Aon PLC (AON)vsMarsh & McLennan Companies Inc (MMC)
AON
Aon PLC
$358.30
-0.68%
FINANCIAL SERVICES · Cap: $75.65B
MMC
Marsh & McLennan Companies Inc
$182.70
-1.58%
FINANCIAL SERVICES · Cap: $89.82B
Smart Verdict
WallStSmart Research — data-driven comparison
Marsh & McLennan Companies Inc generates 50% more annual revenue ($26.45B vs $17.58B). AON leads profitability with a 22.3% profit margin vs 0.2%. MMC appears more attractively valued with a PEG of 2.00. MMC earns a higher WallStSmart Score of 62/100 (C+).
AON
Buy54
out of 100
Grade: C-
MMC
Buy62
out of 100
Grade: C+
Key Strengths & Concerns
Side-by-side fundamental analysis
Key Strengths
Every $100 of equity generates 40 in profit
Large-cap with strong market position
Keeps 22 of every $100 in revenue as profit
Strong operational efficiency at 23.5%
Large-cap with strong market position
Generating 2.3B in free cash flow
Areas to Watch
2.2% revenue growth
Elevated debt levels
Expensive relative to growth rate
Earnings declined 3.0%
Expensive relative to growth rate
0.1% revenue growth
0.0% earnings growth
Distress zone — elevated risk
Comparative Analysis Report
WallStSmart ResearchBull Case : AON
The strongest argument for AON centers on Return on Equity, Market Cap, Profit Margin. Profitability is solid with margins at 22.3% and operating margin at 23.5%.
Bull Case : MMC
The strongest argument for MMC centers on Market Cap, Free Cash Flow.
Bear Case : AON
The primary concerns for AON are Revenue Growth, Debt/Equity, PEG Ratio. Debt-to-equity of 1.57 is elevated, increasing financial risk.
Bear Case : MMC
The primary concerns for MMC are PEG Ratio, Revenue Growth, EPS Growth. Thin 0.2% margins leave little buffer for downturns.
Key Dynamics to Monitor
MMC carries more volatility with a beta of 0.75 — expect wider price swings.
AON is growing revenue faster at 2.2% — sustainability is the question.
MMC generates stronger free cash flow (2.3B), providing more financial flexibility.
Monitor INSURANCE BROKERS industry trends, competitive dynamics, and regulatory changes.
Bottom Line
MMC scores higher overall (62/100 vs 54/100). Both earn "Buy" and "Buy" ratings respectively — the choice depends on your investment horizon and risk tolerance.
This analysis is generated from publicly available financial data. Not financial advice.
Aon PLC
FINANCIAL SERVICES · INSURANCE BROKERS · USA
Aon plc is a multinational professional services firm that sells a range of financial risk-mitigation products, including insurance, pension administration, and health-insurance plans.
Marsh & McLennan Companies Inc
FINANCIAL SERVICES · INSURANCE BROKERS · USA
Marsh McLennan (formerly known as Marsh & McLennan Companies) is a global professional services firm, headquartered in New York City with businesses in insurance brokerage, risk management, reinsurance services, talent management, investment advisory, and management consulting. Its four main operating companies are Marsh, Guy Carpenter, Mercer, and Oliver Wyman.
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