摘要本文运用Copula-Co Va R模型来检验在次贷危机的背景下,伦铜和沪铜期货市场之间的风险溢出效应。实证结果表明,伦铜和沪铜期货市场之间存在着积极的相互溢出效应,这意味着伦铜上涨将导致沪铜上涨,反之亦然。沪铜对伦铜的依赖性显示了厚尾的特征。次贷危机以后SHFE对LME的影响增强,LME对SHFE的影响下降,次贷危机发生时,SHFE对LME的影响剧烈增加。
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