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CAPM with Option-Implied Betas: Another Rescue AttemptAdrian BussINSEAD - Finance Christian SchlagGoethe University Frankfurt - Department of Finance Grigory VilkovGoethe University Frankfurt - Department of Finance February 14, 2009 Abstract: We test the conditional CAPM with time-varying forward-looking betas, assuming a two-state model for the market risk premium. For market state identification we employ a recursive Markov-switching model based on a forward-looking Sentiment factor. The empirical results for our sample of S&P500 constituents for the period from 1996 to 2007 show that in 'good' states of the economy the classical CAPM with just the market factor is able to explain the cross-section of expected returns very well, while in 'bad' states firm characteristics like size and book-to-market become relevant. Our estimated probabilities for good and bad states are furthermore able to predict the market risk premium one period into the future.
Number of Pages in PDF File: 48 Keywords: conditional CAPM, regime switching, forward-looking betas, sentiment, implied correlations JEL Classification: G11, G12, G14, G17 working papers seriesDate posted: February 14, 2009 ; Last revised: March 18, 2009Suggested CitationContact Information
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