Quest Diagnostics Inc vs Monolithic Power Systems Inc — how do they compare? Quest Diagnostics Inc trades at $237.51 (market cap $26.21B), while Monolithic Power Systems Inc trades at $1,424 (market cap $68.90B). The key difference: Monolithic Power Systems Inc is far larger — about 2.6× Quest Diagnostics Inc's market cap, and Quest Diagnostics Inc pays the higher dividend (1.45%). Which is the better fit depends on your goals.
| DGX | MPWR | |
|---|---|---|
Market Cap | $26.21B | $68.90B |
Sector | Health | Utilities |
52-Week High | $238.50 | $1.69K |
52-Week Low | $173.49 | $820.74 |
Enterprise Value | $31.97B | $67.51B |
Dividend Yield | 1.45% | 0.57% |
Signals from Pluang's Aura AI — not financial advice
Quest Diagnostics (DGX) trades at $237.24, down 0.16% on the day, with a bullish technical signal from moving averages. The company reported strong Q2 2026 earnings, beating estimates with EPS of $3.12 and raising its full-year outlook, driven by robust testing demand. Revenue grew to $11.04B in 2025, with net income of $992M, though margins face pressure from lower-margin deals and rising costs.
The outlook is positive due to raised guidance and AI integration enhancing efficiency, but risks include debt levels and margin compression. Analysts maintain a cautious buy stance with a $249.50 price target, indicating modest upside potential from current levels amid competitive and cost challenges.
MPWR is trading at $1,437.94, up 4.12% today, reflecting strong momentum after recent earnings beats. The stock shows a bullish technical trend with support at $1,386 and resistance at $1,425. Fundamentally, Q2 2026 revenue surged to $980.6M, driven by 164.3% growth in Enterprise Data, with net income margin expanding to 24.5%. Analyst sentiment is overwhelmingly positive, with 88% recommending Buy and a consensus price target of $1,870.
Outlook remains favorable given robust AI-driven demand and upward earnings revisions, but risks include high valuation multiples (P/E 85.55) and potential double-ordering concerns. The stock offers growth exposure but requires monitoring of execution and competitive pressures in the semiconductor sector.
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 →