基于指令驱动市场信息模型,从信息不对称角度解释股票市场波动性日内特征的原因。结果表明,股票市场的非对称信息、公开信息和流动性成本是导致中国股票市场波动性具有“L”形日内模式的因素。股票市值越大,非对称信息、公共信息对股票价格波动的影响越低。
Based on the information model of order-driven market, the intraday characteristics of the volatility of Chinese stock market are studied from the viewpoint of asymmetric information. The results show that the L intraday pattern of return volatility of stock market is caused by asymmetric information, public information and liquidity cost. The higher the market value of stocks, the lower the effect of asymmetric information and public information on price volatility.