The Financial Times Index is a stock price index compiled by the London Stock Exchange and published in the Financial Times. According to the number of sample stocks, the Financial Times Index includes 30 stock indexes, 100 stock indexes and 500 stock indexes respectively. The index calculated on the basis of 30 representative industrial and commercial stocks is widely used in spot investment. It takes 1935 as the base period and makes the base period index 100. In stock index futures trading, the target of futures contract is an index calculated by geometric average method based on 100 stocks in day trading. This index is called "Financial Times-Stock Exchange 100 Index (FTST 100 for short)", with1984 65438+10.00 as the base period, so that the base period index is 100.