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Testing for multiple bubbles in bitcoin markets: A generalized sup ADF test

机译:测试比特币市场中的多个泡沫:通用sup ADF测试

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This study investigates whether bubbles exist in Bitcoin markets and tracks when they will occur and collapse. We apply the generalized sup Augmented Dickey-Fuller test method proposed by Phillips et al. (2013). The results show that there have been four explosive bubbles in China and the U.S. market, primarily occurring during the periods of huge surges in Bitcoin prices. This is consistent with the bubble model improved by Gurkaynak (2008), in which asset price is decomposed into fundamental and bubble components. In particular, exogenous shocks, including foreign or domestic economic events, lead to the origination of bubbles. A serious financial crisis may trigger long-term and large-scale bubbles, whereas relatively short-term bubbles are caused by domestic components. It can be inferred that Bitcoin can be used as a hedge against market-specific risk. Finally, Bitcoin bubbles collapse due to administrative intervention by economic authorities. Therefore, the government should manage public expectations to maintain confidence in authority and reduce speculation behavior to stabilize the asset price and financial market. (C) 2018 Elsevier B.V. All rights reserved.
机译:这项研究调查了比特币市场中是否存在泡沫,并跟踪泡沫何时发生和崩溃。我们应用了由Phillips等人提出的广义sup Augmented Dickey-Fuller测试方法。 (2013)。结果表明,中国和美国市场出现了四个爆炸性泡沫,主要发生在比特币价格大幅上涨期间。这与Gurkaynak(2008)改进的泡沫模型相一致,在该模型中,资产价格被分解为基本和泡沫成分。特别是,外来冲击,包括国外或国内经济事件,都会导致泡沫的产生。严重的金融危机可能引发长期和大规模的泡沫,而相对短期的泡沫是由国内因素造成的。可以推断,比特币可以用作对冲特定市场风险的对冲工具。最后,由于经济主管部门的行政干预,比特币泡沫破裂。因此,政府应管理公众的期望,以保持对权威的信心,减少投机行为,以稳定资产价格和金融市场。 (C)2018 Elsevier B.V.保留所有权利。

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