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基于有效市场假说的我国B股市场效率的研究
【作者】 刘剑;
【导师】 袁利金;
【作者基本信息】 浙江大学 , 企业管理, 2005, 硕士
【摘要】 随着法玛在1970年提出了有效市场假说理论,资本市场的效率问题就成了广大学者研究的热点和金融学理论最前沿的问题,也使得几十年来,国内外的学者对各国证券市场效率问题的研究乐此不疲。然而,在我国这样一个新型的证券市场,低市场效率一直都困扰着投资者和市场的监管者,如何提高我国证券市场的效率也成了一个急需解决的问题。本论文以我国的B股的市场效率为研究对象,以有效市场假说为理论基础,通过几种不同的检验方法对我国的B股市场效率作了实证研究。全文共分为三大部分:研究背景和理论提出、实证研究、结论与展望。在研究背景与理论提出部分,本文首先阐述了研究市场效率的理论意义及现实意义。然后,系统地总结了国内外学者有关市场效率的基本理论(资本资产定价模型和有效市场假说)及目前实证研究的成果。在本文实证研究部分,本文首先利用定性的分析对我国的B股市场的效率做了一个大致的研究,然后根据理论模型和研究假设,随机选取了我国B股市场上的40只股票(深沪市场各20只)和两市的市场指数为研究样本,以样本的日收益率为研究指标,利用Microsoft Excel和SPSS统计软件,采用滞后自相关检验、一元滞后自回归方程检验、游程检验三种方法作了实证研究。最后,得出的主要结论如下:1. 我国的B股市场的日收益率呈随机游走状态,已经是弱式有效市场。2. 我国的B股市场还没有达到半强式有效市场。在结论与展望部分,本文首先系统地总结了本文的研究结论,然后就如何提高我国B股市场的效率给出了几点建议,希望对投资者和市场监管机构有所帮助,最后,对未来的研究做了展望。
【Abstract】 As Fama brought forward the theory of efficient market hypothesis, the capital market efficiency has become a hot topic and one of the most forefront issues. Many scholars has been devoting to it for decades. But in such an emerging stock market for china, the low market efficiency has been always obsessed investors and market supervisors, how to improve our market efficiency becomes a very important issue.This paper takes our B-share market efficiency as the research target, and the Efficient Market Hypothesis as the basis. It researched our B-share market efficiency in three different ways. The paper consists of three parts: the background theories, empirical study, and conclusions and prospects.In the first part, the paper first explains the theoretical and practical meaning of the research, then systematically reviewed the basic theories (CAPM and EMH) and empirical studies.In the second part, the paper researches the daily returns of 40 shares (20 respectively in Shenzhen and Shanghai B-share markets) and those of the indexes of Shenzhen and Shanghai B-share markets in three different ways (self-correlation analysis, linear regression analysis and run test analysis). The main conclusion is as follows:1. The daily returns of china’ s B-share markets are random walk, the markets are weak-form efficient markets.2. China’ s B-share Markets haven’ t reached the semi strong-form efficiency.In the third part, the paper first concludes the study, then gives several pieces of suggestion on how to improve the efficiency of china’ s B-share markets.
【Key words】 B-share; market efficiency; random walk; Efficient Market Hypothesis (EMH); weak-form efficiency;
- 【网络出版投稿人】 浙江大学 【网络出版年期】2005年 02期
- 【分类号】F832.5
- 【被引频次】3
- 【下载频次】788