In this paper we measure the error of estimating the term structure by the YTM/Duration approximation. The figures are based on the fact that model of term structure proposed by Nelson and Siegel (1987) is valid, and bonds are bullets. For the case of Chile we found that the approximation...

We evaluate the impact of persistence in volatility over the probability of default in Merton’s credit risk model. Our main conclusion is that a high degree of persistence, as it is observed in equity returns, implies a lower probability of default for those cases where firms possess a high...