This article examines different one-factor models of the short-term nominal interest rate in Chile, concluding that the models best describing this behavior are those that allow the rate volatility not to be constant, a conclusion similarly reached by CKL

The paper studies the effect of bond rating upgrades (downgrades) on stock prices in Chile which, based on the international evidence is expected to be positive (negative). However, no effect is observed, even when the sample is analyzed according to the type of agency that announced the rating...

This paper examines the most frequently used models of conditional variance in the estimation of stock returns and portfolios. The models are analyzed by various tests in order to measure their capabilities to explain variance. At the same time, the tests