The catastrophe models carriers relied on for decades are being revised at a pace the industry has never seen before.
Accumulated loss experience from recent wildfire, flood, and severe convective storm seasons has exposed meaningful gaps in older probabilistic models -- particularly around secondary perils that were previously underweighted. Modeling vendors have responded with more frequent updates and supplementary modules for previously under-modeled risks.
For carriers, the operational challenge is managing portfolio decisions across model transition periods. When a new cat model is released, a portfolio that looked comfortable under the prior version may show materially different risk concentrations under the new one.
Carriers with strong actuarial and catastrophe management teams that can evaluate model transitions rigorously -- rather than accepting outputs uncritically -- are making better capital allocation decisions as a result.
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