Alliant Insurance Services, Inc. is one of the largest insurance brokers and consulting firms in the United States, ranking as the nation's fifth-largest by industry measures. Founded in 1925, the company operates from more than 100 offices nationwide and employs over 14,000 people. It has experienced sustained growth, reporting nearly 30% year-over-year increases.
The firm's core business is insurance brokerage and risk management consulting. Its model is structured to position risk management as a tool for client growth rather than a simple cost center. Alliant is a majority employee-owned organization, a structure it says fosters an environment where industry leaders have operational freedom to innovate and challenge conventional approaches.