摘要
GARCH类模型能够比较好的描述股市收益率的动态变化特征,捕捉股市的集丛效应和非对称性,基于GARCH模型计算VaR已经成为金融市场风险管理的一种主流方法。基于不同分布假设,以常用的4种GARCH类模型来拟合我国中小板综合指数收益率,分别估计不同模型下的VaR值,综合分析最后得出了t分布假设下的GARCH模型能比较好的反映我国中小板的市场风险的结论。
GARCH model can well describe the dynamic characteristics of the yield of stock market, capture its series effect and non-symmetry. The method of calculation of VaR based on GARCH model has wildly used in the field of financial market risk management. This article based on different distribution, we use 4 kinds of GARCH models to fit the yield of the Com- posite Index of China's SME board then estimate VaR respectively. After a comprehensive analysis we conclude that the GARCH model under t distribution well reflects the market risk of China' s SME board.
出处
《南开大学学报(自然科学版)》
CAS
CSCD
北大核心
2013年第3期56-63,共8页
Acta Scientiarum Naturalium Universitatis Nankaiensis
关键词
中小板
VAR
GARCH模型
small and medium enterprises board
value at risk
GARCH model