Largest Wholesale Insurance Brokers 2025. Large brokerages provide a wider range of services than smaller. Am best has ranked the world’s biggest insurance brokers based on 2023 total revenue, with a new number three emerging and three newcomers making the cut.

Brokers were invited to rank their preferred wholesale brokers and mgas across 20 major insurance types, alongside identifying the top insurance products offered by mgas. According to am best’s top global insurance brokers report, published in july 2024, the firm increased its revenue by $2bn (£1.54bn) to total $22.70bn (£17.55bn) last year.