【摘要】 针对"事件研究法"在检验证券市场效率中存在的不足,采用"按质论价法"估算事件对市场的真实影响的测度,并用它测算出《证券法》颁布这一典型事件引起的股票组合的超额收益率,验证了"按质论价法"在市场效率研究中的有用性。更多还原

【Abstract】 In light of the ineffectiveness of "incident research method" in testing the efficiency of stock market,the hedonic price method is proposed in this paper for the very purpose.And the proposed method has been successfully employed in calculating the excess earning rate of grouped stocks resulting from the promulgation of Law of Stock,a typical incident,which proves its validity.更多还原