STMicroelectronics N.V. (STM) vs United Microelectronics Corporation (UMC)
UMC leads on 12 of 15 compared metrics.
A side-by-side comparison of STMicroelectronics N.V. and United Microelectronics Corporation across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of June 24, 2026. The ● marks the stronger figure on each row (cheaper multiple, higher margin/return).
STM
STMicroelectronics N.V.
$72.43Technology
UMC
United Microelectronics Corporation
$26.20Technology
Total return — STM vs UMC
growth of $100 · last 26ySTM +30.8%UMC +124.3%UMC compounded faster
STM UMC
STM vs UMC: by the numbers
- •UMC is the larger company ($65.35B vs $64.38B market cap).
- •UMC trades at the lower earnings multiple (48.60 vs 452.69 P/E).
- •UMC converts more revenue to profit (20.72% vs 1.17% net margin).
- •UMC grew revenue faster over the past five years (10.42% vs 2.41% CAGR).
- •UMC pays the higher dividend yield (1.84% vs 0.50%).
Which is better, STM or UMC?
Metric tally: STM 3 · UMC 12It depends on what you're optimizing for:
ValueUMC(lower P/E)
GrowthUMC(faster 5Y revenue CAGR)
IncomeUMC(higher dividend yield)
QualityUMC(higher ROIC)
Metrics side by side
Valuation
| Metric | STM | UMC |
|---|---|---|
| P/E ratio | 452.69 | 48.60● |
| P/S ratio | 5.40● | 8.54 |
| P/B ratio | 3.77● | 5.41 |
| PEG ratio | — | 9.27 |
| EV / EBITDA | 29.70 | 17.91● |
| FCF yield | 0.24% | 2.46%● |
Profitability
| Metric | STM | UMC |
|---|---|---|
| Gross margin | 33.84%● | 29.60% |
| Operating margin | 3.54% | 18.85%● |
| Net margin | 1.17% | 20.72%● |
| ROE | 0.81% | 12.74%● |
| ROIC | 0.67% | 7.35%● |
Dividends
| Metric | STM | UMC |
|---|---|---|
| Dividend yield | 0.50% | 1.84%● |
| Payout ratio | 189.47% | 90.81% |
Growth (annualized)
| Metric | STM | UMC |
|---|---|---|
| Revenue CAGR (5Y) | 2.41% | 10.42%● |
| EPS CAGR (5Y) | -31.29% | 4.35%● |
| FCF CAGR (5Y) | -30.04% | 4.51%● |
| Total return CAGR (5Y) | 15.93% | 30.10%● |
Frequently asked
- Which is better, STM or UMC?
- It depends on your goal. value: UMC (lower P/E); growth: UMC (faster 5Y revenue CAGR); income: UMC (higher dividend yield); quality: UMC (higher ROIC). Across all compared metrics, UMC leads 12 to 3.
- Is STM or UMC cheaper?
- On trailing earnings, UMC is cheaper: STM trades at a 452.69 P/E and UMC at 48.60.
- Which has grown faster, STM or UMC?
- Over the past five years, UMC grew revenue faster — STM at a 2.41% CAGR versus UMC at 10.42%.
- Does STM or UMC pay a bigger dividend?
- STM yields 0.50% and UMC yields 1.84% based on trailing dividends and the latest price.
- Is STM or UMC more profitable?
- UMC runs the higher net margin — STM at 1.17% versus UMC at 20.72%.
- Which has been the better investment, STM or UMC?
- Over the past 10-year, UMC delivered the higher annualized total return — STM at 29.23% versus UMC at 35.86%. Past performance doesn't predict future results.
Go deeper
Dig into the metrics
STMicroelectronics P/E ratioUnited Microelectronics P/E ratioSTMicroelectronics dividend yieldUnited Microelectronics dividend yieldSTMicroelectronics ROEUnited Microelectronics ROESTMicroelectronics operating marginUnited Microelectronics operating marginSTMicroelectronics revenue growthUnited Microelectronics revenue growthSTMicroelectronics free cash flowUnited Microelectronics free cash flow
STMicroelectronics & United Microelectronics appear in these rankings
Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified June 24, 2026.