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Modeling risk dependence and portfolio VaR forecast through vine copula for cryptocurrencies

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  • Khreshna Syuhada
  • Arief Hakim

Abstract

Risk in finance may come from (negative) asset returns whilst payment loss is a typical risk in insurance. It is often that we encounter several risks, in practice, instead of single risk. In this paper, we construct a dependence modeling for financial risks and form a portfolio risk of cryptocurrencies. The marginal risk model is assumed to follow a heteroscedastic process of GARCH(1,1) model. The dependence structure is presented through vine copula. We carry out numerical analysis of cryptocurrencies returns and compute Value-at-Risk (VaR) forecast along with its accuracy assessed through different backtesting methods. It is found that the VaR forecast of returns, by considering vine copula-based dependence among different returns, has higher forecast accuracy than that of returns under prefect dependence assumption as benchmark. In addition, through vine copula, the aggregate VaR forecast has not only lower value but also higher accuracy than the simple sum of individual VaR forecasts. This shows that vine copula-based forecasting procedure not only performs better but also provides a well-diversified portfolio.

Suggested Citation

  • Khreshna Syuhada & Arief Hakim, 2020. "Modeling risk dependence and portfolio VaR forecast through vine copula for cryptocurrencies," PLOS ONE, Public Library of Science, vol. 15(12), pages 1-34, December.
    • Handle: RePEc:plo:pone00:0242102
    DOI: 10.1371/journal.pone.0242102
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    References listed on IDEAS

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    4. Nader Trabelsi, 2017. "Tail dependence between oil and stocks of major oil-exporting countries using the CoVaR approach," Borsa Istanbul Review, Research and Business Development Department, Borsa Istanbul, vol. 17(4), pages 228-237, December.
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    Cited by:

    1. Syuhada, Khreshna & Hakim, Arief & Suprijanto, Djoko & Muchtadi-Alamsyah, Intan & Arbi, Lukman, 2022. "Is Tether a safe haven of safe haven amid COVID-19? An assessment against Bitcoin and oil using improved measures of risk," Resources Policy, Elsevier, vol. 79(C).
    2. Syuhada, Khreshna & Suprijanto, Djoko & Hakim, Arief, 2022. "Comparing gold’s and Bitcoin’s safe-haven roles against energy commodities during the COVID-19 outbreak: A vine copula approach," Finance Research Letters, Elsevier, vol. 46(PB).

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