STM vs UMC Stock Comparison

STMicroelectronics and United Microelectronics Prices as of Oct 28, 2026 Peers: Industry group
STM STMicroelectronics N.V.
$48.54 -8.0% 1M +92.5% 1Y
Market cap
$43.14B
P/E
93.0x
Revenue (TTM)
$13.10B
Div. yield
0.74%
Semiconductor Manufacturing Technology
1 win
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
10 wins

Head to Head

11 decided of 12

United Microelectronics leads on 10 of the 12 questions below (United Microelectronics 10, STMicroelectronics 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionSTMUMCLeader
Larger companyMarket capitalisation $43.14B $47.43B UMC
Cheaper on earningsLower P/E, profitable companies only 93.0x 17.4x UMC
Cheaper on forward earningsLower price / next fiscal year consensus EPS 37.6x 17.1x UMC
Faster revenue growthRevenue growth, trailing twelve months +10.5% +87.7% UMC
More profitableNet margin, trailing twelve months 3.6% 18.7% UMC
Better return on capitalReturn on invested capital 3.9% 11.6% UMC
Less leveragedLower net debt / EBITDA — -1.0x –
Higher dividend yieldTrailing dividend yield 0.74% 2.12% UMC
Better 1-year returnPrice return, last 12 months +92.5% +146.9% UMC
Better 5-year returnAnnualised price return, 5 years +0.4%/yr +12.9%/yr UMC
Less volatileAnnualised volatility, 1 year 60.2% 64.5% STM
Higher overall scoreMean of the five percentile scores vs peers 40/100 80/100 UMC

Percentile Scorecard

STMUMC

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

AxisSTMUMC
Valuation 79 #21 of 94 93 #8 of 94
Growth 11 #82 of 92 79 #20 of 92
Profitability 38 #56 of 90 73 #25 of 90
Financial Health 40 #60 of 99 66 #34 of 99
Shareholder Returns 32 #50 of 73 89 #9 of 73
Overall 40 80
  • STM ranked among 103 companies in Semiconductors
  • UMC ranked among 103 companies in Semiconductors

Price Performance

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

Returns

PeriodSTMUMCSPY
1 month -8.0%-21.0% +0.9%
3 months +0.3%+10.1% +5.9%
6 months -7.8%+47.8% +8.5%
Year to date +87.1%+139.7% +13.3%
1 year +92.5%+146.9% +12.4%
3 years +22.6%+166.5% +88.1%
3 years, per year +7.0%+38.7% +23.5%
5 years +1.9%+83.4% +68.2%
5 years, per year +0.4%+12.9% +11.0%
10 years +427.0%+907.5% +263.4%
10 years, per year +18.1%+26.0% +13.8%

Risk

MeasureSTMUMCSPY
Volatility, 1Y 60.2%64.5% 12.7%
Downside volatility, 1Y 61.2%56.8% 12.7%
Beta vs S&P 500, 1Y 2.871.78 1.00
Return / volatility, 1Y 1.542.28 0.98
Max drawdown, 5Y -67.2%-57.3% -25.4%
From 52-week high -39.3%-32.7% -0.9%
52-week high $79.91$28.01 $779.14
52-week low $21.20$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.

MultipleSTMUMC
P/E now vs peer median 93.0xmedian 46.0x 17.4xmedian 46.0x
P/S now vs peer median 3.3xmedian 7.9x 3.4xmedian 7.9x
EV/EBITDA now vs peer median —median 28.3x 11.6xmedian 28.3x
P/FCF now vs peer median —median 41.4x 21.7xmedian 41.4x
P/B now vs peer median 2.3xmedian 4.6x 3.2xmedian 4.6x
PEG now vs peer median -1.78median 2.30 2.74median 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 monthsSTMUMC
Revenue $13.10B $14.11B
Gross profit $4.49B $2.67B
Operating income $804.00M $1.81B
Net income -$33.00M $2.64B
Free cash flow – $2.19B
R&D $2.11B $595.72M
EPS (diluted) $0.50 $1.07
Cash & equivalents $3.10B $4.48B
Total debt $1.91B $781.92M
Shares (diluted) 923.05M 2.47B
Enterprise value $29.41B $31.80B

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
MetricSTMUMC
P/E 93.0x 17.4x
P/FCF – 21.7x
P/Operating cash flow – 12.6x
P/S 3.3x 3.4x
P/B 2.3x 3.2x
P/Tangible book 2.6x 3.2x
EV/EBITDA – 11.6x
EV/EBIT 50.7x 24.2x
EV/Revenue 3.1x 3.1x
EV/FCF – 20.0x
EV/Operating cash flow – 11.6x
PEG (3Y EPS CAGR) -1.78 2.74

Growth

14 metrics
MetricSTMUMC
Revenue growth (1Y) 10.5% 87.7%
Revenue CAGR (3Y) 0.2% 22.9%
Gross profit growth (1Y) 5.7% 22.7%
Gross profit CAGR (3Y) -18.8% -2.4%
Operating income growth (1Y) 28.0% 29.9%
Operating income CAGR (3Y) -45.3% -6.7%
Net income growth (1Y) -106.8% 97.8%
Net income CAGR (3Y) -26.2% 5.5%
EPS growth (1Y) -27.2% 97.8%
EPS CAGR (3Y) -52.3% 6.4%
Operating cash flow growth (1Y) – 19.0%
Operating cash flow CAGR (3Y) – 5.1%
Free cash flow growth (1Y) – 410.9%
Free cash flow CAGR (3Y) – 11.3%

Profitability

14 metrics
MetricSTMUMC
Gross margin 34.3% 18.9%
EBITDA margin – 26.7%
Operating margin 6.1% 12.8%
Pretax margin 5.7% 30.5%
Net margin 3.6% 18.7%
FCF margin – 15.5%
Operating cash flow margin – 26.7%
Return on equity 2.6% 18.4%
Return on assets 1.8% 12.5%
Return on invested capital 3.9% 11.6%
Return on capital employed 3.7% 9.6%
Asset turnover 0.5x 0.7x
Cash conversion (OCF / net income) – 1.4x
Stock comp / revenue 1.4% 0.1%

Financial Health

11 metrics
MetricSTMUMC
Debt / assets 6.7% 3.7%
Debt / equity 0.1x 0.1x
Net debt / EBITDA – -1.0x
Debt / FCF – 0.4x
Liabilities / assets 33.6% 30.3%
Equity / assets 66.4% 69.7%
Interest coverage – 33.0x
Current ratio 2.5x 3.3x
Quick ratio 1.5x 2.6x
Cash ratio 0.8x 2.0x
Altman Z-score 4.25 –

Shareholder Returns

7 metrics
MetricSTMUMC
Dividend yield 0.7% 2.1%
Net buyback yield -0.7% 0.6%
Shareholder yield 0.0% 2.7%
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.

ConsensusSTMUMC
Forward P/E 37.6xFY2026 17.1xFY2026
EPS, next fiscal year $1.29FY2026 $1.10FY2026
EPS growth, next FY +143.4%FY2026 +107.5%FY2026
EPS growth, the year after +103.1% -2.7%
Revenue, next fiscal year $13.79BFY2026 $8.52BFY2026
Revenue growth, next FY +16.9%FY2026 +12.1%FY2026
Revenue growth, the year after +18.2% +24.7%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersSTMUMC
Held by institutions 19.0% 7.1%
Institutions holding 603 362
Change in shares held, QoQ +57.4% +3.2%
Institutions buying 429 220
Institutions selling 108 109
Buyers to sellers 3.97 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.

STMUMC
STM 1.00 0.42
UMC 0.42 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, STM and UMC?

United Microelectronics (UMC) is the largest by market capitalisation: STMicroelectronics (STM) $43.14B, United Microelectronics (UMC) $47.43B.

Which stock is cheaper, STM and UMC?

United Microelectronics (UMC) trades on the lowest price-to-earnings ratio (STMicroelectronics (STM) 93.0x, United Microelectronics (UMC) 17.4x). On next year's consensus earnings, United Microelectronics (UMC) is cheapest (STMicroelectronics (STM) 37.6x, United Microelectronics (UMC) 17.1x). 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: STMicroelectronics (STM) +10.5%, United Microelectronics (UMC) +87.7%.

Which company is more profitable?

United Microelectronics (UMC) has the highest net margin (STMicroelectronics (STM) 3.6%, United Microelectronics (UMC) 18.7%). On return on invested capital, United Microelectronics (UMC) leads (STMicroelectronics (STM) 3.9%, United Microelectronics (UMC) 11.6%).

Which stock has performed better?

Over the past year United Microelectronics (UMC) returned the most: STMicroelectronics (STM) +92.5%, United Microelectronics (UMC) +146.9%. Over five years, United Microelectronics (UMC) compounded fastest (STMicroelectronics (STM) +0.4%/yr, United Microelectronics (UMC) +12.9%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

United Microelectronics (UMC) has the highest dividend yield: STMicroelectronics (STM) 0.74%, United Microelectronics (UMC) 2.12%.

Which stock is riskier?

By one-year price volatility, STMicroelectronics (STM) has been the steadiest (STMicroelectronics (STM) 60.2%, United Microelectronics (UMC) 64.5%). Volatility measures how widely the price swings, not the risk of the business.

Do STM and UMC move together?

Their daily returns over the past year have a correlation of 0.42, a moderate positive relationship. Holding both diversifies more than two closely linked stocks would.

Which is the better stock, STM 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 10. 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.