Aon PLC (AON)vsBerkshire Hathaway Inc (BRK-A)
AON
Aon PLC
$328.53
+1.95%
FINANCIAL SERVICES · Cap: $67.89B
BRK-A
Berkshire Hathaway Inc
$733,550.00
+2.11%
FINANCIAL SERVICES · Cap: $1.02T
Smart Verdict
WallStSmart Research — data-driven comparison
Berkshire Hathaway Inc generates 2047% more annual revenue ($375.39B vs $17.49B). AON leads profitability with a 22.5% profit margin vs 19.3%. AON appears more attractively valued with a PEG of 2.55. AON earns a higher WallStSmart Score of 70/100 (B).
AON
Strong Buy70
out of 100
Grade: B
BRK-A
Buy61
out of 100
Grade: C+
Key Strengths & Concerns
Side-by-side fundamental analysis
Key Strengths
Every $100 of equity generates 40 in profit
Strong operational efficiency at 35.8%
Large-cap with strong market position
Keeps 23 of every $100 in revenue as profit
Attractively priced relative to earnings
Earnings expanding 27.1% YoY
Mega-cap, among the largest globally
Reasonable price relative to book value
Earnings expanding 119.6% YoY
Conservative balance sheet, low leverage
Attractively priced relative to earnings
Generating 5.5B in free cash flow
Areas to Watch
Elevated debt levels
Expensive relative to growth rate
Distress zone — elevated risk
4.4% revenue growth
Expensive relative to growth rate
Comparative Analysis Report
WallStSmart ResearchBull Case : AON
The strongest argument for AON centers on Return on Equity, Operating Margin, Market Cap. Profitability is solid with margins at 22.5% and operating margin at 35.8%.
Bull Case : BRK-A
The strongest argument for BRK-A centers on Market Cap, Price/Book, EPS Growth. Profitability is solid with margins at 19.3% and operating margin at 14.3%.
Bear Case : AON
The primary concerns for AON are Debt/Equity, PEG Ratio, Altman Z-Score. Debt-to-equity of 1.56 is elevated, increasing financial risk.
Bear Case : BRK-A
The primary concerns for BRK-A are Revenue Growth, PEG Ratio.
Key Dynamics to Monitor
AON profiles as a mature stock while BRK-A is a value play — different risk/reward profiles.
AON carries more volatility with a beta of 0.71 — expect wider price swings.
AON is growing revenue faster at 6.5% — sustainability is the question.
BRK-A generates stronger free cash flow (5.5B), providing more financial flexibility.
Bottom Line
AON scores higher overall (70/100 vs 61/100), backed by strong 22.5% margins. Both earn "Strong 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.
Berkshire Hathaway Inc
FINANCIAL SERVICES · INSURANCE - DIVERSIFIED · USA
Berkshire Hathaway Inc. is an American multinational conglomerate holding company headquartered in Omaha, Nebraska, United States. The company wholly owns GEICO, Duracell, Dairy Queen, BNSF, Lubrizol, Fruit of the Loom, Helzberg Diamonds, Long & Foster, FlightSafety International, Pampered Chef, Forest River, and NetJets, and also owns 38.6% of Pilot Flying J; and significant minority holdings in public companies Kraft Heinz Company (26.7%), American Express (18.8%), The Coca-Cola Company (9.32%), Bank of America (11.9%), and Apple (6.3%).
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