International Portfolio Allocation under Model Uncertainty
AbstractThis paper proposes an explanation of the international home bias in equity based on ambiguity aversion. Doubts imply an additional hedging motif driven by the interaction between real exchange rate risk and ambiguity aversion. What matters is the long-run as opposed to the short-run risk. Domestic equity is a good hedge with respect to long-run real exchange rate risk even when bonds are traded. The higher is the degree of ambiguity aversion, the stronger is the home bias. We identify the degree of ambiguity aversion with detection error probabilities and show that our framework is able to explain a large share of the observed US home bias, as well as other stylized facts on US cross-border asset holdings. Without doubts, a standard open-economy macroeconomic model would be unsuccessful along all these dimensions. An older version of this paper is available at http://www.nber.org/papers/w14734.rev0.pdf to NBER subscribers and those in domains eligible for free downloads. Individual purchasers of papers are directed to email email@example.com or to call 617 588-1405 to purchase the older version.
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Bibliographic InfoPaper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 14734.
Date of creation: Feb 2009
Date of revision:
Publication status: published as Pierpaolo Benigno & Salvatore Nistico, 2012. "International Portfolio Allocation under Model Uncertainty," American Economic Journal: Macroeconomics, American Economic Association, vol. 4(1), pages 144-89, January.
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Other versions of this item:
- Pierpaolo Benigno & Salvatore Nistic�, 2012. "International Portfolio Allocation under Model Uncertainty," American Economic Journal: Macroeconomics, American Economic Association, vol. 4(1), pages 144-89, January.
- F3 - International Economics - - International Finance
- G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
- G15 - Financial Economics - - General Financial Markets - - - International Financial Markets
This paper has been announced in the following NEP Reports:
- NEP-ALL-2009-02-22 (All new papers)
- NEP-CBA-2009-02-22 (Central Banking)
- NEP-DGE-2009-02-22 (Dynamic General Equilibrium)
- NEP-OPM-2009-02-22 (Open Economy Macroeconomics)
- NEP-UPT-2009-02-22 (Utility Models & Prospect Theory)
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