Staff Report 9

Portfolio Autarky: A Welfare Analysis

Neil Wallace
John H. Kareken

Revised February 1, 1976

Abstract
Portfolio autarky obtains when residents of every country are prohibited from owning real assets located in other countries. Such a regime and a laissez-faire regime, both characterized by free trade in goods, are studied in a model whose resource and technology assumptions are those of the standard two-country, two- (nonreproducible) factor, two- (nonstorable) good model. But to ensure a market for assets (land), the model is peopled by overlapping generations; each two-period lived individual supplies one unit of labor only in the first period of his life. Unique equilibria are described and shown to exist, and, in terms of a “growth model” version of the Pareto criterion, laissez-faire is shown to be optimal and portfolio autarky to be nonoptimal.



Published In: Journal of International Economics (Vol. 7, No. 1, February 1977, pp. 19-43)

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