Focused on the UK equity market, the FTSE (Financial Times Stock Exchange) indices provide key information on the performance of the London Stock Exchange. Developed jointly by the Financial Times and the London Stock Exchange (LSE), the FTSE indices are a series of stock market indices listing different companies according to their market capitalisation. Nicknamed 'the Footsie', the FTSE 100 is the best known of the FTSE indices. It represents the 100 largest companies listed on the LSE in terms of market capitalisation and is widely used as an indicator of the health of the UK markets and the economy in general. In addition to the FTSE 100, there is also the FTSE 250, which groups the 250 companies following on from the FTSE 100, and the FTSE 350, which is the sum of the FTSE 100 and FTSE 250 indices. There are also FTSE indices for small and medium-sized companies, such as the FTSE SmallCap. Although focused on the UK market, the FTSE indices have a significant influence on global financial markets. They are closely watched by international investors as indicators of developed market performance. The FTSE indices are therefore used by investors and fund managers to assess market performance, but also for the creation of financial products such as index funds and ETFs or as benchmarks for active management.