The sehk introduced on march 20 the growth enterprise index ( gei ) to provide investors with a benchmark indicator to assess the movement of the gem . the gei was a market - value weighted index with the market capitalisation of all gem stocks taken into account 创业板指数属市值加权指数，即指数中各成分股的比重是按每家公司的市值来计算，所有在创业板上市的公司均为创业板的成分股。
