Hedging against the government: a solution to the home asset bias puzzle

Abstract

We explain why international nominal bonds and equity portfolios are biased domestically. In our model, holding domestic government nominal debt provides a hedge against shocks to bond returns and the impact on taxes they induce. For this result, only two features are essential: nominal risk and taxes only on domestic agents. A third feature explains domestically biased equity holdings: government spending falls on domestic goods. Then, an increase in government spending raises the returns on domestic equity, providing a hedge against the subsequent increase in taxes. A calibrated version of the model predicts asset holdings that quantitatively match the data.