Aon financials
$275.90+1.40%
Close Sep 29, 2026 · split-adjustedRevenue
Net income
Income statement & cash flow
| Fiscal year | FY25 Dec 31 | FY24 Dec 31 | FY23 Dec 31 | FY22 Dec 31 | FY21 Dec 31 | FY20 Dec 31 | FY19 Dec 31 | FY18 Dec 31 | FY17 Dec 31 | FY16 Dec 31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Revenue | $17.18B | $15.70B | $13.38B | $12.48B | $12.19B | $11.07B | $11.01B | $10.77B | $10.00B | $9.41B |
| Gross profit | $17.18B | $15.70B | $13.38B | $12.48B | $12.19B | $11.07B | $11.01B | $10.77B | $10.00B | $9.41B |
| Gross margin | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Operating income | $4.34B | $3.83B | $3.79B | $3.67B | $2.09B | $2.78B | $2.17B | $1.54B | $1.06B | $1.81B |
| Net income | $3.69B | $2.65B | $2.56B | $2.59B | $1.25B | $1.97B | $1.53B | $1.13B | $1.23B | $1.40B |
| Net margin | 21.5% | 16.9% | 19.2% | 20.7% | 10.3% | 17.8% | 13.9% | 10.5% | 12.3% | 14.8% |
| Diluted EPS | $17.02 | $12.49 | $12.51 | $12.14 | $5.55 | $8.45 | $6.37 | $4.59 | $4.70 | $5.16 |
| EBITDA | $4.90B | $4.41B | $4.09B | $3.93B | $2.42B | $3.19B | $2.73B | $2.31B | $1.96B | $2.13B |
| Operating cash flow | $3.48B | $3.04B | $3.44B | $3.22B | $2.18B | $3.10B | $3.08B | $1.69B | $734.0M | $2.33B |
| Free cash flow | $3.22B | $2.82B | $3.18B | $3.02B | $2.04B | $2.96B | $2.86B | $1.45B | $551.0M | $2.17B |
| Diluted shares | 217.1M | 212.5M | 205.0M | 213.2M | 226.1M | 233.1M | 240.6M | 247.0M | 260.7M | 270.3M |
Balance sheet
| Period end | Dec 31 | Dec 31 | Dec 31 | Dec 31 | Dec 31 | Dec 31 |
|---|---|---|---|---|---|---|
| Cash & equivalents | $1.20B | $1.08B | $778.0M | $690.0M | $544.0M | $884.0M |
| Short-term investments | $1.60B | $219.0M | $369.0M | $452.0M | $292.0M | $308.0M |
| Total debt | $15.25B | $17.02B | $11.20B | $10.77B | $9.39B | $7.73B |
| Total assets | $50.78B | $48.97B | $33.96B | $32.70B | $31.92B | $32.11B |
| Total liabilities | $41.24B | $42.53B | $34.70B | $33.13B | $30.76B | $28.53B |
| Shareholders' equity | $9.46B | $6.30B | -$742.0M | -$429.0M | $1.16B | $3.58B |
From SEC filings via Massive. Fiscal periods follow the company's own calendar; free cash flow is operating cash flow minus capital expenditure.
Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology