Momentum Crashes

51 Pages Posted: 26 Aug 2014

See all articles by Kent D. Daniel

Kent D. Daniel

Columbia Business School - Finance and Economics; National Bureau of Economic Research (NBER)

Tobias J. Moskowitz

Yale University, Yale SOM; AQR Capital; National Bureau of Economic Research (NBER)

Multiple version iconThere are 5 versions of this paper

Date Written: August 24, 2014

Abstract

Despite their strong positive average returns across numerous asset classes, momentum strategies can experience infrequent and persistent strings of negative returns. These momentum crashes are partly forecastable. They occur in "panic'' states -- following market declines and when market volatility is high -- and are contemporaneous with market rebounds. We show that the low ex-ante expected returns in panic states are consistent with a conditionally high premium attached to the option-like payoffs of past losers. An implementable dynamic momentum strategy based on forecasts of momentum's mean and variance approximately doubles the alpha and Sharpe Ratio of a static momentum strategy, and is not explained by other factors. These results are robust across multiple time periods, international equity markets, and other asset classes.

Suggested Citation

Daniel, Kent D. and Moskowitz, Tobias J., Momentum Crashes (August 24, 2014). Columbia Business School Research Paper No. 14-36. Available at SSRN: https://ssrn.com/abstract=2486272 or http://dx.doi.org/10.2139/ssrn.2486272

Kent D. Daniel (Contact Author)

Columbia Business School - Finance and Economics ( email )

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New York, NY 10027
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212-854-4679 (Phone)
212-854-4679 (Fax)

HOME PAGE: http://kentdaniel.net/

National Bureau of Economic Research (NBER)

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Cambridge, MA 02138
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Tobias J. Moskowitz

Yale University, Yale SOM ( email )

New Haven, CT 06520
United States

HOME PAGE: http://som.yale.edu/tobias-j-moskowitz

AQR Capital ( email )

Greenwich, CT
United States

National Bureau of Economic Research (NBER)

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

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