STMicroelectronics N.V. (STM) vs United Microelectronics Corporation (UMC)
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 August 8, 2026. Differences are shown without an overall score or investment verdict.
STM
STMicroelectronics N.V.
$56.10TechnologyAt close: Aug 7, 2026, 4:00 PM ET
UMC
United Microelectronics Corporation
$18.72TechnologyAt close: Aug 7, 2026, 4:00 PM ET
Total return — STM vs UMC
growth of $100 · dividends reinvested · last 26ySTM +69.8%UMC +291.3%UMC compounded faster
STM UMC
STM vs UMC: by the numbers
- •STM is the larger company ($50.07B vs $46.69B market cap).
- •UMC trades at the lower trailing earnings multiple (17.73 vs 110.00 P/E), one valuation lens rather than an overall verdict.
- •UMC converts more revenue to profit (33.14% vs 3.55% net margin).
- •UMC grew revenue faster over the past five years (9.39% vs 1.90% CAGR).
- •UMC pays the higher dividend yield (2.14% vs 0.64%).
Metrics side by side
Valuation
| Metric | STM | UMC |
|---|---|---|
| P/E ratio | 110.00 | 17.73 |
| Forward P/E | 41.97 | N/A |
| P/S ratio | 3.98 | 5.89 |
| P/B ratio | 2.95 | 3.37 |
| PEG ratio | N/A | 4.07 |
| EV / EBITDA | 24.81 | 12.49 |
| FCF yield | 0.71% | 4.00% |
Profitability
| Metric | STM | UMC |
|---|---|---|
| Gross margin | 34.29% | 30.60% |
| Operating margin | 5.23% | 19.71% |
| Net margin | 3.55% | 33.14% |
| ROE | 2.64% | 18.99% |
| ROIC | 0.67% | 7.29% |
Dividends
| Metric | STM | UMC |
|---|---|---|
| Dividend yield | 0.64% | 2.14% |
| Payout ratio | 189.47% | 75.33% |
Growth (annualized)
| Metric | STM | UMC |
|---|---|---|
| Revenue CAGR (5Y) | 1.90% | 9.39% |
| EPS CAGR (5Y) | -31.29% | 4.35% |
| FCF CAGR (5Y) | -18.72% | 6.34% |
| Total return CAGR (5Y) | 6.79% | 16.52% |
Frequently asked
- Which has the lower trailing P/E, STM or UMC?
- UMC has the lower trailing P/E: STM trades at 110.00 and UMC at 17.73. P/E is one valuation measure and does not by itself establish which business is cheaper.
- Which has grown faster, STM or UMC?
- Over the past five years, UMC grew revenue faster — STM at a 1.90% CAGR versus UMC at 9.39%.
- Does STM or UMC pay a bigger dividend?
- STM yields 0.64% and UMC yields 2.14% based on trailing dividends and the latest price.
- Is STM or UMC more profitable?
- UMC runs the higher net margin — STM at 3.55% versus UMC at 33.14%.
- How have STM and UMC total returns compared?
- Over the past 10 years, STM delivered 23.78% and UMC delivered 31.40% annualized total return. 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 August 8, 2026.