Country Size, Currency Unions, and International Asset Returns
Differences in real interest rates across developed economies are puzzlingly large and persistent. I propose a simple explanation: Bonds issued in the currencies of larger economies are expensive because they insure against shocks that affect a larger fraction of the world economy. I show that differences in the size of economies indeed explain a large fraction of the cross-sectional variation in currency returns. The data also support a number of additional implications of the model: The introduction of a currency union lowers interest rates in participating countries and stocks in the non-traded sector of larger economies pay lower expected returns.
Tarek A. Hassan, 2013. "Country Size, Currency Unions, and International Asset Returns," Journal of Finance, American Finance Association, vol. 68(6), pages 2269-2308, December. citation courtesy of