A Portfolio Theory of International Capital Flows
Abstract
Recent global imbalances and large gross external financial movements have raised interest in modeling the relationship between international financial market structure and capital flows. This paper constructs a model in which the composition of national portfolios is an essential element in facilitating international capital flows. Each country chooses an optimal portfolio in face of real and nominal risk. Current account deficits are financed by net capital flows which reflect differential movements in the holdings of gross external assets and liabilities. A country experiencing a current account deficit will be accumulating both gross external liabilities and gross external assets. Net capital flows generate movements in risk premiums such that the rate of return on a debtor country's gross liabilities is lower than the return on its gross assets. This ensures stability of the world wealth distribution. An attractive feature of the model is that portfolio shares, returns, and the wealth distribution can be characterized analytically. A calibrated version of the model can match quite well the observed measures of gross and net external assets and liabilities for the US economy.Download Info
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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 5746.Length:
Date of creation: Jul 2006
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Handle: RePEc:cpr:ceprdp:5746
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Keywords: current account; international capital flows; portfolio;Other versions of this item:
- Michael B. Devereux & Makoto Saito, 2006. "A Portfolio Theory of International Capital Flows," The Institute for International Integration Studies Discussion Paper Series iiisdp124, IIIS.
- Michael B. Devereux & Makoto Saito, 2006. "A Portfolio Theory of International Capital Flows," Working Papers 112006, Hong Kong Institute for Monetary Research.
- F32 - International Economics - - International Finance - - - Current Account Adjustment; Short-term Capital Movements
- F34 - International Economics - - International Finance - - - International Lending and Debt Problems
- F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics
This paper has been announced in the following NEP Reports:
- NEP-ALL-2006-10-28 (All new papers)
- NEP-CBA-2006-10-28 (Central Banking)
- NEP-FIN-2006-10-28 (Finance)
- NEP-IFN-2006-10-28 (International Finance)
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