Compare STMicroelectronics NV (STM) vs United Microelectronics Corp (UMC) Price & Performance
Price performance (Past 24H)
Key statistics
Key statistics
STMicroelectronics NV vs United Microelectronics Corp — how do they compare? STMicroelectronics NV trades at $53.37 (market cap $48.14B), while United Microelectronics Corp trades at $23 (market cap $58.02B). The key difference: United Microelectronics Corp is the larger of the two by market cap, and United Microelectronics Corp pays the higher dividend (1.76%). Which is the better fit depends on your goals — on Pluang, investors hold STMicroelectronics NV for 66 Days and United Microelectronics Corp for 42 Days on average.
| STM | UMC | |
|---|---|---|
Market Cap | $48.14B | $58.02B |
Volume | 9,776,015 | 11,897,809 |
Sector | Technology | Technology |
52-Week High | $79.91 | $28.02 |
52-Week Low | $21.20 | $7.02 |
Typical Hold Time | 66 Days | 42 Days |
Enterprise Value | $45.66B | $55.10B |
Dividend Yield | 0.68% | 1.76% |
Aura AI Summary
Signals from Pluang's Aura AI — not financial advice
Aura AI Summary
Signals from Pluang's Aura AI — not financial advice
STM trades at $56.18, down 4.33% on the day, amid a mixed technical and fundamental backdrop. The stock shows a bullish technical signal with support near $56, but faces headwinds from recent earnings misses and negative net income margins. Revenue has declined from $17.3B in 2023 to $11.8B in 2025, though AI data-center growth offers a potential catalyst, with the company targeting over $2B in AI revenue by 2027 according to Reuters on 2026-09-09.
The outlook is cautiously optimistic, driven by analyst consensus favoring a Buy rating and a $77.31 price target, implying significant upside. However, risks include volatile profitability, high P/E of 101.89, and dependence on cyclical semiconductor demand. Near-term performance hinges on Q3 2026 earnings versus the $0.40 EPS expectation.
United Microelectronics (UMC) trades at $23.31, up 0.52% with a bullish technical signal despite mixed moving averages. The company shows strong profitability with 32.75% net income margin and 21.03% ROE, though revenue growth has slowed from 2022 peaks. Recent earnings beats and positive 2026 projections suggest operational strength, while analyst consensus remains cautious with 53% hold ratings.
UMC presents a mixed outlook with strong fundamentals offset by valuation concerns. The stock's 250% annual gain creates near-term resistance, while projected 2026 earnings growth of 103% offers upside potential. Key risks include semiconductor cyclicality and AI spending volatility, requiring careful position sizing despite intrinsic value estimates near $29.
Returns comparison
Trailing returns across standard periods
Returns comparison
Trailing returns across standard periods
Investor sentiment on Pluang
What Pluang investors did over the last 30 days
Investor sentiment on Pluang
What Pluang investors did over the last 30 days
About STMicroelectronics NV
A merger between Italian firm SGS Microelettronica and the nonmilitary business of Thomson Semiconductors in France formed STMicroelectronics in 1987. STMicro is a leader in a variety of semiconductor products, including analog chips, discrete power semiconductors, microcontrollers, and sensors. STMicro is an especially prominent chip supplier into the industrial and automotive industries.
Read more on STM →About United Microelectronics Corp
Founded in 1980, United Microelectronics is the world's third-largest dedicated chip foundry, with 7% market share in 2021, according to Gartner, after TSMC and GlobalFoundries. UMC's headquarters are in Hsinchu, Taiwan, and it operates 12 fabs in Taiwan, Mainland China, Japan and Singapore, with additional sales offices in Europe, the U.S. and South Korea. UMC features a diverse customer base including Texas Instruments, MediaTek, Qualcomm, Broadcom, Xilinx and Realtek, supplying a wide range of products applied in communications, display, memory, automotive and more. UMC employs about 20,000 people.
Read more on UMC →
