FTSE 100

The Financial Times Stock Exchange 100 Index, commonly called the "Footsie," which tracks the 100 largest companies listed on the London Stock Exchange by market capitalization. It is the benchmark index for the UK equity market, similar in function to the S&P 500 in the U.S. or the DAX in Germany. Because many FTSE 100 constituents earn revenue globally, the index is heavily influenced by the strength of the British pound.