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- W1539901983 abstract "Using a simple dynamic consumption-based asset pricing model, this paper explores the implications of a representative investor with smooth ambiguity averse preferences [Klibano¤, Marinacci and Mukerji, Econometrica (2005)] and provides a comparative analysis of risk aversion and ambiguity aversion. The perception of ambiguity is described by a hidden Markovian consumption growth process. The hidden states di¤er both for the mean and the volatility. We show that the ambiguity-averse investor downweights high-mean states in favor of low-mean ones. However, such distortion appears much stronger in low-volatility regimes: high volatility attenuates the distortion due to ambiguity concerns. It follows that (i) ambiguity aversion always implies higher equity premia but sustained levels of ambiguity aversion do not help explaining the high volatility of the equity premium observed in the data (volatility puzzle); (ii) our calibrated model can match the moments of the equity premium and risk free rate and can generate asset-price stylized facts like a procyclical price-dividend ratio and countercyclical conditional equity premia; however, (iii) high levels of ambiguity aversion, necessary to explain high equity returns, produce counterfactual price-dividend ratio time series across volatility states." @default.
- W1539901983 created "2016-06-24" @default.
- W1539901983 creator A5088943703 @default.
- W1539901983 date "2011-01-01" @default.
- W1539901983 modified "2023-10-05" @default.
- W1539901983 title "Ambiguity and Volatility: Asset Pricing Implications" @default.
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- W1539901983 doi "https://doi.org/10.2139/ssrn.1808844" @default.
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