China stock index futures open mixed Friday

China's stock index futures opened mixed on Friday, with the contract for settlement in September, the most actively traded, up 0.1 percent to open at 2,356.2 points.

The contract for settlement in October was also up by 0.1 percent to open at 2,361.6. The December contract opened 0.1 percent higher at 2,372.2 points, and the March 2015 contract opened slightly lower at 2,385.4 points.

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

The index futures were 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.