The ICMR (Re)Insurance Specialty Index (RISX) Family are equity benchmarks based on publicly listed companies with underwriting subsidiaries in the Lloyd’s of London insurance market (Lloyd’s). It measures their aggregate equity performance, weighted by their premiums underwritten both at Lloyd’s and globally. The RISX Indices aim to provide an equity benchmark better suited to specialty (re)insurance underwriting than other, more generalist insurance equity indices. The RISX Indices use ICMR’s transparent weighting algorithm based on reported premiums underwritten, which gives a more appropriate mix of underlying risk than a traditional market capitalisation weighting, whilst ensuring sufficient liquidity in the underlying index components. Hence, it provides a benchmark for investments in Lloyd’s.