Marsh (MRSH)

The company’s risk and insurance services division includes Marsh, one of the world’s best-known insurance brokers, and Guy Carpenter, a specialist in reinsurance and risk transfer. These businesses advise clients on identifying, quantifying, and transferring risks, while also arranging coverage across areas such as property, casualty, liability, cyber, employee benefits, and catastrophe exposure. Guy Carpenter works closely with insurers and reinsurers, helping them manage capital, underwriting volatility, and large-scale risk portfolios.

Marsh McLennan’s consulting operations are built around Mercer and Oliver Wyman. Mercer focuses on human capital, retirement, health, benefits, and investment-related services, supporting employers as they design workforce and pension strategies. Oliver Wyman provides management consulting and economic advisory services, with expertise across financial services, transportation, healthcare, energy, and other industries.

A significant share of Marsh McLennan’s revenue is generated outside the United States, reflecting the global nature of its client base and the cross-border complexity of modern risk management. The company is distinctive for combining insurance broking, reinsurance expertise, workforce consulting, and strategic advisory under one umbrella, giving it a broad view of the risks and operational challenges facing organizations worldwide.