Abstract
This research paper offers a comparative evaluation of the four well known models of beta adjustment, viz., the Scholes and Williams, Dimson, Cohen et al. and Fowler and Rorke. For the purpose, we cover a period of ten years (January 2004 to December 2013), and analyse the data in two sub-groups, namely, before and after the sub-prime crisis. Out of the four models studied, the best model is used for the beta adjustment. Further, we utilise the adjusted beta for testing the capital asset pricing model (CAPM) in the Indian capital market. The results of this study are expected to provide necessary evidence on important aspects of beta estimation with a daily frequency dataset and its robustness.
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