Quest Diagnostics Inc vs United Microelectronics Corp — how do they compare? Quest Diagnostics Inc trades at $205.37 (market cap $22.80B), while United Microelectronics Corp trades at $25.47 (market cap $59.23B). The key difference: United Microelectronics Corp is far larger — about 2.6× Quest Diagnostics Inc's market cap, and United Microelectronics Corp pays the higher dividend (1.73%). Which is the better fit depends on your goals.
| DGX | UMC | |
|---|---|---|
Market Cap | $22.80B | $59.23B |
Sector | Health | Technology |
52-Week High | $216.02 | $28.02 |
52-Week Low | $166.42 | $6.58 |
Enterprise Value | $28.82B | $56.81B |
Dividend Yield | 1.67% | 1.73% |
Signals from Pluang's Aura AI — not financial advice
Quest Diagnostics (DGX) trades at $207.35, showing minimal daily movement with a slight decline of 0.04%. The stock maintains a bullish technical stance with recent earnings beats and analyst consensus pointing to upside potential. Recent developments include New York State approval for Haystack MRD testing and strong momentum across diagnostic channels. Revenue growth accelerated to $11.04 billion in 2025 with consistent profitability margins around 9%.
DGX presents a balanced investment case with 38% analyst buy ratings and a $227.75 price target suggesting 10% upside. The company demonstrates steady revenue growth and operational efficiency, though elevated debt levels and policy risks require monitoring. Second quarter earnings on July 23, 2026, will be crucial for validating current momentum and growth trajectory.
UMC trades at $23.46, down 3.62% over the past day, with a bearish technical signal despite recent earnings beats. The company reported Q1 2026 EPS of $0.20, exceeding expectations of $0.12, and announced a $0.41 dividend payable in August 2026. Revenue grew to $237.55 billion in 2025, though net income margin has declined from 32.1% in 2022 to 16.99% in 2025. Positive developments include mass production of silicon photonics ICs and a new 14nm eHV FinFET platform.
Outlook remains mixed with strong operational cash flow and technological advancements balanced against high valuation multiples and margin compression. Key risks include competitive pressures in semiconductor foundry markets and sensitivity to global economic cycles. Analyst consensus is cautious with 53.3% hold ratings, suggesting limited near-term upside despite solid fundamentals.
Trailing returns across standard periods
Quest Diagnostics is a leading independent provider of diagnostic testing, information, and services in the U.S. The company generates over 95% of its revenue through clinical testing, anatomic pathology, esoteric testing, and substance abuse testing with specimens collected at its national network of roughly 2,300 patient service centers, as well as multiple doctors offices and hospitals. The firm also runs a much smaller diagnostic solutions segment that provides clinical trials testing, risk assessment services, and information technology solutions.
Read more on DGX →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 →