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Intra-and International Risk-Sharing in the Short Run and the Long Run

  • Sascha O. Becker
  • Mathias Hoffmann

We investigate empirically how industrialized countries and U.S. states share consumption risk at horizons between one and thirty years. U.S. federal states share about 50 percent 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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Paper provided by CESifo Group Munich in its series CESifo Working Paper Series with number 1111.

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Date of creation: 2003
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Handle: RePEc:ces:ceswps:_1111
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  1. Hodrick, Robert J, 1992. "Dividend Yields and Expected Stock Returns: Alternative Procedures for Inference and Measurement," Review of Financial Studies, Society for Financial Studies, vol. 5(3), pages 357-86.
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  31. repec:spo:wpecon:info:hdl:2441/765 is not listed on IDEAS
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