The reinsurance soft market is real. But it is not the undiscriminating cycle of previous decades, and buyers arriving in Monte Carlo this week should not mistake one for the other.
That is the argument Mat Storr (pictured), newly appointed head of reinsurance at Antares Global, makes ahead of the 68th Rendez-Vous de Septembre. It is his first public commentary since taking charge of the reinsurance portfolio for AMAL Syndicate 1274 in August.
Storr does not dispute the direction of travel. He disputes the assumption that pricing is moving uniformly.
"Pricing is becoming much more differentiated by portfolio quality, loss performance, attachment point, exposure management and the credibility of the data being presented," he said. "Cedants that demonstrate strong underwriting discipline, transparent data and consistent performance should continue to receive favourable support. Those relying on optimistic assumptions, weaker governance or insufficient exposure controls may find reinsurers becoming increasingly selective."
The marine specialty segment illustrates that selectivity. At US$2.8 billion in insured losses, the Baltimore bridge collapse is the largest single marine insurance loss on record. Most of that total is expected to fall on reinsurance and retrocession markets.
Ninety per cent of affected programmes were placed before the reserve increase was disclosed. Pricing implications will not surface until the 2027 marine renewal season. When they do, accounts that performed well and those that did not will face materially different conversations.
"This is not a return to indiscriminate soft-market behaviour," Storr said. "Reinsurers have become much more sophisticated in identifying where they are comfortable reducing rates and where they continue to demand adequate risk-adjusted returns."
Casualty presents a related but distinct dynamic. Rate declines in casualty have been more modest than in property at mid-year 2026.
AM Best has warned that whether casualty pricing gains are keeping pace with loss cost trends "is questionable." Social inflation and unpredictable jury verdicts continue to push claims costs. Reinsurers are not withdrawing from casualty but are pricing it with more scrutiny around attachment points and data quality.
Data centres are among the most significant opportunities Storr flags for the reinsurance market. He argues they come with a structural complexity the market is still working through.
Capital spending by the five largest cloud providers is forecast to exceed US$600 billion in 2026, a 36% annual increase based on Swiss Re Institute data. Roughly 75% of that spend is directly tied to physical AI infrastructure in data centres. Global data centre insurance premiums are expected to rise from US$10.6 billion to US$24.2 billion by 2030.
The risk profile is not straightforward. Fire accounts for only 11% of data centre loss events but drives more than 42% of loss costs, according to FM Global research.
"The key challenge for reinsurers will be understanding portfolio accumulation across multiple classes, sometimes with conflicting rating practices, rather than simply individual risk quality," Storr said. Large data centre facilities are often presented to insurers through separate programmes covering buildings, equipment and power infrastructure. That approach can obscure aggregate exposure within a single reinsurer's book.
"Ultimately data centres are an attractive area for growth where technical expertise, disciplined risk selection and sophisticated accumulation management can create a genuine competitive advantage," he said. "But with the vast capacity required, syndication is necessary with a limited number of markets genuinely in a position to lead."
Zurich secured a US$1 billion data centre construction quota share reinsurance arrangement in 2026 to support its growing portfolio. FM Global backed its FM Intellium clients with a dedicated reinsurance arrangement providing up to US$5 billion in capacity. Both structures illustrate the scale at which lead markets are operating.
Storr's broader framing aligns with other senior voices heading into the Rendez-Vous. Gallagher Re's mid-year assessment said the market is "mid-cycle, not at the bottom." Reinsurers are rewarding cedants who hold the line on deductibles and structural integrity.
Howden Re, meanwhile, warned that global reinsurer economic value added has narrowed materially throughout 2026. A further pricing decline of the same magnitude could push large segments of the industry below their cost of capital by 2027.
"I expect 2027 to be characterised by relative stability if loss activity remains within current expectations," Storr said. "But the market is finely balanced. A meaningful global catastrophe year, further deterioration in ongoing losses and therefore reinsurer returns or a change in investor appetite could quickly alter the tone of the market.
"Success over the next few years will be defined less by who grows the fastest and more by who underwrites consistently, embraces transparency, invests in data and governance, and builds enduring partnerships."
