Aon PLC vs Marsh & McLennan Companies, Inc. — how do they compare? Aon PLC trades at $352.42 (market cap $75.61B), while Marsh & McLennan Companies, Inc. trades at $188.78 (market cap $91.27B). The key difference: Marsh & McLennan Companies, Inc. is the larger of the two by market cap, and Marsh & McLennan Companies, Inc. pays the higher dividend (2.07%). Which is the better fit depends on your goals.
| AON | MRSH | |
|---|---|---|
Market Cap | $75.61B | $91.27B |
Sector | Financials | Financials |
52-Week High | $381.26 | $211.21 |
52-Week Low | $308.22 | $157.32 |
Enterprise Value | $90.22B | $111.95B |
Dividend Yield | 0.92% | 2.07% |
Signals from Pluang's Aura AI — not financial advice
AON trades at $351.56, down 1.52% on the day, with a neutral technical signal and strong fundamentals including a 22.27% net income margin and consistent earnings beats. The stock shows robust profitability with ROE of 44.88% and revenue growth to $17.18B in 2025, though valuation multiples like a P/E of 19.65 and P/S of 4.37 reflect premium pricing. Recent news highlights institutional buying and Q2 2026 earnings beat, with organic revenue growth of 5% supporting positive sentiment.
Outlook remains favorable given earnings momentum and analyst consensus price target of $410, but risks include high valuation sensitivity and debt levels. The stock offers growth exposure with upside potential, balanced by execution risks in a competitive insurance brokerage sector.
Marsh & McLennan (MRSH) trades at $189.13, down 0.87% on the day, with a bullish technical signal and strong fundamental performance. Recent earnings beats in Q2 2026, with EPS of $2.96 versus $2.88 expected, and 6% revenue growth highlight operational strength. The company announced the acquisition of Accel to expand its Midwest insurance reach, signaling strategic growth. Valuation metrics show a P/E of 23.35 and robust profitability with a net income margin of 14.24%.
The outlook remains positive with a consensus price target of $202.89, offering potential upside. Risks include margin pressure from rising expenses and soft P&C pricing. Institutional activity is mixed, with Bank of America reducing its stake while others like Bank of Nova Scotia increased holdings. The stock presents a solid long-term growth opportunity amid cyclical insurance sector headwinds.
Trailing returns across standard periods
Latest headlines on both assets
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 →Marsh & McLennan Companies Inc is a professional services firm that provides advice and solutions in the areas of risk, strategy, and human capital. The company operates through two main segments: risk and insurance services and consulting. In risk and insurance services, the firm offers services via Marsh (an insurance broker) and Guy Carpenter (a risk and reinsurance specialist). The consulting division comprises Mercer (a provider of human resource services) and Oliver Wyman (management and economic consultancy).
Read more on MRSH →