The FTSE 100 Index (UKX) comprises the 100 most highly capitalised blue-chip companies listed on London Stock Exchange. Launched in 1984 as a tradeable index of the top 100 UK companies, it soon after featured in daily television news reports as the most popular gauge of the stock market's health. The FTSE 100 Index was key in helping launch London's new equity index derivatives market. The index's rapid increase from its starting level of 1000 told the story of equities bull market of the 1980s and 1990s.

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Financial calendar for constituents of FTSE100