Compare
Marsh & McLennan Companies, Inc. vs Aon plc vs Arthur J. Gallagher & Co. vs Willis Towers Watson PLC
| Latest fiscal year | Marsh & McLennan Companies, Inc. MRSH | Aon plc AON | Arthur J. Gallagher & Co. AJG | Willis Towers Watson PLC WTW |
|---|---|---|---|---|
| Year ended | 2025-12-31 | 2025-12-31 | 2025-12-31 | 2025-12-31 |
| Revenue | $26.98B | $17.18B | $13.94B | $9.71B |
| Revenue growth (YoY) | +10.3% | +9.4% | +20.7% | -2.2% |
| Gross margin | n/a | n/a | n/a | n/a |
| Operating margin | 23.1% | 25.3% | n/a | 23.0% |
| Net margin | 15.4% | 21.8% | 10.7% | 16.5% |
| Net income | $4.16B | $3.75B | $1.49B | $1.60B |
| EPS (Diluted) | $8.43 | $17.02 | $5.74 | $16.26 |
| Operating cash flow | $5.29B | $3.48B | $1.93B | $1.77B |
| Free cash flow | $5.00B | $3.22B | n/a | $1.55B |
| Cash & equivalents | $2.69B | $1.20B | n/a | $3.13B |
| Total assets | $58.71B | $50.78B | $70.67B | $29.53B |
| Total liabilities | n/a | $41.24B | $47.32B | $21.48B |
| Shareholders' equity | $15.31B | $9.46B | $23.32B | $7.98B |
| Return on year-end equity | 27.2% | 39.6% | 6.4% | 20.1% |
| Shares outstanding | 485.00M | n/a | 257.00M | n/a |
Revenue, most recent five fiscal years
| Fiscal year | Marsh & McLennan Companies, Inc. | Aon plc | Arthur J. Gallagher & Co. | Willis Towers Watson PLC |
|---|---|---|---|---|
| Latest | $26.98B Ended 2025-12-31 | $17.18B Ended 2025-12-31 | $13.94B Ended 2025-12-31 | $9.71B Ended 2025-12-31 |
| 1 year earlier | $24.46B Ended 2024-12-31 | $15.70B Ended 2024-12-31 | $11.55B Ended 2024-12-31 | $9.93B Ended 2024-12-31 |
| 2 years earlier | $22.74B Ended 2023-12-31 | $13.38B Ended 2023-12-31 | $10.07B Ended 2023-12-31 | $9.48B Ended 2023-12-31 |
| 3 years earlier | $20.72B Ended 2022-12-31 | $12.48B Ended 2022-12-31 | $8.55B Ended 2022-12-31 | $8.87B Ended 2022-12-31 |
| 4 years earlier | $19.82B Ended 2021-12-31 | $12.19B Ended 2021-12-31 | $8.21B Ended 2021-12-31 | $9.00B Ended 2021-12-31 |