Quest Diagnostics Inc vs Comfort Systems USA Inc — how do they compare? Quest Diagnostics Inc trades at $205.09 (market cap $22.80B), while Comfort Systems USA Inc trades at $1,704.78 (market cap $62.49B). The key difference: Comfort Systems USA Inc is far larger — about 2.7× 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 | FIX | |
|---|---|---|
Market Cap | $22.80B | $62.49B |
Sector | Health | Technology |
52-Week High | $216.02 | $2.07K |
52-Week Low | $166.42 | $532.14 |
Enterprise Value | $28.82B | $61.78B |
Dividend Yield | 1.67% | 0.15% |
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.
Comfort Systems USA (FIX) trades at $1,732.03, down 1.37% on the day, amid a bearish technical signal despite strong fundamental performance. The company has consistently beaten earnings expectations with Q1 2026 EPS of $10.51 versus $6.81 expected, driven by robust revenue growth and a 12.07% net income margin. Recent news highlights the company's expansion in modular capabilities and leadership in AI infrastructure demand, with a record backlog supporting future growth.
The stock presents a compelling growth story with strong earnings momentum and analyst consensus pointing to significant upside (price target $2,100), but faces risks from execution challenges on its record backlog and premium valuation multiples (P/E 51.24). Investors should weigh the company's solid cash flow generation and market position against technical weakness and high expectations.
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 →Comfort Systems USA is a premier provider of mechanical and electrical contracting services. It specializes in HVAC, plumbing, and energy management solutions for commercial and industrial facilities.
Read more on FIX →