BC Analysis In order to prevent the risks caused by large price fluctuations, the international market usually sets a daily maximum price fluctuation limit for stock index futures trading. For example, the Nikkei 225 index futures traded in Singapore stipulate that the fluctuation range of the day should not exceed the settlement price of the previous trading day by plus or minus 2000 points. However, not all exchanges adopt daily price fluctuation limits. For example, China's Hang Seng Index Futures and Britain's FT-SE 100 Index Futures have no maximum daily price fluctuation limit.