From Traderpedia

Definition: This index includes the 100 largest blue chip UK companies in terms of market capitalisation.

The constituents of the index are updated quarterly.

[edit] History

Launched in January 1984 with a base of 1000, the FTSE 100 largely replaced the existing FT 30 because it is updated constantly in real time, as opposed to hourly.

[edit] See also

• FTSE 250