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A publicação pode ser exportada nos seguintes formatos: referência da APA (American Psychological Association), referência do IEEE (Institute of Electrical and Electronics Engineers), BibTeX e RIS.

Exportar Referência (APA) 
Bentes, S. R. (2015). A comparative analysis of the predictive power of implied volatility indices and GARCH forecasted volatility. Physica A. 424, 105-112
Exportar Referência (IEEE) 
S. M. Bentes,  "A comparative analysis of the predictive power of implied volatility indices and GARCH forecasted volatility", in Physica A, vol. 424, pp. 105-112, 2015
Exportar BibTeX 
@article{bentes2015_1713530853926,
	author = "Bentes, S. R.",
	title = "A comparative analysis of the predictive power of implied volatility indices and GARCH forecasted volatility",
	journal = "Physica A",
	year = "2015",
	volume = "424",
	number = "",
	doi = "10.1016/j.physa.2015.01.020",
	pages = "105-112",
	url = "http://www.sciencedirect.com/science/article/pii/S0378437115000229"
}
Exportar RIS 
TY  - JOUR
TI  - A comparative analysis of the predictive power of implied volatility indices and GARCH forecasted volatility
T2  - Physica A
VL  - 424
AU  - Bentes, S. R.
PY  - 2015
SP  - 105-112
SN  - 0378-4371
DO  - 10.1016/j.physa.2015.01.020
UR  - http://www.sciencedirect.com/science/article/pii/S0378437115000229
AB  - This paper examines the accuracy of implied volatility and GARCH forecasted volatility to predict the behavior of realized volatility. The methodology adopted addresses the information content, the bias, the efficiency and the efficiency forecast of the predictor. In previous studies on this topic, efficiency has been analyzed both in terms of the efficiency of the predictor itself and its forecasting efficiency. In this context, implied volatility is the predictor and the efficiency is assessed through the validation of some of the OLS (Ordinary Least Squares) assumptions. However, those studies paid little attention to the heteroskedasticity of the residuals, even though this is an important source of inefficiency. Our study accounts for conditional heteroskedasticity by using a GARCH model to predict the time-dependent variance of the residuals. A GARCH forecasted volatility index was constructed based on these estimates. In addition, we employ out-of-sample forecasting accuracy tests in order to identify the best forecasting model. The results clearly show that GARCH forecasted volatility outperforms implied volatility to produce out-of-sample forecasts based on a subsample of the total sampling period for the four stock markets analyzed.
ER  -