The so-called main contract refers to the contract with the largest turnover. Because it is the most active contract in the market, basically all speculators are participating in this contract. It is also said that the main contract is the contract with the largest position, because generally speaking, the contract with the largest position is also the contract with the largest turnover.
The difference between futures and stocks is that the life cycle of futures contracts is limited and will not be delivered until after the last trading day of the contracts. The so-called main contract refers to the contract with the largest position. Under normal circumstances, the contract with the largest position has the largest turnover. Because it is the most active contract in the market and the easiest contract to clinch, speculators are basically participating in this contract.
Futures, whose English name is futures, is completely different from spot. Spot is actually a tradable commodity. Futures are mainly not commodities, but standardized tradable contracts based on some popular products such as cotton, soybeans and oil and financial assets such as stocks and bonds. Therefore, the subject matter can be commodities (such as gold, crude oil and agricultural products) or financial instruments.
The delivery date of futures can be one week later, one month later, three months later or even one year later.
A contract or agreement to buy or sell futures is called a futures contract. The place where futures are bought and sold is called the futures market. Investors can invest or speculate in futures.
Futures market first appeared in Europe. As early as ancient Greece and Rome, there were central trading places, bulk barter transactions, and trading activities with the nature of futures trade. The original futures trading was developed from spot forward trading. The first modern futures exchange 1848 was established in Chicago, USA, and 1865 established a standard contract model. In 1990s, China Modern Futures Exchange came into being. There are four futures exchanges in China: Shanghai Futures Exchange, Dalian Commodity Exchange, Zhengzhou Commodity Exchange and China Financial Futures Exchange. The price changes of its listed futures products have a far-reaching impact on related industries at home and abroad.