Caterpillar Inc vs Quest Diagnostics Inc — how do they compare? Caterpillar Inc trades at $938.27 (market cap $429.89B), while Quest Diagnostics Inc trades at $205.45 (market cap $22.80B). The key difference: Caterpillar Inc is far larger — about 18.9× 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.
| CAT | DGX | |
|---|---|---|
Market Cap | $429.89B | $22.80B |
Sector | Industrials | Health |
52-Week High | $1.06K | $216.02 |
52-Week Low | $404.64 | $166.42 |
Enterprise Value | $468.88B | $28.82B |
Dividend Yield | 0.7% | 1.67% |
Signals from Pluang's Aura AI — not financial advice
Caterpillar (CAT) trades at $933.34, down 2.0% on the day but up 51% year-to-date, reflecting strong momentum from AI-driven infrastructure demand. The company has beaten earnings estimates for three consecutive quarters, with Q1 2026 EPS of $5.54 surpassing expectations by 19%. Valuation metrics remain elevated with a P/E of 46.39 and P/S of 6.18, while profitability remains robust with a 13.33% net margin and 51.35% ROE. Technical indicators show neutral signals with support at $922 and resistance at $943.
Outlook remains positive with analyst consensus pointing to $1,020 price target (9% upside) and 55% buy ratings. Key opportunities include AI data center power demand generating $10.2B in generator sales, while risks include elevated valuation and cyclical exposure to economic conditions. The company's 32nd consecutive dividend increase expected in June supports income investors.
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.
Trailing returns across standard periods
Caterpillar Inc. designs, manufactures, and markets construction, mining, and forestry machinery. The Company also manufactures engines and other related parts for its equipment, and offers financing and insurance. Caterpillar distributes its products through a worldwide organization of dealers.
Read more on CAT →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 →