ARM vs UMC Stock Comparison

Arm Holdings and United Microelectronics Prices as of Oct 26, 2026 Peers: Industry group
ARM Arm Holdings Plc /Uk
$223.35 -28.0% 1M +30.9% 1Y
Market cap
$236.97B
P/E
227.0x
Revenue (TTM)
$5.16B
Div. yield
–
Semiconductor Design Technology
2 wins
UMC United Microelectronics Corp
$19.18 -21.1% 1M +154.4% 1Y
Market cap
$48.29B
P/E
17.8x
Revenue (TTM)
$13.76B
Div. yield
2.09%
Semiconductor Manufacturing Technology
6 wins

Head to Head

8 decided of 12

United Microelectronics leads on 6 of the 12 questions below (United Microelectronics 6, Arm Holdings 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionARMUMCLeader
Larger companyMarket capitalisation $236.97B $48.29B ARM
Cheaper on earningsLower P/E, profitable companies only 227.0x 17.8x UMC
Cheaper on forward earningsLower price / next fiscal year consensus EPS 107.4x 17.3x UMC
Faster revenue growthRevenue growth, trailing twelve months +25.1% +85.6% UMC
More profitableNet margin, trailing twelve months 20.2% 19.1% ARM
Better return on capitalReturn on invested capital — 10.6% –
Less leveragedLower net debt / EBITDA — -0.9x –
Higher dividend yieldTrailing dividend yield — 2.09% –
Better 1-year returnPrice return, last 12 months +30.9% +154.4% UMC
Better 5-year returnAnnualised price return, 5 years — +12.1%/yr –
Less volatileAnnualised volatility, 1 year 79.0% 64.5% UMC
Higher overall scoreMean of the five percentile scores vs peers 68/100 74/100 UMC

Percentile Scorecard

ARMUMC

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

AxisARMUMC
Valuation 10 #29 of 32 87 #5 of 32
Growth 93 #3 of 30 66 #11 of 30
Profitability 82 #6 of 28 70 #9 of 28
Financial Health 87 #6 of 38 57 #17 of 38
Shareholder Returns – 91 #3 of 23
Overall 68 74
  • ARM ranked among 40 companies in Semiconductors
  • UMC ranked among 40 companies in Semiconductors

Price Performance

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

Returns

PeriodARMUMCSPY
1 month -28.0%-21.1% -0.8%
3 months -16.1%+0.5% +3.5%
6 months +3.5%+64.1% +7.0%
Year to date +104.3%+144.0% +12.2%
1 year +30.9%+154.4% +13.0%
3 years +355.0%+171.3% +86.3%
3 years, per year +65.8%+39.5% +23.1%
5 years —+76.6% +68.6%
5 years, per year —+12.1% +11.0%
10 years —+948.1% +258.0%
10 years, per year —+26.5% +13.6%

Risk

MeasureARMUMCSPY
Volatility, 1Y 79.0%64.5% 12.7%
Downside volatility, 1Y 71.2%56.8% 12.7%
Beta vs S&P 500, 1Y 3.471.79 1.00
Return / volatility, 1Y 0.392.39 1.02
Max drawdown, 5Y -54.0%-57.3% -25.4%
From 52-week high -49.2%-31.5% -1.8%
52-week high $439.46$28.01 $779.14
52-week low $104.55$7.02 $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.

MultipleARMUMC
P/E now vs peer median 227.0xmedian 42.4x 17.8xmedian 42.4x
P/S now vs peer median 46.0xmedian 9.8x 3.5xmedian 9.8x
EV/EBITDA now vs peer median 201.3xmedian 32.0x 12.8xmedian 32.0x
P/FCF now vs peer median 117.8xmedian 32.1x 24.4xmedian 32.1x
P/B now vs peer median 27.5xmedian 4.0x 3.5xmedian 4.0x
PEG now vs peer median 6.40median 2.73 26.03median 2.73

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 monthsARMUMC
Revenue $5.16B $13.76B
Gross profit $5.03B $2.47B
Operating income $877.00M $1.60B
Net income $1.04B $2.62B
Free cash flow $2.01B $1.98B
R&D $2.96B $609.13M
EPS (diluted) $0.98 $1.07
Cash & equivalents $3.06B $3.91B
Total debt – $4.90B
Shares (diluted) 1.07B 2.47B
Enterprise value $222.69B $33.54B

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
MetricARMUMC
P/E 227.0x 17.8x
P/FCF 117.8x 24.4x
P/Operating cash flow 113.2x 13.7x
P/S 46.0x 3.5x
P/B 27.5x 3.5x
P/Tangible book 28.2x 3.5x
EV/EBITDA 201.3x 12.8x
EV/EBIT 265.8x 28.3x
EV/Revenue 45.2x 3.3x
EV/FCF 115.8x 22.8x
EV/Operating cash flow 111.3x 12.8x
PEG (3Y EPS CAGR) 6.40 26.03

Growth

14 metrics
MetricARMUMC
Revenue growth (1Y) 25.1% 85.6%
Revenue CAGR (3Y) 24.7% 18.5%
Gross profit growth (1Y) 25.6% 11.3%
Gross profit CAGR (3Y) 25.4% -10.1%
Operating income growth (1Y) 14.9% 9.6%
Operating income CAGR (3Y) 21.6% -16.5%
Net income growth (1Y) 49.4% 104.8%
Net income CAGR (3Y) 37.2% -0.2%
EPS growth (1Y) 48.7% 116.8%
EPS CAGR (3Y) 35.5% 0.7%
Operating cash flow growth (1Y) 105.5% 17.5%
Operating cash flow CAGR (3Y) 34.7% -3.7%
Free cash flow growth (1Y) 121.8% 447.4%
Free cash flow CAGR (3Y) 33.3% -7.5%

Profitability

14 metrics
MetricARMUMC
Gross margin 97.5% 18.0%
EBITDA margin 22.5% 25.6%
Operating margin 17.0% 11.6%
Pretax margin 24.5% 30.3%
Net margin 20.2% 19.1%
FCF margin 39.0% 14.4%
Operating cash flow margin 40.6% 25.6%
Return on equity 16.3% 19.7%
Return on assets 12.6% 13.2%
Return on invested capital – 10.6%
Return on capital employed 9.0% 9.7%
Asset turnover 0.5x 0.7x
Cash conversion (OCF / net income) 2.0x 1.3x
Stock comp / revenue 22.4% 0.1%

Financial Health

11 metrics
MetricARMUMC
Debt / assets – 3.5%
Debt / equity – 0.1x
Net debt / EBITDA – -0.9x
Debt / FCF – 0.4x
Liabilities / assets 22.9% 33.3%
Equity / assets 77.1% 66.7%
Interest coverage – 30.3x
Current ratio 5.3x 2.2x
Quick ratio 4.9x 1.6x
Cash ratio 3.2x 1.2x
Altman Z-score 57.27 –

Shareholder Returns

7 metrics
MetricARMUMC
Dividend yield – 2.1%
Net buyback yield – –
Shareholder yield – 2.1%
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.

ConsensusARMUMC
Forward P/E 107.4xFY2026 17.3xFY2026
EPS, next fiscal year $2.08FY2026 $1.11FY2026
EPS growth, next FY +17.5%FY2026 +109.4%FY2026
EPS growth, the year after +51.0% -2.7%
Revenue, next fiscal year $5.71BFY2026 $8.55BFY2026
Revenue growth, next FY +16.0%FY2026 +12.5%FY2026
Revenue growth, the year after +38.7% +26.0%

Institutional Ownership

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

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.

ARMUMC
ARM 1.00 0.46
UMC 0.46 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, ARM and UMC?

Arm Holdings (ARM) is the largest by market capitalisation: Arm Holdings (ARM) $236.97B, United Microelectronics (UMC) $48.29B.

Which stock is cheaper, ARM and UMC?

United Microelectronics (UMC) trades on the lowest price-to-earnings ratio (Arm Holdings (ARM) 227.0x, United Microelectronics (UMC) 17.8x). On next year's consensus earnings, United Microelectronics (UMC) is cheapest (Arm Holdings (ARM) 107.4x, United Microelectronics (UMC) 17.3x). 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) +85.6%.

Which company is more profitable?

Arm Holdings (ARM) has the highest net margin (Arm Holdings (ARM) 20.2%, United Microelectronics (UMC) 19.1%).

Which stock has performed better?

Over the past year United Microelectronics (UMC) returned the most: Arm Holdings (ARM) +30.9%, United Microelectronics (UMC) +154.4%. Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: United Microelectronics (UMC) 2.09%. Arm Holdings (ARM) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, United Microelectronics (UMC) has been the steadiest (Arm Holdings (ARM) 79.0%, United Microelectronics (UMC) 64.5%). Volatility measures how widely the price swings, not the risk of the business.

Do ARM and UMC move together?

Their daily returns over the past year have a correlation of 0.46, a moderate positive relationship. Holding both diversifies more than two closely linked stocks would.

Which is the better stock, ARM and UMC?

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 6. 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.