Compare Aon PLC (AON) vs Quest Diagnostics Inc (DGX) Price & Performance
Price performance (Past 24H)
Key statistics
Key statistics
Aon PLC vs Quest Diagnostics Inc — how do they compare? Aon PLC trades at $353.24 (market cap $75.61B), while Quest Diagnostics Inc trades at $238.03 (market cap $26.21B). The key difference: Aon PLC is far larger — about 2.9× 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.
| AON | DGX | |
|---|---|---|
Market Cap | $75.61B | $26.21B |
Sector | Financials | Health |
52-Week High | $381.26 | $238.50 |
52-Week Low | $308.22 | $173.49 |
Enterprise Value | $90.22B | $31.97B |
Dividend Yield | 0.92% | 1.45% |
Aura AI Summary
Signals from Pluang's Aura AI — not financial advice
Aura AI Summary
Signals from Pluang's Aura AI — not financial advice
AON trades at $356.97, down 0.37% with neutral technical signals. The company shows strong fundamentals with Q2 2026 EPS beating estimates at $3.81 versus $3.80 expected, marking the third consecutive quarterly beat. Revenue growth accelerated to 5% organic in Q2 2026, while margins expanded 70 basis points. Analyst consensus price target stands at $410, representing 15% upside potential from current levels.
AON presents a compelling investment case with consistent earnings outperformance and robust profitability metrics including 44.88% ROE. However, premium valuation multiples and modest organic growth create headwinds. The stock offers 15% upside to consensus targets but requires monitoring of valuation compression risks amid competitive insurance brokerage markets.
Quest Diagnostics (DGX) trades at $237.63, down slightly by 0.3% today, but maintains strong momentum with three consecutive quarterly earnings beats and a raised 2026 outlook. The stock shows bullish technical signals with moving averages supporting upward trends, while fundamentals reveal solid revenue growth to $11.04 billion in 2025 and improving profit margins. Recent news highlights surging testing demand and AI implementation driving operational efficiency.
DGX presents a favorable investment case with analyst consensus price target of $249.50 offering 5% upside potential. Strong testing demand, strategic partnerships, and earnings momentum support growth, though elevated debt levels and margin pressures from lower-margin deals pose moderate risks. The stock's current valuation at 25.21 P/E appears reasonable given growth prospects.
Returns comparison
Trailing returns across standard periods
Returns comparison
Trailing returns across standard periods
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About Aon PLC
Aon is a leading global provider of insurance and reinsurance brokerage and human resource solutions. Its operations are tilted toward its brokerage operations. Headquartered in London, Aon has about 50,000 employees and operations in 120 countries around the world.
Read more on AON →About Quest Diagnostics Inc
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 →
