This paper examines and estimate the three GARCH(1,1) models (GARCH, EGARCH and GJR-GARCH) using the daily price data. Two Asian stock indices KLCI and STI are studied using daily data over a 14-years period. The competing Models include GARCH, EGARCH and GJR-GARCH used with three different...

In this paper, we propose a heteroskedastic model in discrete time which converges, when the sampling interval goes to zero, towards the complete model with stochastic volatility in continuous time described in Hobson and Rogers (1998). Then, we study its stationarity and moment properties. In...

En los primeros meses de 1982, Robert Engle revolucionaba el estudio de los modelos de volatilidad ampliando al campo de las estructuras cuadráticas las ya muy utilizadas pautas de la metodología Box- Jenkins, creadas en 1976. Desde entonces, se han escrito multitud de aportaciones sobre las...

En este trabajo se presenta la metodología bootstrap como una alternativa para construir intervalos de predicción en series temporales cuando las hipótesis usuales de los métodos clásicos no son sostenidas por los datos, o cuando el tamaño muestral no es suficientemente elevado para...

In the paper a non-stationary ARCH model is defined and its relation with a heteroscedastic RCA model is presented. Further, estimation of unknown parameters in a non-stationary ARCH(l) is described under a special seasonal behaviour of time varying parameters. This procedure is compared with...

This note summarizes some technical issues relevant to the use of the idea of excess return in empirical modelling. We cover the case where the aim is to construct a measure of expected return on an asset and a model of the CAPM type is used. We review some of the problems and show examples...