摘要
本文从非参数和半参数角度采用八种估计方法对我国沪铜、沪金、橡胶和连豆为代表的主要期货价格收益率和波动率的长记忆性进行实证对比检验,结果发现,从整体上看期货价格收益率长记忆性特征不明显,而波动率存在显著长记忆性结构,这说明不可预测信息对我国期货市场波动性具有长远影响。结论对我国期货市场效率度量、投资决策和风险管理具有指导和启示意义。
From the semi-parametric and nonparametric perspective,the paper empirically examines the long memory of commodity futures price yields and volatility,such as copper,gold,rubber and soybean by use of eight estimation methods. The research finds that： the long memory of futures price yields is not obvious as a whole,while there is significant long memory structure of futures price volatility,showing that unpredictable information has a long-term impact on the volatility of the futures market. The conclusions have important guiding and enlightment significance for efficiency measures of futures market,investment and risk management.
出处
《商业研究》
CSSCI
北大核心
2017年第1期57-68,共12页
Commercial Research
关键词
商品期货
波动率
长记忆性
commodity futures
volatility
Long Memory
