• The editor in charge of this paper was George-Marios Angeletos.

  • Acknowledgments: We are grateful to Marios Angeletos, Holger Breinlich, Elhanan Helpman, Jean Imbs, Miklós Koren, Gyöngyi Lóránth, Alfonso Novales, Steve Redding, Silvana Tenreyro, three anonymous referees, and seminar participants at LSE, Valencia, Vienna, the “Europe and Financial Globalisation” Conference, the Royal Economic Society 2007 Conference, and the Spanish Finance Forum 2008 for helpful comments and discussions. All errors remain ours. Cuñat gratefully acknowledges financial support from Spain’s CICYT (SEJ 2005-01365 and ECO 2008-04669). Fons-Rosen gratefully acknowledges the support of the Fundación Rafael del Pino, of the Barcelona Graduate School of Economics and of the Government of Catalonia.

  • E-mail: (Cuñat); (Fons-Rosen)


We present a model of international portfolio choice based on cross-country differences in relative factor abundance. Countries have varying degrees of similarity in their factor endowment ratios, and are subject to aggregate productivity shocks. Risk-averse consumers can insure against these shocks by investing their wealth at home and abroad. In a many-good setup, the change in factor prices after a positive shock in a particular country provides insurance to countries that have dissimilar factor endowment ratios, but is bad news for countries with similar factor endowment ratios, since their incomes will worsen. Therefore countries with similar relative factor endowments have a stronger incentive to invest in one another for insurance purposes than countries with dissimilar endowments. The importance of this effect depends on the size of countries. Empirical evidence linking bilateral international equity investment positions to a proxy for relative factor endowments supports our theory: the similarity of host and source countries in their relative capital–labor ratios has a positive effect on the source country’s investment position in the host country. The effect of similarity is enhanced by the size of host countries.