Asset Pricing with Liquidity Risk∗
Asset Pricing with Liquidity Risk∗ Viral V. Acharyay and Lasse Heje Pedersenz First Version: July 10, 2000 Current Version: September 24, 2004 Abstract This paper solves explicitly an equilibrium asset pricing model with liq- uidity risk — the risk arising from unpredictable changes in liquidity over time. In our liquidity-adjusted capital asset pricing model, a security's re- quired return depends on its expected liquidity as well as on the covariances of its own return and liquidity with market return and market liquidity. In addition, the model shows how a negative shock to a security's liquidity, if it is persistent, results in low contemporaneous returns and high predicted future returns. The model provides a simple, unified framework for under- standing the various channels through which liquidity risk may affect asset prices. Our empirical results shed light on the total and relative economic significance of these channels. ∗We are grateful for conversations with Andrew Ang, Joseph Chen, Sergei Davydenko, Fran- cisco Gomes, Joel Hasbrouck, Andrew Jackson, Tim Johnson, Martin Lettau, Anthony Lynch, Stefan Nagel, Lubos Pastor, Tano Santos, Dimitri Vayanos, Luis Viceira, Jeff Wurgler, and semi- nar participants at London Business School, London School of Economics, New York University, the National Bureau of Economic Research (NBER) Summer Institute 2002, the Five Star Confer- ence 2002, Western Finance Association Meetings 2003, and the Texas Finance Festival 2004. We are especially indebted to Yakov Amihud and to an anonymous referee for help and many valuable suggestions. All errors remain our own. yAcharya is at London Business School and is a Research Affiliate of the Centre for Eco- nomic Policy Research (CEPR).
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