In this paper we investigate the empirical performance of an alternative beta risk estimator, which is designed to be superior to its conventional counterparts in situations of extreme thin trading. The estimator used is based on the sample selectivity model. The study compares the resultant...

This paper investigates three techniques for the estimation of conditional timeâ€dependent betas: (a) a multivariate generalised ARCH approach; (b) a timeâ€varying beta market model approach suggested by Schwert and Seguin (1990); and (c) the Kalman filter technique. These approaches are...