FTSE 100
a.k.a. Footsie, UK100
The UK's main stock index, tracking the 100 largest companies on the London Stock Exchange by market value.
In plain English
The UK's main stock index, tracking the 100 largest companies on the London Stock Exchange by market value.
The FTSE 100, nicknamed the 'Footsie', is heavy in global firms like oil majors, miners, banks and drug makers. Most of their earnings come from abroad.
That creates an odd link: when the pound falls, the index often rises, because overseas earnings are worth more in pounds.
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