5%
Revenue, next fiscal year $454.23MFY2026 $4.27BFY2026 $1.82BFY2026
Revenue growth, next FY +16.3%FY2026 +53.1%FY2026 +105.0%FY2026
Revenue growth, the year after +3.4% +34.8% +27.4%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAMBAMPWRSIMO
Held by institutions 81.7% 96.9% 72.4%
Institutions holding 337 1,246 380
Change in shares held, QoQ -1.5% +3.2% -9.8%
Institutions buying 203 641 223
Institutions selling 89 459 131
Buyers to sellers 2.28 1.40 1.70

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.

AMBAMPWRSIMO
AMBA 1.00 0.55 0.34
MPWR 0.55 1.00 0.51
SIMO 0.34 0.51 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, AMBA, MPWR and SIMO?

Monolithic Power Systems (MPWR) is the largest by market capitalisation: Ambarella (AMBA) $2.96B, Monolithic Power Systems (MPWR) $59.55B, Silicon Motion Technology (SIMO) $6.85B.

Which company is growing faster?

Monolithic Power Systems (MPWR) grew revenue fastest over the trailing twelve months: Ambarella (AMBA) +20.0%, Monolithic Power Systems (MPWR) +28.7%.

Which company is more profitable?

Monolithic Power Systems (MPWR) has the highest net margin (Ambarella (AMBA) -13.5%, Monolithic Power Systems (MPWR) 24.5%).

Which stock has performed better?

Over the past year Silicon Motion Technology (SIMO) returned the most: Ambarella (AMBA) -22.4%, Monolithic Power Systems (MPWR) +9.7%, Silicon Motion Technology (SIMO) +98.3%. Over five years, Silicon Motion Technology (SIMO) compounded fastest (Ambarella (AMBA) -18.8%/yr, Monolithic Power Systems (MPWR) +17.1%/yr, Silicon Motion Technology (SIMO) +24.0%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Silicon Motion Technology (SIMO) has the highest dividend yield: Monolithic Power Systems (MPWR) 0.62%, Silicon Motion Technology (SIMO) 0.98%. Ambarella (AMBA) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Monolithic Power Systems (MPWR) has been the steadiest (Ambarella (AMBA) 74.4%, Monolithic Power Systems (MPWR) 55.0%, Silicon Motion Technology (SIMO) 84.4%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, AMBA, MPWR and SIMO?

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