Modeling Asset Returns: A Comparison of Theoretical and Empirical Models
29 Pages Posted: 6 Feb 2004
Abstract
This paper presents and compares several time-series models for returns of broad-based stock indices. These models nest a nonlinear asymmetric GARCH (NGARCH) model as a special case. Some of these models are empirically motivated as-hoc specifications others are derived from a representative investor economy with HARA-utility and some are behavioral, i.e. are based on recent findings in behavioral finance. To compare these models we use the inflation adjusted MSCI total return indices of 5 large economies, USA, United Kingdom, Germany, France and Japan. The empirical results show that although the pure NGARCH model performs well, the estimation for two indices could be significantly improved by an extension which follows from the representative investor model with HARA-utility.
Keywords: Asset pricing, HARA-utility function, behavioral finance, NGARCH-in-mean
JEL Classification: G12, G15, C22
Suggested Citation: Suggested Citation
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