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Chinese Journal of Management Science ›› 2012, Vol. ›› Issue (2): 41-49.

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Comparative Research on Forecast Ability of Double-Long-Memory GARCH Family Models ——Empirical Analysis of Shanghai and Shenzhen Stock Markets

CAO Guang-Xi1,2, CAO Jie1, XU Long-bing2   

  1. 1. School of Economics and Management, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    2. School of Finance, Shanghai University of Finance and Economics, Shanghai 200433, China
  • Received:2011-03-20 Revised:2011-12-12 Online:2012-04-29 Published:2012-04-25

Abstract: GARCH family models have been widely used in financial risk measurement. There is double long memory characteristic in stock market. That is returns and fluctuations series of stock prices usually have long memory feature respectively. Hereby, by using Shanghai and Shenzhen stock markets returns series, double-long-memory GARCH family models with different distributions are comparative analyzed, based on the instruction of VaR computation and PCS indicator which can be used to measure investment risk and risk disgust degree respectively. As fitting and forecasting results shown, skewed t distribution can describe the "fat tail" feature of stock markets, and under the small VaR condition the ARFIMA(2,d1,0)-FIAPARCH(1,d2,1)-skt model show stronger forecast ability to the fluctuation risk of stock market while the ARFIMA(2,d1,0)-HYGARCH(1,d2,1)-skt model present stronger ability to the trends of rise and fall.

Key words: VaR, long memory, ARFIMA, FIAPARCH, HYGARCH

CLC Number: