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中国管理科学 ›› 2023, Vol. 31 ›› Issue (5): 104-115.doi: 10.16381/j.cnki.issn1003-207x.2020.1710

• 论文 • 上一篇    

上海黄金是人民币汇率风险的对冲工具和安全港吗?——基于常量和动态Copula模型

林娟1, 2, 吴春晓2, 张明3   

  1. 1.厦门大学经济学院,福建 厦门361005;2.厦门大学王亚南经济研究中心,福建 厦门361005;3.中国社会科学院金融研究所,北京100070
  • 收稿日期:2020-09-06 修回日期:2021-01-29 发布日期:2023-05-23
  • 通讯作者: 林娟(1981-),女(汉族),福建邵武人,厦门大学经济学院,副教授,博士,研究方向:风险管理、金融计量,Email:ecsniffer@xmu.edu.cn. E-mail:ecsniffer@xmu.edu.cn
  • 基金资助:
    国家自然科学基金资助面上项目(72173107,71671150,71571154,72273112);教育部人文社会科学研究青年基金资助项目(20YJC790071)

Is Shanghai Gold a Hedge and a Safe Haven for the RMB?——Based on the Constant and Time-varying Copula Models

LIN Juan1, 2, WU Chun-xiao2, ZHANG Ming3   

  1. 1.School of Economics, Xiamen University, Xiamen 361005, China;2.Wang Yanan Institute for Studies in Economics, Xiamen University, Xiamen 361005, China;3.Institute of Finance & Banking, Chinese Academy of Social Sciences, Beijing 100070, China
  • Received:2020-09-06 Revised:2021-01-29 Published:2023-05-23
  • Contact: 林娟 E-mail:ecsniffer@xmu.edu.cn

摘要: 本文探讨了在人民币国际化进程中,上海黄金作为重要的避险资产,在一般市场条件尤其是在极端市场条件下能否有效地规避人民币的汇率风险。本文基于常量和时变Copula模型研究了“8.11”汇改以来上海黄金现货与7种主要人民币汇率之间的对冲和安全港效应。研究发现:(1)上海黄金现货能够稳定地对冲人民币兑欧元、澳元、新元和英镑等主要贸易货币及人民币有效汇率风险。此外,当这些汇率出现大幅波动时,上海黄金能够稳定地发挥安全港作用。(2)针对人民币兑日元和美元的汇率风险,上海黄金的对冲和安全港功能具有明显的时变特征。(3)机制分析的实证结果显示,2019年4月之前,中美利差机制起主导作用,导致上海黄金无法对冲人民币兑美元的汇率风险;而在2019年4月之后,投资避险机制起主导作用,使得上海黄金能够有效地对冲人民币兑美元的汇率风险。本文为面临汇率风险的投资者提供了有益的参考,并说明发展中国黄金市场有助于稳定人民币汇率。

关键词: 上海黄金现货;人民币汇率;对冲;安全港;GAS时变Copula模型

Abstract: This paper investigates whether Shanghai gold can hedge against RMB exchange rate risks in the process of RMB internationalization, particularly under extreme market conditions. We use constant and GAS time-varying Copula models to analyze the data of seven RMB exchange rates and Shanghai gold prices from August 17, 2015, to December 31, 2019. We find that Shanghai gold can generally serve as a hedge against RMB movements against the euro, Australian dollar, Singapore dollar, British pound and the currencies of its main trading partners presented by the BIS effective exchange rate. The symmetric tail dependence between the returns of gold and exchange rates indicates that gold can act as a reliable safe haven in the event of extreme RMB movements against these currencies. Furthermore, the dependence between Shanghai gold and JPY/CNY changes over time. Shanghai gold is a hedge and a safe haven against JPY/CNY exchange rate risks throughout the considered sample period.

Key words: Shanghai gold; RMB exchange rate; hedge; safe haven; GAS time varying copula model

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