ChiNext Index opens lower Tuesday

The ChiNext Index, tracking China's NASDAQ-style board of growth enterprises, opened 0.51 percent lower at 1,399.9 points on Tuesday.

The ChiNext Index, together with the Shenzhen Component Index and the Shenzhen SME (small and medium-sized enterprises) Board Index, makes up the three core indices reflecting the performance of China's stocks listed on the Shenzhen Stock Exchange.

The ChiNext Board, which started trading on Oct. 30, 2009, mainly lists hi-tech companies and those with high growth potential.