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中国管理科学 ›› 2010, Vol. 18 ›› Issue (5): 7-13.

• 论文 • 上一篇    下一篇

股票市场价值函数实证研究

文凤华1,3, 饶贵添1, 杨晓光1,2,3   

  1. 1. 长沙理工大学经济与管理学院, 湖南 长沙 410004;
    2. 中国科学院数学与系统科学研究院管理, 决策与信息系统重点实验室, 北京 100080;
    3. 湖南省金融工程与金融管理研究中心, 湖南 长沙 410004
  • 收稿日期:2009-12-07 修回日期:2010-09-07 出版日期:2010-10-30 发布日期:2010-10-30
  • 作者简介:文凤华(1972- ),男(汉族),湖南益阳人,长沙理工大学经济与管理学院教授,研究方向:金融工程与行为金融.
  • 基金资助:

    国家自然科学基金资助项目(70971013);湖南省杰出青年基金(09JJ1010);湖南省教育厅创新平台项目(09K064)

Empirical Study on Value Functions of Stock Markets

WEN Feng-hua1,3, RAO Gui-tian1, YANG Xiao-guang1,2,3   

  1. 1. School of Eoonomics and Management, Changsha University of Science and Techaology, Changsha 410004, China;
    2. Key Laboratory of Managenent, Decision and Information Systems, Academy of Mathematics and Systems Sciences, Chinese Acadeny of Sciences, Beijing 100080, China;
    3. Research Center for Finamcial Engineering and Financial Management of Hunan Province, Changsha, 410004, China
  • Received:2009-12-07 Revised:2010-09-07 Online:2010-10-30 Published:2010-10-30

摘要: 价值函数是前景理论的核心组成部分,用以刻画决策者对于收益和损失的主观感受.以前对前景理论的实证研究基本上通过心理学实验来进行,而且是针对决策者个体进行的.本文以股票市场整体为对象,采用EGARCH模型提取到达市场上的信息流作为财富改变的代理变量,利用两阶段幂函数型作为价值函数的表现形式,对十个国家股票市场上综合指数的日收益率数据进行了实证研究.实证结果发现各国股票市场上价值函数均呈现反S形状的,与多数心理实验中个体决策者表现价值函数呈S形状迥然有别.

关键词: 前景理论, 价值函数, 价格波动, 信息序列

Abstract: As a core component of prospect theory,value function is employed to characterize the subjective experience of a decision-maker's gain and loss.Previous empirical studies of prospect theory were largely carried out through psychological experiments on individual decision-makers.In this paper,taking a whole stock market as an entire entity,we use the flow of information extracted by EGARCH Model as the proxy variable of change in wealth,and then use a two-stage power function as the representation of the value function to study the daily return data from stock market of 10 countries or regions Empirical results show that the value functions of all the 10 stock markets present the shape of inverse-S,instead of the S-Shape of value function generated by most individual- based psychological experiments.

Key words: prospect theory, value function, price volatility, information sequence

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