This paper investigates the price discovery process between the stock index and the stock index futures by impulse respond test,information share model and the common factor decomposition model. The analysis includes the S &P 500 stock indexes,Dow-Jones i是什么意思 This paper investigates the price discovery process between the stock index and the stock index futures by impulse respond test,information share model and the common factor decomposition model. The analysis includes the S &P 500 stock indexes,Dow-Jones i怎么读