Aon Aon is a company specializing in risk management, insurance brokerage, and human capital consulting. | ![]() Marsh Marsh & McLennan is a professional services firm offering advice and solutions in the areas of risk, reinsurance and capital, people and investments, and management consulting. | ![]() JLT Group Holdings JLT Group Holdings (formerly known as Jardine Lloyd Thompson Group) is a multinational corporation providing insurance, reinsurance, and employee benefits-related advice services. | |
Founding Date | Founding Date 1982 | Founding Date 1871 | Founding Date 1997 |
Type | Type Public | Type Public | Type Subsidiary |
Tags | |||
Locations | Locations London, GB HQ Belas, AO Buenos Aires, AR Buenos Aires, AR Córdoba, AR Mar Del Plata, AR Neuquén, AR see more | Locations New York, US HQ Adelaide, AU Barangaroo, AU Brisbane City, AU Cairns City, AU Canberra, AU Docklands, AU see more | Locations London, GB HQ Lancing, GB |
Employees | Employees 60,000 | Employees 95,0006% increase | Employees 4,0811% increase |
Valuation ($) | Valuation ($) 80.2 b | Valuation ($) 109 b | Valuation ($) N/A |
Financial | |||
Revenue (est.) | Revenue (est.) $17.2b (FY, 2025) | Revenue (est.) $27b (FY, 2025) | Revenue (est.) £1.5b (FY, 2018) |
Net income | Net income $3.8b (FY, 2025) | Net income $4.2b (FY, 2025) | Net income £54.3m (FY, 2018) |
Operating ⚠ | |||
Countries | Countries 120 (FY, 2022) | Countries 130 (Q1, 2024) | Countries 135 (FY, 2017) |

Marsh & McLennan is a professional services firm offering advice and solutions in the areas of risk, reinsurance and capital, people and investments, and management consulting.
View company
JLT Group Holdings (formerly known as Jardine Lloyd Thompson Group) is a multinational corporation providing insurance, reinsurance, and employee benefits-related advice services.
View company