Risk and Return Around Bond Rating Changes: New Evidence From the Spanish Stock Market

Pilar Abad and M. Dolores Robles-Fernandez
Authors registered in the RePEc Author Service: M. Dolores Robles Fernandez ()

Journal of Business Finance & Accounting, 2006, vol. 33, issue 5-6, pages 885-908

Abstract: This study analyzes the effect of corporate bond rating changes on stock prices in the Spanish stock market. We explore their effects on excess of returns and systematic risk. Rating changes by Moody's, Standard and Poor's and FitchIBCA are analyzed. On an efficient market, these changes will only have some effect if they contain some new information or if they are associated to a redistribution of wealth between shareholders and bondholders. We use an extension of the event study dummy approach. Our results support the redistribution of wealth hypothesis in the abnormal returns behavior. We also find that changes in both directions cause a rebalancing effect in the total risk of the firm, with significant reductions on their systematic component. Copyright 2006 The Authors Journal compilation (c) 2006 Blackwell Publishing Ltd.

Date: 2006
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