to be robust using both the realized volatility model and the GARCH model, confirm that the value premium cannot be …

"We analyze the volatility surface vs. moneyness and time to expiration implied by MIBO options written on the MIB30 …, the most important Italian stock index. We specify and fit a number of models of the implied volatility surface and find … that it has a rich and interesting structure that strongly departs from a constant volatility, Black-Scholes benchmark …

magnitude of the premia on the size and value portfolios and their hedging properties are found to vary significantly across …

from the loan performance database on securitized private-label pool collateral, we utilize a two-step estimation procedure … to control for the endogeneity of delinquency in an estimation of default and prepayment probabilities. We find strong …