ARM vs UMC vs AMBA Stock Comparison

Arm Holdings, United Microelectronics and Ambarella Prices as of Oct 28, 2026 Peers: Industry group
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ARM Arm Holdings Plc /Uk
$235.90 -16.7% 1M +36.3% 1Y
Market cap
$250.29B
P/E
239.7x
Revenue (TTM)
$5.16B
Div. yield
–
Semiconductor Design Technology
2 wins
UMC United Microelectronics Corp
$18.84 -21.0% 1M +146.9% 1Y
Market cap
$47.43B
P/E
17.4x
Revenue (TTM)
$14.11B
Div. yield
2.12%
Semiconductor Manufacturing Technology
7 wins
AMBA Ambarella Inc
$66.27 -3.5% 1M -23.2% 1Y
Market cap
$2.93B
P/E
–
Revenue (TTM)
$417.80M
Div. yield
–
Semiconductor Design Technology

Head to Head

9 decided of 12

United Microelectronics leads on 7 of the 12 questions below (United Microelectronics 7, Arm Holdings 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionARMUMCAMBALeader
Larger companyMarket capitalisation $250.29B $47.43B $2.93B ARM
Cheaper on earningsLower P/E, profitable companies only 239.7x 17.4x -51.8x UMC
Cheaper on forward earningsLower price / next fiscal year consensus EPS 114.0x 17.1x 86.1x UMC
Faster revenue growthRevenue growth, trailing twelve months +25.1% +87.7% +20.0% UMC
More profitableNet margin, trailing twelve months 20.2% 18.7% -13.5% ARM
Better return on capitalReturn on invested capital — 11.6% — –
Less leveragedLower net debt / EBITDA — -1.0x — –
Higher dividend yieldTrailing dividend yield — 2.12% — –
Better 1-year returnPrice return, last 12 months +36.3% +146.9% -23.2% UMC
Better 5-year returnAnnualised price return, 5 years — +12.9%/yr -18.6%/yr UMC
Less volatileAnnualised volatility, 1 year 78.9% 64.5% 74.4% UMC
Higher overall scoreMean of the five percentile scores vs peers 62/100 80/100 40/100 UMC

Percentile Scorecard

ARMUMCAMBA

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

AxisARMUMCAMBA
Valuation 8 #87 of 94 93 #8 of 94 34 #62 of 94
Growth 88 #12 of 92 79 #20 of 92 51 #46 of 92
Profitability 78 #21 of 90 73 #25 of 90 27 #66 of 90
Financial Health 77 #24 of 99 66 #34 of 99 59 #41 of 99
Shareholder Returns – 89 #9 of 73 31 #51 of 73
Overall 62 80 40
  • ARM ranked among 103 companies in Semiconductors
  • UMC ranked among 103 companies in Semiconductors
  • AMBA ranked among 103 companies in Semiconductors

Price Performance

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

Returns

PeriodARMUMCAMBASPY
1 month -16.7%-21.0%-3.5% +0.9%
3 months +4.9%+10.1%-4.2% +5.9%
6 months +17.0%+47.8%+0.5% +8.5%
Year to date +115.8%+139.7%-6.5% +13.3%
1 year +36.3%+146.9%-23.2% +12.4%
3 years +380.5%+166.5%+41.6% +88.1%
3 years, per year +68.8%+38.7%+12.3% +23.5%
5 years —+83.4%-64.3% +68.2%
5 years, per year —+12.9%-18.6% +11.0%
10 years —+907.5%+8.1% +263.4%
10 years, per year —+26.0%+0.8% +13.8%

Risk

MeasureARMUMCAMBASPY
Volatility, 1Y 78.9%64.5%74.4% 12.7%
Downside volatility, 1Y 71.4%56.8%79.6% 12.7%
Beta vs S&P 500, 1Y 3.481.782.61 1.00
Return / volatility, 1Y 0.462.28-0.31 0.98
Max drawdown, 5Y -54.0%-57.3%-81.7% -25.4%
From 52-week high -46.3%-32.7%-30.6% -0.9%
52-week high $439.46$28.01$95.51 $779.14
52-week low $104.55$7.02$48.65 $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.

MultipleARMUMCAMBA
P/E now vs peer median 239.7xmedian 46.0x 17.4xmedian 46.0x -51.8xmedian 46.0x
P/S now vs peer median 48.5xmedian 7.9x 3.4xmedian 7.9x 7.0xmedian 7.9x
EV/EBITDA now vs peer median 212.8xmedian 28.3x 11.6xmedian 28.3x -71.3xmedian 28.3x
P/FCF now vs peer median 124.4xmedian 41.4x 21.7xmedian 41.4x 300.9xmedian 41.4x
P/B now vs peer median 29.0xmedian 4.6x 3.2xmedian 4.6x 4.7xmedian 4.6x
PEG now vs peer median 6.76median 2.30 2.74median 2.30 -2.64median 2.30

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 monthsARMUMCAMBA
Revenue $5.16B $14.11B $417.80M
Gross profit $5.03B $2.67B $244.50M
Operating income $877.00M $1.81B -$62.24M
Net income $1.04B $2.64B -$56.32M
Free cash flow $2.01B $2.19B $9.72M
R&D $2.96B $595.72M $228.69M
EPS (diluted) $0.98 $1.07 $-1.28
Cash & equivalents $3.06B $4.48B $101.85M
Total debt – $781.92M –
Shares (diluted) 1.07B 2.47B 44.01M
Enterprise value $236.00B $31.80B $1.77B

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
MetricARMUMCAMBA
P/E 239.7x 17.4x -51.8x
P/FCF 124.4x 21.7x 300.9x
P/Operating cash flow 119.5x 12.6x 107.0x
P/S 48.5x 3.4x 7.0x
P/B 29.0x 3.2x 4.7x
P/Tangible book 29.8x 3.2x 5.2x
EV/EBITDA 212.8x 11.6x -71.3x
EV/EBIT 281.0x 24.2x -42.6x
EV/Revenue 47.8x 3.1x 6.3x
EV/FCF 122.5x 20.0x 272.9x
EV/Operating cash flow 117.7x 11.6x 97.1x
PEG (3Y EPS CAGR) 6.76 2.74 -2.64

Growth

14 metrics
MetricARMUMCAMBA
Revenue growth (1Y) 25.1% 87.7% 20.0%
Revenue CAGR (3Y) 24.7% 22.9% 12.9%
Gross profit growth (1Y) 25.6% 22.7% 17.4%
Gross profit CAGR (3Y) 25.4% -2.4% 11.3%
Operating income growth (1Y) 14.9% 29.9% 36.9%
Operating income CAGR (3Y) 21.6% -6.7% 18.4%
Net income growth (1Y) 49.4% 97.8% 36.4%
Net income CAGR (3Y) 37.2% 5.5% 16.9%
EPS growth (1Y) 48.7% 97.8% 38.6%
EPS CAGR (3Y) 35.5% 6.4% 19.6%
Operating cash flow growth (1Y) 105.5% 19.0% -47.8%
Operating cash flow CAGR (3Y) 34.7% 5.1% 1.3%
Free cash flow growth (1Y) 121.8% 410.9% -73.7%
Free cash flow CAGR (3Y) 33.3% 11.3% -5.8%

Profitability

14 metrics
MetricARMUMCAMBA
Gross margin 97.5% 18.9% 58.5%
EBITDA margin 22.5% 26.7% -8.9%
Operating margin 17.0% 12.8% -14.9%
Pretax margin 24.5% 30.5% -12.9%
Net margin 20.2% 18.7% -13.5%
FCF margin 39.0% 15.5% 2.3%
Operating cash flow margin 40.6% 26.7% 6.5%
Return on equity 16.3% 18.4% -9.2%
Return on assets 12.6% 12.5% -7.2%
Return on invested capital – 11.6% –
Return on capital employed 9.0% 9.6% -9.6%
Asset turnover 0.5x 0.7x 0.5x
Cash conversion (OCF / net income) 2.0x 1.4x -0.5x
Stock comp / revenue 22.4% 0.1% 21.9%

Financial Health

11 metrics
MetricARMUMCAMBA
Debt / assets – 3.7% –
Debt / equity – 0.1x –
Net debt / EBITDA – -1.0x –
Debt / FCF – 0.4x –
Liabilities / assets 22.9% 30.3% 20.5%
Equity / assets 77.1% 69.7% 79.5%
Interest coverage – 33.0x –
Current ratio 5.3x 3.3x 2.8x
Quick ratio 4.9x 2.6x 2.2x
Cash ratio 3.2x 2.0x 2.0x
Altman Z-score 60.38 – 11.01

Shareholder Returns

7 metrics
MetricARMUMCAMBA
Dividend yield – 2.1% –
Net buyback yield – 0.6% -0.1%
Shareholder yield – 2.7% -0.1%
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.

ConsensusARMUMCAMBA
Forward P/E 114.0xFY2026 17.1xFY2026 86.1xFY2026
EPS, next fiscal year $2.07FY2026 $1.10FY2026 $0.77FY2026
EPS growth, next FY +16.9%FY2026 +107.5%FY2026 +24.2%FY2026
EPS growth, the year after +49.8% -2.7% +40.3%
Revenue, next fiscal year $5.71BFY2026 $8.52BFY2026 $454.23MFY2026
Revenue growth, next FY +16.0%FY2026 +12.1%FY2026 +16.3%FY2026
Revenue growth, the year after +38.7% +24.7% +3.4%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersARMUMCAMBA
Held by institutions 9.3% 7.1% 81.7%
Institutions holding 955 362 337
Change in shares held, QoQ +12.4% +3.2% -1.5%
Institutions buying 593 220 203
Institutions selling 257 109 89
Buyers to sellers 2.31 2.02 2.28

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.

ARMUMCAMBA
ARM 1.00 0.46 0.40
UMC 0.46 1.00 0.29
AMBA 0.40 0.29 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, ARM, UMC and AMBA?

Arm Holdings (ARM) is the largest by market capitalisation: Arm Holdings (ARM) $250.29B, United Microelectronics (UMC) $47.43B, Ambarella (AMBA) $2.93B.

Which stock is cheaper, ARM, UMC and AMBA?

United Microelectronics (UMC) trades on the lowest price-to-earnings ratio (Arm Holdings (ARM) 239.7x, United Microelectronics (UMC) 17.4x, Ambarella (AMBA) -51.8x). On next year's consensus earnings, United Microelectronics (UMC) is cheapest (Arm Holdings (ARM) 114.0x, United Microelectronics (UMC) 17.1x, Ambarella (AMBA) 86.1x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

United Microelectronics (UMC) grew revenue fastest over the trailing twelve months: Arm Holdings (ARM) +25.1%, United Microelectronics (UMC) +87.7%, Ambarella (AMBA) +20.0%.

Which company is more profitable?

Arm Holdings (ARM) has the highest net margin (Arm Holdings (ARM) 20.2%, United Microelectronics (UMC) 18.7%, Ambarella (AMBA) -13.5%).

Which stock has performed better?

Over the past year United Microelectronics (UMC) returned the most: Arm Holdings (ARM) +36.3%, United Microelectronics (UMC) +146.9%, Ambarella (AMBA) -23.2%. Over five years, United Microelectronics (UMC) compounded fastest (United Microelectronics (UMC) +12.9%/yr, Ambarella (AMBA) -18.6%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: United Microelectronics (UMC) 2.12%. Arm Holdings (ARM) and Ambarella (AMBA) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, United Microelectronics (UMC) has been the steadiest (Arm Holdings (ARM) 78.9%, United Microelectronics (UMC) 64.5%, Ambarella (AMBA) 74.4%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, ARM, UMC and AMBA?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, United Microelectronics (UMC) leads on 7. 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.