However, the fluctuation range of different kinds of commodity futures is generally limited to 3%, 4% and 5% (of course, there is an expansion system for continuous fluctuations). Why is the fluctuation range of futures set smaller than that of stocks? I think there are three main reasons: 1, and the fluctuation range of commodity prices is much smaller than that of stock prices. We often hear that some stocks have gone up dozens of times and fallen by more than 90%, but it is rare to hear that a commodity has suddenly gone up so sharply and fallen so badly. Although commodities sometimes rise and fall, the range is still relatively small compared with stocks. Every commodity has its lowest value behind it, unlike stocks, which are likely to disappear overnight. Therefore, it is in line with market rules to set the daily limit of commodity futures smaller than that of stocks.