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Title: Rationalizing Momentum Interactions
Authors: Avramov, Doron
Hore, Satadru
Type: Working Paper
Keywords: momentum profitability
credit risk
equilibrium asset pricing
Issue Date: 2007
Citation: Avramov, Doron, and Satadru Hore, 2007, Rationalizing Momentum Interactions.
Abstract: Momentum profitability concentrates in high information uncertainty and high credit risk firms and is virtually nonexistent otherwise. This paper rationalizes such momentum interactions in equilibrium asset pricing. In our paradigm, dividend growth is mean reverting, expected dividend growth is stochastic and highly persistent, the representative agent is endowed with stochastic differential utility of Duffie and Epstein (1992), and leverage, which proxies for credit risk, is modeled based on the Abel's (1999) formulation. Using reasonable risk aversion levels we produce the observational momentum effects. In particular, momentum profitability is especially high in the interaction between high levered and risky cash flow firms. It rapidly deteriorates and ultimately disappears as leverage or cash flow risk diminishes.
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