Willis Re, the reinsurance brokerage and advisory arm of Willis Towers Watson, said the recent wave of mergers and acquisitions in the global reinsurance industry is expected to have a broadly positive impact on ceding companies, as larger, better capitalized reinsurers will emerge without a significant reduction in market competition or available capacity.
Willis Re said the latest consolidation trend comes as many cedants increasingly favor smaller reinsurance groups while seeking greater involvement from individual counterparties.
The company believes the recent transactions support this direction by creating a stronger reinsurance group, a strengthened balance sheet, broader underwriting expertise and a greater ability to deploy capabilities across multiple lines of business.
Willis Re said most deals announced since the end of 2025 involve carriers with established operations in Lloyd’s and Bermuda. The company said buyers are primarily targeting companies with specialized underwriting talent, a diversified inward reinsurance portfolio and strategic access to key reinsurance centers around the world.
Willis Re believes the result is a market made up of larger, more financially resilient reinsurers, rather than buyers with significantly less choice.
Zurich’s £8.1 billion acquisition of Beazley reflects this trend. While the deal is primarily focused on specialty lines, Willis Re noted that Zurich also secured investment in specialty reinsurance categories, including catastrophe and cyber insurance.
Willis Re said the relatively limited overlap between the two companies’ reinsurance portfolios means the cedants continue to retain access to the same markets while benefiting from Zurich’s significantly expanded balance sheet. Willis Re said the deal could enhance Beazley’s ability to offer a larger product line upon future renewals.
Willis Re reached a similar conclusion regarding Starr’s acquisition of IQUW. Willis Re said IQUW has grown into a diversified Bermuda and Lloyd’s reinsurance platform with a strong position in specialist treaty business, including casualty, cyber, marine, aviation and financial businesses.
The company believes the acquisition significantly strengthens Starr’s presence in Bermuda and Lloyd’s, while creating limited overlap in the combined portfolio. Willis Re said the transaction adds scale and capital strength without significantly concentrating the ceded company’s risk.
Willis Re said AIG’s $7 billion strategic investment in Convex also signals a broader return to inward reinsurance growth by large global insurers. Since its launch in 2019, Convex has rapidly expanded its specialty reinsurance business in Bermuda and London, building a portfolio covering property catastrophic, temporary and structural risk business. Willis Re said the arrangement significantly increases AIG’s participation in the global reinsurance market while allowing Convex to continue to operate independently.
Willis Re views Sompo’s acquisition of Aspen as one of the few transactions that could have an adverse impact on the ceding company. Aspen already has a large inward reinsurance portfolio in catastrophe, retrocession and specialty treaty business, while Sompo had existing reinsurance business prior to the acquisition. While Willis Re said the deal creates a stronger, better capitalized reinsurer, it also combines previously competing platforms and may reduce market choice to some extent.
The company said other transactions, including Radian’s acquisition of Inigo and Howard Hughes Holdings’ agreement to acquire Vantage, continue to strengthen the broader model of the specialty reinsurance business by expanding the parent company’s balance sheet.
Willis Re noted that both Inigo and Vantage have written diversified books covering catastrophe, casualty and specialty treaty reinsurance and could benefit from greater underwriting flexibility and increased scale.
Willis Re said the broader impact of the current M&A cycle is not a sharp reduction in the available reinsurance market, but the emergence of larger, more diversified reinsurers able to support cedants with greater insurance scale and stronger financial backing. The company said this is in line with the ongoing trend of buyers maintaining fewer but more substantial reinsurance relationships.
Willis Re also highlighted the strategic partnership announced between Berkshire Hathaway and Tokio Marine Holdings as a significant development for the industry. Under the agreement, National Indemnity, a subsidiary of Berkshire Hathaway, acquired a 2.49% stake in Tokio Marine Holdings for US$1.8 billion, with the two groups confirming plans to collaborate on reinsurance activities, investments and potential future acquisitions. Willis Re said the partnership brings together two global insurance groups with existing extensive reinsurance operations and significant financial resources.
While Willis Re does not expect the collaboration to result in consolidation between underwriting platforms, the company believes it could become an influential force in future reinsurance consolidation and capital deployment.
The company said the relationship is likely to continue to be closely watched by cedants and market participants as competitive dynamics in the global reinsurance industry continue to evolve.