WORLD'S 10 LARGEST INSURANCE BROKERS; 9 Lockton Cos. L.L.C

Lockton Cos. L.L.C. had a solid performance in 2015 and expects more of the same this year, as it stays the course as a private firm. Being able to stay private is very difficult, and Lockton has done something pretty special in that they've grown to $1.3 billion in revenue while maintaining that status. Lockton reported $1.33 billion in 2015 brokerage revenue, up 8.0% from a year earlier, moving it up one notch to No. 9 in Business Insurance's 2016 ranking of the world's largest commercial insurance brokers. Gross revenue increased 7.8% to $1.34 billion. Lockton continues to focus primarily on organic growth, helped by its 95% client retention rate.