This study proposes that heterogeneous household portfolio choices within a country and across countries offer an explanation for global imbalances. We construct a stochastic growth multi-country model in which heterogeneous agents face the following restrictions on asset trade. First, the...

Our paper investigates whether the valuation effect caused by a large risk premium and a low risk-free rate can help to explain the enormous US current account and trade deficit observed in the past decade. To answer this question, we set up an endowment growth model in which investors are...

Our paper investigates whether the valuation effect caused by a large risk premium and a low risk-free rate can help to explain the enormous US current account and trade deficit observed in the past decade. To answer this question, we set up an endowment growth model in which investors are...

into physical capital in a number of countries. However, the gains are found to be quite small.

exchange rate flexibility rises when country size falls.

households with better insurance against idiosyncratic risk adopt more `aggressive' trading strategies in equilibrium.

We study optimal capital taxation in a limited commitment environment. Our environment consists of a continuum of households with idiosyncratic labor shocks, who have access to a complete contingent claims market. Financial contracts are not perfectly enforceable; as in Kehoe and Levine (1993),...

We study optimal capital taxation under limited commitment. We prove that the optimal tax rate on capital income should be positive in steady state and should be increasing over time provided that full risk-sharing is not feasible. In a limited commitment environment, a one unit increase of...

U.S. financial institutions have traditionally insured the typical U.S. household against persistent shocks to U.S. inflation through the U.S. mortgage market. The bond risk premium is effectively the price of long-run inflation risk insurance charged by these U.S. intermediaries. Starting in...