Ciência-IUL
Publicações
Descrição Detalhada da Publicação
Asymmetry, realised volatility and stock return risk estimates
Título Revista
Portuguese Economic Journal
Ano (publicação definitiva)
2012
Língua
Inglês
País
Alemanha
Mais Informação
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Abstract/Resumo
In this paper we estimate minimum capital risk requirements for short and long positions with three investment horizons, using the traditional GARCH model and two other GARCH-type models that incorporate the possibility of asymmetric responses of volatility to price changes. We also address the problem of the extremely high estimated persistence of the GARCH model to generate observed volatility patterns by including realised volatility as an explanatory variable into the model’s variance equation. The results suggest that the inclusion of realised volatility improves the GARCH forecastability as well as its ability to calculate accurate minimum capital risk requirements and makes it quite competitive when compared with asymmetric conditional heteroscedastic models such as the GJR and the EGARCH.
Agradecimentos/Acknowledgements
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Palavras-chave
Asymmetry,High-frequency data,Minimum capital risk requirements,Realised volatility
Classificação Fields of Science and Technology
- Economia e Gestão - Ciências Sociais
Registos de financiamentos
Referência de financiamento | Entidade Financiadora |
---|---|
MTM2010-17323 | Ministerio de Economía, Industria y Competitividad |
ECO2009-08100 | Ministerio de Economía, Industria y Competitividad |
CCG10-UAM/ESP-5494 | Comunidad de Madrid |