碳价格波动率模型构建与预测:基于无穷活动率Levy过程

被引:29
作者
胡根华 [1 ,2 ]
朱福敏 [3 ]
机构
[1] 安徽工业大学商学院
[2] 安徽创新驱动发展研究院
[3] 深圳大学经济学院
基金
安徽省自然科学基金;
关键词
欧盟排放配额; 跳跃; Levy过程; 在险价值; 回溯测试;
D O I
10.13860/j.cnki.sltj.20180410-002
中图分类号
X196 [环境经济学]; F831.5 [金融市场];
学科分类号
020109 [世界经济学]; 083001 [环境科学];
摘要
考虑碳金融资产价格的跳跃行为特征与杠杆效应,文章选取欧盟碳排放配额现货价格作为研究对象,构建基于无穷活动率Levy过程的碳价格波动率模型并检验其预测效果。首先,假设碳价格不存在跳跃而构建无跳跃的BM-NGARCH模型;然后,假设碳价格的跳跃过程分别服从有限跳跃行为过程与无穷跳跃行为(Variance Gamma过程,Normal Inverse Gaussian过程与Classical Tempered Stable过程)过程,构建MJ-NGARCH模型、VG-NGARCH模型、NIGNGARCH模型和CTS-NGARCH模型等四种Levy波动率模型,并采用基于傅里叶变换的极大似然法估计相关参数;最后,基于上述模型对碳价格进行预测并计算在险价值,进而采用回溯测试方法检验模型的优劣程度。主要研究结果:在5%的显著水平上,BM-NGARCH没有通过尾部检验,而CTS-NGARCH模型在拟合碳价格特征方面具有最佳的拟合效果,说明碳价格存在显著的跳跃行为;在预测方面,BM-NGARCH对碳价格的预测表现最差,而基于无穷活动率Levy过程的碳价格模型都取得较好的预测效果。
引用
收藏
页码:892 / 903
页数:12
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