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中国管理科学 ›› 2003, Vol. ›› Issue (2): 16-20.

• 论文 • 上一篇    下一篇

股票收益随机波动模型研究

沈根祥   

  1. 上海财经大学经济学院 上海 200083
  • 收稿日期:2002-04-22 修回日期:2003-03-24 出版日期:2003-04-28 发布日期:2012-03-06

The Stochastic Volatility Model for Stock Return

SHEN Gen-xiang   

  1. Economics College of Shanghai University of Finance and Economics, Shanghai 200083, China
  • Received:2002-04-22 Revised:2003-03-24 Online:2003-04-28 Published:2012-03-06

摘要: 通过对金融资产时间序列数据特点的分析,指出GARCH模型在描述金融资产时序数据的局限,尝试用随机波动模型刻画股票收益的波动规律,采用GMM方法估计模型参数,并以上海证券交易所综合指数日收益率数据为样本,对沪市指数收益波动进行实证研究,探讨涨跌停板制度对股市波动的作用。

关键词: 厚尾, 波动群集, GARCH, 随机波动, 涨跌停板

Abstract: Analyzing the characteristics of financial data and pointing out the drawbacks of GARCH models,the paper describes the volatilities of daily stock return by stochastic volatility model and employs GMM to estimate the parameters in the model.In the final,the paper carries out a emprical analysis of daily stock return volatilties in Shanghai stock market to figure out the effects of price limits posed on daily price of stocks listed in Shanghai Stoke Exchange on volatility and distribution pattern of stock return.

Key words: fat tail, volatility clustering, GARCH, stochastic volatility, price limits

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