According to the provisions of CICC, the delivery date of stock index futures is from the contract month to the third Friday. For example, the delivery date of the June contract is June 18. The first delivery date is the delivery date of the May contract. The next one is the June contract.

Previously, people in the industry generally believed that there would be no delivery day effect in the market. Judging from the approaching trend of the 20th date and the continuous decrease of contract positions in May, this judgment is obviously reasonable.

This contract has an agreed final trading day (that is, the date of final performance of the contract, usually the third Friday of the contract month, which will be postponed in case of national legal holidays), and this trading day is the delivery date of the futures index. When the agreed final performance time comes, the buyer and the seller must close the position (terminate the contract) or make delivery (cash settlement). You must close your position on the delivery date.

So if you do, you must pay attention to the delivery date.