在中国证券市场选取大盘环境不同的时段,利用配对技术消除样本系统误差,对大单买卖价格冲击不对称性及该不对称与市场环境之间的关系进行了实证分析。研究表明:中国证券市场的大单买卖价格冲击存在显著不对称性,且该不对称性与市场环境相关。当大盘上涨时,买入订单的价格冲击均比卖出订单大,当大盘下跌时,卖出订单的价格冲击多数比买入订单要大。
Empirical analysis is carried out aiming at elimination of errors in sample system with matching technology, asymmetry in price impact and the relationship between this asymmetry and market condition under different situations in China's securities market. The results indicate that: Asymmetries in Price impact of block trade are significant, which is associated with market condition. In bull market, block purchase has a bigger price impact than block sale, while in bear markets, vice versa.