China's stock index futures closed mixed Friday with the contract for June, the most actively traded, down 0.22percent from the previous trading day to end at 2,765.8 points.

The July contract rose 0.07 percent to 2,791 points. The September contract was up 0.25 percent to 2,825 and the December contract climbed 0.39 percent to 2,864.4.

The stock-index contracts, agreements to buy or sell the Hushen 300 Index at a preset value on an agreed date, are designed to allow investors to bet on and profit from both gains and declines in the market.

The index futures was launched at the China Financial Futures Exchange (CFFEX) and started trading from April 16, 2010. The CFFEX has set the base value for all the four contracts at 3,399 points.