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国际原油价格与我国新能源股股价的波动研究 被引量:3

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摘要 选取2014年5月16日至2018年10月25日WTI原油期货价格与深证国证新能指数的日样本数据,通过ADF检验、自相关检验、ARCH检验等方法,基于ARMA-GARCH模型对二者的VaR(在险价值)与其之间的△CoVaR进行拟合和预测,对国际原油价格与我国能源股价格间的波动关系进行量化研究,并做出经济解释。结果表明,国际原油期货价格对我国新能源股的溢出效应呈现正负交替的时变性以及显著的不对称性,即油价下跌的溢出效应比其上涨更为明显;从长期来看,原油对新能源股存在较为显著的正向风险溢出。故政府需做好准备应对这种溢出效应,重点勘察国际油价下跌给股市造成的风险。
出处 《商业经济》 2019年第3期156-158,共3页 Business & Economy
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