基于B股对境内投资者开放这一标志性事件,采用VECM-DCC.MVGARCH模型,分别从长期和短期考察中国股票市场一体化的时变特征.研究结果表明:B股对境内投资者开放后,市场在长期意义上从完全分割走向部分整合;且A股市场处在信息传递的主导地位,信息的短期传递和吸收日益迅速.
This study employs VECM-DCC-MVGARCH model to investigate the time-varying characteristics of integration in Chinese stock markets in the long and short run. The empirical results show that after B-Share is open to domestic investors, the markets are integrated to some extent in the long run, while in the short run, A-share market plays an important role in the information transmitting between A-Share and B-Share markets. In addition, the information transmission between A-Share and B-Share markets has been more rapid since B- share is open to domestic investors.