The price of futures continuous contracts is to draw the K-line from the various prices of contracts with the largest trading volume on that day, that is to say, which contract has the largest trading volume, and the K-line on futures continuous contracts is the K-line diagram of this contract, and the price is also the price with the largest trading volume.
There are also index contracts, which are available in futures market software, but different software is slightly different. The general calculation method is to average the prices of all listed contracts in different months of a certain day with the weight of positions, which is a continuous price. As long as the product does not withdraw from the market, the exchange will issue a new monthly trading contract at a fixed time, so that the price data will be continuous and have the weight of positions, thus ensuring the representativeness of prices! Therefore, when doing futures research, it is more reasonable to take index contracts. Of course, it is also possible to take a continuous contract, because it is equivalent to the most weighted contract in the index contract, and it is still very representative.
There are even three or four contract prices in futures, which are basically based on monthly delivery contracts and three or four-month contract prices. This price may be useful for some varieties, but many varieties are not suitable for judging the price in this way.
In a word, the price selected in futures research must most accurately reflect the actual supply and demand price in the market at that time, otherwise it is easy to make errors.