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Arthur J. Gallagher & vs Aon

Aon is the larger business, with $17.18bn of revenue in fiscal 2025 against $13.94bn for Arthur J. Gallagher & (1.2 times as much). Arthur J. Gallagher & grew faster (20.7% against 9.4%). Aon kept more of each dollar of sales as profit: a net margin of 21.5% against 10.7%. Arthur J. Gallagher & carries less debt relative to equity (57.9% against 164.9%).

Latest fiscal yearArthur J. Gallagher &AJG, 2025AonAON, 2025
Revenue $13.94bn $17.18bn
Revenue growth 20.7% 9.4%
Net income $1.49bn $3.69bn
Operating margin — 25.3%
Net margin 10.7% 21.5%
Return on equity 6.9% 47.8%
Free cash flow $1.78bn $3.22bn
Cash $1.40bn $1.20bn
Total debt $13.51bn $15.42bn
Debt to equity 57.9% 164.9%
Dividend per share $2.60 $2.91
Dividend yield 1.0% 0.9%
Share buybacks — $1.00bn
Employees 72,000 60,000
Market value $70.00bn $70.14bn
Price vs our value range Below our value range Within our value range
Moat score 55 (Moderate) 69 (Moderate)
Insider trades, 12 months 4 buys, 13 sales 7 buys, 11 sales

Each figure is from the company's latest annual report and links to the page it comes from. Fiscal years can end on different dates. Market value and the value verdict use the delayed price shown on the stock pages. Not a recommendation.

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Figures from each company's latest annual report filed with the SEC (10-K or 20-F), as reported, with the fiscal year shown. Not investment advice. How we read filings: methodology.