A Multiplier Approach to Understanding the Macro Implications of Household Finance

YiLi Chien, Harold Cole and Hanno Lustig

The Review of Economic Studies, 2011, vol. 78, issue 1, 199-234

Abstract: Our paper examines the impact of heterogeneous trading technologies for households on asset prices and the distribution of wealth. We distinguish between passive traders who hold fixed portfolios of stocks and bonds, and active traders who adjust their portfolios to changes in expected returns. To solve the model, we derive an optimal consumption sharing rule that does not depend on the trading technology, and we derive an aggregation result for state prices. This allows us to solve for equilibrium prices and allocations without having to search for market clearing prices in each asset market separately. We show that the fraction of total wealth held by active traders, not the fraction held by all participants, is critical for asset prices because only these traders respond to variation in state prices and hence absorb the residual aggregate risk created by non-participants. We calibrate the heterogeneity in trading technologies to match the equity premium and the risk-free rate. The calibrated model reproduces the skewness and kurtosis of the wealth distribution in the data. In contrast to existing asset pricing models with heterogeneous agents, our model matches the high volatility of returns and the low volatility of the risk-free rate. Copyright 2011, Oxford University Press.

Date: 2011
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Working Paper: A Multiplier Approach to Understanding the Macro Implications of Household Finance (2007)
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