Quest Diagnostics Inc vs Monolithic Power Systems Inc — how do they compare? Quest Diagnostics Inc trades at $206.04 (market cap $22.80B), while Monolithic Power Systems Inc trades at $1,316.84 (market cap $67.62B). The key difference: Monolithic Power Systems Inc is far larger — about 3× Quest Diagnostics Inc's market cap, and Quest Diagnostics Inc pays the higher dividend (1.67%). Which is the better fit depends on your goals.
| DGX | MPWR | |
|---|---|---|
Market Cap | $22.80B | $67.62B |
Sector | Health | Utilities |
52-Week High | $216.02 | $1.69K |
52-Week Low | $166.42 | $711.24 |
Enterprise Value | $28.82B | $66.28B |
Dividend Yield | 1.67% | 0.58% |
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.
Monolithic Power Systems (MPWR) trades at $1,291.38, down 4.54% on the day, amid a bearish technical signal despite strong fundamentals. The stock shows robust profitability with 22.98% net income margin and has beaten earnings estimates for three consecutive quarters. Analyst consensus remains strongly bullish with 88% buy ratings and a $1,760 price target, representing significant upside potential from current levels.
The stock presents a compelling growth opportunity driven by AI infrastructure demand and power semiconductor trends, though elevated valuation multiples and ongoing legal investigations pose risks. Technical indicators suggest near-term weakness, but strong institutional support and consistent earnings performance support the long-term bullish case for investors seeking exposure to semiconductor growth.
Trailing returns across standard periods
Latest headlines on both assets
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 →Monolithic Power Systems, Inc. is a global leader in high-performance, analog, and mixed-signal semiconductors. The company specializes in power management solutions, providing integrated circuits (ICs) for a wide range of applications, including computing, automotive, industrial, and communications. MPWR's proprietary process technology is designed to deliver highly energy-efficient and compact power solutions, positioning the company as a key supplier for the next generation of electronic devices.
Read more on MPWR →