SiTime Corporation vs United Microelectronics Corp — how do they compare? SiTime Corporation trades at $624 (market cap $19.42B), while United Microelectronics Corp trades at $23.09 (market cap $58.02B). The key difference: United Microelectronics Corp is far larger — about 3× SiTime Corporation's market cap, and United Microelectronics Corp pays a 1.76% dividend while SiTime Corporation pays none. Which is the better fit depends on your goals — on Pluang, investors hold SiTime Corporation for 18 Days and United Microelectronics Corp for 42 Days on average.
| SITM | UMC | |
|---|---|---|
Market Cap | $19.42B | $58.02B |
Volume | 360,307 | 11,897,809 |
Sector | Technology | Technology |
52-Week High | $901.60 | $28.02 |
52-Week Low | $252.76 | $7.02 |
Typical Hold Time | 18 Days | 42 Days |
Enterprise Value | $18.82B | $55.10B |
Dividend Yield | — | 1.76% |
Signals from Pluang's Aura AI — not financial advice
SITM is trading at $665.16, down 6.46% over the past 24 hours, with a bullish technical signal supported by moving averages. The company shows strong revenue growth momentum with Q2 2026 revenue surging 126.5% year-over-year to $157.43 million, marking its first GAAP profit. Analyst consensus remains strongly positive with 9 buy ratings and a $751.43 price target representing 13% upside potential. Recent institutional activity includes California State Teachers Retirement System increasing its stake by 73,098.9% during the latest quarter.
The outlook remains positive driven by AI infrastructure demand and the Renesas acquisition, though valuation metrics appear elevated with P/E at 1,076 and P/S at 36.9. Key risks include execution challenges in scaling operations and potential market volatility. The stock's current position near recent highs suggests cautious optimism is warranted despite strong growth fundamentals.
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 margin and 21.03% ROE, though revenue growth has moderated from 2022 peaks. Recent earnings beats and a Zacks Strong Buy upgrade (September 17, 2026) highlight positive momentum, while cash flow turned positive in 2025 after two years of outflows.
The stock presents growth potential with expanding AI opportunities and strong 22/28nm demand, but faces risks from semiconductor cycle volatility and competitive pressures. Analyst consensus is mixed with 27% buy ratings versus 20% sell, suggesting cautious optimism amid elevated valuation multiples.
Trailing returns across standard periods
What Pluang investors did over the last 30 days
SiTime Corporation is a leading provider of MEMS-based silicon timing solutions used in various electronic applications. The company’s products, including oscillators, resonators, and clock ICs, are designed to replace traditional quartz-based timing devices, offering superior performance, reliability, and smaller size in harsh environments. SiTime's solutions are adopted across high-growth markets such as 5G, data centers, industrial IoT, and automotive, positioning the company as a key enabler for next-generation electronic systems.
Read more on SITM →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 →