新股折价现象的实证分析

Through the cross section analysis of the first day transnormal yields of newly issuing shares in Shanghai Stock Market,the paper tests the applicability in China of the theory of the transcendental uncertain hypothesis of rebating newly issuing shares,the credit standing hypothesis of investment banks,the signal hypothesis and the market atmosphere hypothesis respectively.

投资者意见分歧对盈余公告效应影响的实证研究

从投资者意见分歧的角度对盈余公告效应进行理论解释,借鉴衡量投资者意见分歧的模型对中国股票市场的盈余公告效应进行实证检验,研究结论认为:我国的股票市场表现出了明显的盈余公告效应,投资者意见分歧对盈余公告效应具有很好的解释作用。在研究期内,投资者意见分歧与股票组合的累积异常收益率呈正相关关系。