Quest Diagnostics Inc vs Comfort Systems USA Inc — how do they compare? Quest Diagnostics Inc trades at $237.51 (market cap $26.23B), while Comfort Systems USA Inc trades at $1,677.95 (market cap $58.94B). The key difference: Comfort Systems USA Inc is far larger — about 2.2× 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 | FIX | |
|---|---|---|
Market Cap | $26.23B | $58.94B |
Sector | Health | Technology |
52-Week High | $238.50 | $2.07K |
52-Week Low | $173.49 | $680.86 |
Enterprise Value | $31.99B | $57.42B |
Dividend Yield | 1.45% | 0.21% |
Signals from Pluang's Aura AI — not financial advice
Quest Diagnostics (DGX) trades at $238.35, down slightly by 0.06% today, but maintains a bullish technical trend with strong earnings momentum, having beaten EPS estimates in the last three quarters. Revenue grew to $11.04 billion in 2025, with net income reaching $992 million, and the company raised its 2026 outlook amid surging testing demand. Analyst consensus is a Buy with a $249.50 price target, though valuation multiples like a P/E of 25.3 suggest premium pricing.
The outlook for DGX is positive due to robust demand for diagnostic services, AI integration, and partnerships driving growth, but risks include margin pressure from lower-margin deals and high debt levels. Investors may find opportunity in sustained earnings beats and dividend payouts, yet should monitor competitive and cost pressures that could affect profitability.
FIX trades at $1,694.55, down 1.11% today, with a bearish technical signal from moving averages and RSI near overbought levels. The company reported strong Q2 2026 earnings, beating estimates with EPS of $12.53 versus $10.45 expected, driven by robust data center demand. Revenue grew to $11.2B in 2026, with net profit margin expanding to 12.77%. Analyst consensus is bullish with a $2,170 price target, though valuation multiples like P/E of 41.22 appear elevated.
Outlook remains positive given record backlog and AI-driven demand, but risks include high execution demands and premium valuation. The stock offers growth exposure to the construction and data center sectors, supported by institutional interest and consistent dividend payments, though investors should monitor capacity constraints and competitive pressures.
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 →