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基于DGCMSVt模型的欧盟碳市场信息流动研究

2017-04-01张晨刘宇佳��

软科学 2017年2期

张晨++刘宇佳��

摘要:以能较好地刻画碳价随机波动特征的DGC-MSV模型为基础,考虑碳价尖峰厚尾特性,采用t分布修正模型,选择国际碳市场典型产品EUA为对象,将碳市场溢出效应研究拓展到碳现货、期货、期权三市场中。研究发现:均值溢出方面,EUA现货、期货、期权三市场间呈现高度时变正相关。现货与期货、现货与期权市场时变关系波动剧烈但波动持续性较低,期货与期权市场则反之;波动溢出方面,EUA现货与期货、期货与期权市场间均有显著且双向为正的风险传导现象,但仅存在期权对现货市场微弱的正向溢出。期权与期货市场相比信息量更丰富,是主要的风险溢出源。

关键词:碳现货;碳期货;碳期权;均值溢出;波动溢出

DOI:10.13956/j.ss.1001-8409.2017.02.28

中图分类号:F113;F8315 文献标识码:A 文章编号:1001-8409(2017)02-0130-06

Research on Information Flow of EU ETS Based on

DGCMSVt Model

ZHANG Chen, LIU Yujia

(School of Management,Hefei University of Technology, Hefei 230009)

Abstract:This paper improved DGCMSV model using a t distribution hypothesis.It used the EUA data to extend spillover effect on carbon emission markets to spot, futures, options markets. The empirical results showed that: in terms of mean spillover effect, there was a high and dynamic degree of positive correlation in three markets. The correlation between spot and futures markets, spot and options markets fluctuated wildly but didnt last long. The relationship between futures and options markets was opposite. In terms of volatility spillover effect, there was a significant positive risk transmission which was twoway between spot and futures markets, futures and options markets. There was only oneway spillover from options market to spot market which was positive but weak. Options market was the main source of risk spillover.

Key words:carbon spot; carbon futures; carbon options; mean spillover; volatility spillover

引言

經济与环境的平衡问题一直是国际关注热点。随着2015年12月巴黎气候大会的召开,碳排放权交易市场已成为全球节能减排重要平台。但其作为新兴市场极易受到复杂外部环境影响[1],碳价波动态势明显。欧盟碳排放权交易体系(European Union Emission Trading Scheme,EUETS)下主要产品欧盟排放配额(European Union Allowances,EUA)的成交量占市场交易总量的80%以上,价格波动对碳市场总体影响不容小觑[2,3]。2012~2013年,欧洲经济下滑以及《京都议定书》第一承诺期到期使欧盟碳市场剧烈波动,碳价不稳定性迅速传染到全球碳市场中,给国际碳市场发展带来很大不确定性。这种不稳定性传播的本质是引起市场价格变化的信息从一个市场传递到另一个市场的过程,即信息流动。……

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