IPO新股询价制对电力行业股票收益率的影响

The influence on stock profit ratio of electric power industry by different IPO systems

应用数理统计并结合金融数学的方法,研究不同的新股发行方式对电力行业上市公司的影响,实证研究IPO询价制度实行前后电力行业的股票市盈率及股票收益率的变化趋势和特点,研究市盈率和收益率的统计分布及相关模型.首次尝试采用稳健的R估计法建立电力行业股票收益率与经营业绩指标的数学模型.

Applying mathematical statistical and financial mathematical methods, this paper analysis influences on listed companies of electric power industry by different IPO methods, presents an empirical studies for changing trends and characteristics of IPO P/E ratio and stock profit ratio before and after IPO inquiry system, and discusses statistical distributions of IPO P/E ratio and stock profit ratio. Initially applying robust R estimator method, a more significant multivariate regression model among stock profit ratio and business achievement index such as earnings per share is established.