FTSE 100

The Financial Times Stock Exchange 100 Index, also called the FTSE 100 Index, FTSE 100, FTSE or, informally, the "Footsie" /ˈfʊtsi/, is one of the United Kingdom's best-known stock market indices and represents the 100 most highly capitalised blue chips listed on the London Stock Exchange.

The index started on 3 January 1984, having been constructed by the London Stock Exchange to better reflect activity on the market. The index would replace the Financial Times' own FT 30 after its public unveiling on 14 February. As late as 10 February, the Stock Exchange referred to the index as 'SE 100', cutting out the Financial Times who had not contributed to its construction. Recognition was ultimately given to the fact that having the FT involved in the official launch possessed value.