The Market Price of Aggregate Risk and the Wealth Distribution
在有限负债和抵押约束下，引入由财富分布增长率衡量的流动性风险，解释了股权风险溢价的时变特征，对资产定价和宏观金融研究有参考价值。
We introduce limited liability in a model with a continuum of ex ante identical agents who face aggregate and idiosyncratic income risk. These agents can trade a complete menu of contingent claims, but they cannot commit to honor their promises, and their shares in a Lucas tree serve as collateral to back up their state-contingent promises. The limited-liability option gives rise to a second risk factor, in addition to aggregate consumption growth risk. This liquidity risk is created by binding solvency constraints, and it is measured by the growth rate of one moment of the wealth distribution. The economy is said to experience a negative liquidity shock when this growth rate is high and a large fraction of agents faces severely binding solvency constraints. The adjustment to the Breeden-Lucas stochastic discount factor induces substantial time variation in equity risk-premims that is consistent with the data at business cycle frequencies. The Author 2009. Published by Oxford University Press on behalf of The Society for Financial Studies. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org, Oxford University Press.