Why was the main contract of sugar futures empty in the past?
A variety will have a contract for several months. As for which month is the main force, there are many factors, such as the growing season of agricultural products and the level of consumption months. Many times, it is also uncertain. A master contract is about to expire. At this time, it is necessary to change the contract. It depends on the number of people who made that contract at that time, and the transaction volume increased, which became the main contract.