Gonzalez-Perez, Maria T.; Novales, Alfonso - In: SERIEs : Journal of the Spanish Economic Association 2 (2011) 2, pp. 185-216
A model-free methodology is used for the first time to estimate a daily volatility index (VIBEX-NEW) for the Spanish … display a negative, tight contemporaneous relationship with IBEX daily returns, contrary to other common volatility indicators …, as an implied volatility indicator or a GARCH(1,1) conditional volatility model. This relationship is approximately …