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比特币对我国股票市场波动性的影响——基于双重非对称GARCH-MIDAS模型的实证研究 被引量:1

The impact of bitcoin on the volatility of China’s stock market:Empirical evidence from double asymmetric GARCH-MIDAS model
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摘要 在考虑股票市场收益率以及波动率非对称性的基础上,通过采用上证综合指数、五大行业股票指数(工业、商业、房地产业、公共事业和其他行业)以及比特币数据,构建双重非对称GARCH-MIDAS(DAGARCH-MIDAS)模型,实证研究比特币对我国整体股票市场在不同样本期间(全样本期、中国股市崩盘的2014—2016年、比特币依托的区块链技术火热的2016—2019年)和对不同行业股票市场在全样本期间的影响。研究结果表明:在全样本期,比特币对我国整体股票市场具有显著的正向影响;在2014—2016年的子样本期,比特币对我国股市的正向影响更为显著;在2016—2019年的子样本期,比特币对我国股市具有显著的负向影响;比特币对我国工业、商业、房地产业和其他行业的股票市场均具有显著的正向且相似的影响,但对我国公共事业股票市场并没有显著冲击。 Considering the asymmetries of both the stock market returns and volatility, this paper proposes the double asymmetric GARCH-MIDAS(DAGARCH-MIDAS) model to study the impact of bitcoin on the China’s stock market during the period of different samples(full sample, stock market crash in 2014—2016, the popular of the blockchain technology supported by bitcoin in 2016—2019) and stock markets of different industries, using the SSE composite index, five major industrial stock indices(industry, commerce, real estate, public utility and other industries) and bitcoin data. The results show that bitcoin has a significant positive impact on China’s overall stock marketin the full sample;the positive impact of bitcoin on China’s stock market has become more significant during 2014—2016;bitcoin has a significant negative impact on China’s stock market during 2016—2019;bitcoin has a significant positive and similar impact on China’s industry, commerce, real estate and other industries, but has no shock on the China’s public utility.
作者 吴鑫育 王小娜 WU Xinyu;WANG Xiaona(School of Finance,Anhui University of Finance and Economics,Bengbu 233030,China)
出处 《重庆理工大学学报(社会科学)》 2022年第8期65-75,共11页 Journal of Chongqing University of Technology(Social Science)
基金 国家自然科学基金项目“时变崩盘风险下的期权定价及风险测度研究”(71971001) 国家自然科学基金项目“时变风险厌恶下的期权定价与参数估计研究”(71501001) 安徽省高校优秀拔尖人才培育项目“2017年度高校优秀青年骨干人才国内外访学研修项目”(gxfx2017031) 安徽省高校自然科学研究项目“考虑期权数据信息的市场风险度量研究”(KJ2019A0659) 安徽财经大学研究生科研创新基金项目“区块链技术背景下数字货币市场的风险测度研究”(ACYC2019093)。
关键词 比特币 中国股市 非对称性 GARCH-MIDAS模型 区块链 bitcoin China’s stock market asymmetry GARCH-MIDAS model blockchain
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