STMicroelectronics N.V. (STM) vs United Microelectronics (NEW) (UMC)
Head-to-head comparison of performance, valuation, growth, profitability and dividends. Prices delayed 15 minutes; data as of Oct 8, 2026.
Summary
United Microelectronics (NEW) (UMC) has outperformed STMicroelectronics N.V. (STM) over the past year, gaining 219.8% versus a gain of 99.5%. Over five years, UMC leads with a +124.4% price change compared with +32.1% for STM. United Microelectronics (NEW) is the larger company by market cap ($57.23 billion vs $47.21 billion), about 1.2 times the size.
On valuation, STMicroelectronics N.V. trades at a lower forward P/E (20.7x vs 26.0x for United Microelectronics (NEW)). United Microelectronics (NEW) offers the higher dividend yield (11.39% vs 0.68%). United Microelectronics (NEW) converts more of its revenue into profit, with a net margin of 21.0% versus 1.4%.
Summary generated from market data by MetaCap's automated system. Methodology
Relative performance
Percent change in share price from the first common trading day shown; excludes dividends.
Head-to-head
| Metric | STM | UMC |
|---|---|---|
| Share price | $52.71 | $22.82 |
| Market cap | $47.21B | $57.23B |
| 1-day change | -6.18% | -2.10% |
| YTD return | +116.58% | +196.56% |
| 1-year return | +99.50% | +219.75% |
| 5-year return | +32.13% | +124.35% |
| P/E ratio (TTM) | — | 21.53 |
| Forward P/E | 20.74 | 25.99 |
| EPS (TTM) | $0.04 | $1.06 |
| Dividend yield | 0.68% | 11.39% |
| Annual dividend | $0.36 | $2.60 |
| Revenue (latest FY) | $11.80B | $7.08B |
| Revenue growth (YoY) | -11.07% | -2.52% |
| Net income (latest FY) | $166.00M | $1.49B |
| Gross margin | 33.89% | 32.57% |
| Operating margin | 1.48% | 22.22% |
| Net margin | 1.41% | 21.00% |
| 52-week high | $81.42 | $28.96 |
| 52-week low | $21.11 | $6.97 |
| Distance from 52-week high | -35.26% | -21.20% |
| Analyst consensus | buy | underperform |
| Avg. price target upside | +42.36% | -41.28% |
| Average volume | 9.56M | 13.03M |
| Shares outstanding | 895.70M | 2.51B |
| Employees | 49,000 | 20,000 |
| Sector | Technology | Technology |
| Industry | Semiconductors | Semiconductors |
Highlighted cells mark the higher value for growth, returns, margins and yield, and the lower value for P/E ratios. Highlighting is a mechanical comparison, not a recommendation.
Key differences
- UMC has outperformed STM by 120.3 percentage points over the past year.
- United Microelectronics (NEW) offers a meaningfully higher dividend yield (11.39% vs 0.68%).
- United Microelectronics (NEW) is more profitable, keeping 21.0 cents of every revenue dollar as net income versus 1.4 cents for STMicroelectronics N.V..
- United Microelectronics (NEW) grew revenue faster in its latest fiscal year (-2.52% vs -11.07%).
About STMicroelectronics N.V.
STM stock →STMicroelectronics N.V., together with its subsidiaries, designs, develops, manufactures, and sells semiconductor products in Europe, the Middle East, Africa, the Americas, and the Asia Pacific. The company operates through Analog products, MEMS and Sensors Group (AM&S); Power and Discrete products (P&D); Embedded Processing (EMP); and RF Products (D&RF) segments.
Technology · Semiconductors · 49,000 employees
About United Microelectronics (NEW)
UMC stock →United Microelectronics Corporation operates as a semiconductor wafer foundry in Taiwan, China, Hong Kong, Japan, Korea, the United States, Europe, and internationally. It manufactures and sells integrated circuits.
Technology · Semiconductors · 20,000 employees
STM vs UMC FAQ
Which is bigger, STMicroelectronics N.V. or United Microelectronics (NEW)?
United Microelectronics (NEW) (UMC) is larger, with a market capitalization of $57.23B compared with $47.21B for STMicroelectronics N.V. (STM).
Which stock has performed better over the past year, STM or UMC?
UMC returned +219.75% over the past 12 months, compared with +99.50% for STM (price return, excluding dividends). Past performance does not predict future results.
Which pays a higher dividend, STMicroelectronics N.V. or United Microelectronics (NEW)?
United Microelectronics (NEW) has the higher yield at 11.39%, compared with 0.68% for STMicroelectronics N.V..
Are STMicroelectronics N.V. and United Microelectronics (NEW) in the same industry?
Yes. Both are classified in the Semiconductors industry within the Technology sector.