Abstract

http://ssrn.com/abstract=1572738
 
 

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Can Time-Varying Risk of Rare Disasters Explain Aggregate Stock Market Volatility?


Jessica A. Wachter


University of Pennsylvania - Finance Department; National Bureau of Economic Research (NBER)

August 7, 2012

Journal of Finance, Forthcoming
AFA 2011 Denver Meetings Paper

Abstract:     
Why is the equity premium so high, and why are stocks so volatile? Why are stock returns in excess of government bill rates predictable? This paper proposes an answer to these questions based on a time-varying probability of a consumption disaster. In the model, aggregate consumption follows a normal distribution with low volatility most of the time, but with some probability of a consumption realization far out in the left tail. The possibility of this poor outcome substantially increases the equity premium, while time-variation in the probability of this outcome drives high stock market volatility and excess return predictability.

Number of Pages in PDF File: 70

Keywords: Rare disasters, Peso problem, Excess volatility

JEL Classification: G12

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Date posted: March 18, 2010 ; Last revised: August 8, 2012

Suggested Citation

Wachter, Jessica A., Can Time-Varying Risk of Rare Disasters Explain Aggregate Stock Market Volatility? (August 7, 2012). Journal of Finance, Forthcoming; AFA 2011 Denver Meetings Paper. Available at SSRN: http://ssrn.com/abstract=1572738 or http://dx.doi.org/10.2139/ssrn.1572738

Contact Information

Jessica A. Wachter (Contact Author)
University of Pennsylvania - Finance Department ( email )
The Wharton School
3620 Locust Walk
Philadelphia, PA 19104
United States
215-898-7634 (Phone)
215-898-6200 (Fax)

National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
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References:  60
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