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Intra- and international risk-sharing in the short run and the long run
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0014-2921
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European economic review, 2006, Vol. 50, No. 3, pp. 777-806
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BECKER, Sascha, HOFFMANN, Mathias, Intra- and international risk-sharing in the short run and the long run, European economic review, 2006, Vol. 50, No. 3, pp. 777-806 - https://hdl.handle.net/1814/52149
Abstract
We investigate empirically how industrialized countries and US states share consumption risk at horizons between 1 and 30 years. US federal states share about 50% of their permanent idiosyncratic risk through cross-state capital income flows. While insurance against transitory fluctuations in output is virtually complete, OECD countries do not share any of their permanent idiosyncratic risk. Our results suggest that purely transaction cost based theories cannot explain the home bias, since the potential welfare gains from insurance against permanent shocks would by far outweigh that of insuring against transitory variation. We conclude that permanent and transitory shocks constitute two qualitatively different kinds of risk and that various forms of endogenous market incompleteness may render permanent shocks a lot harder to insure, in particular at the international level.
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Available online 25 February 2005
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Based on parts of the author’s EUI PhD thesis, 2001