RenaissanceRe Holdings

RenaissanceRe was founded in Bermuda in 1993 and built its business on proprietary catastrophe modelling — its REMS system prices property-catastrophe risk that much of the market underwrites on judgement. Alongside its own balance sheet it runs third-party capital vehicles including DaVinci Re, Medici and Vermeer, which let institutional investors take catastrophe risk directly. It roughly doubled in size by acquiring Validus Re from AIG in 2023.