Aon tops reinsurance broker ranking on 2024 revenues, but Guy Carpenter ahead in 2025

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Reinsurance News - Sep 07, 2025

Our ranking of the world’s largest reinsurance brokers reveals that, based on revenues, Aon Reinsurance Solutions led the way in 2024, however, Guy Carpenter, the reinsurance broking arm of Marsh McLennan, is ahead in 2025. With revenues of $2.656 billion, Aon Reinsurance Solutions ranked as t...

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