The Significance of the Market Portfolio
Arguments for creating a market to allow trading the portfolio of all endowments in the entire world, the market portfolio: are considered. This world share market would represent a radical innovation, since at the present time only a small fraction of world endowments are traded. Using a stochastic endowment economy where preferences are mean variance. It is shown that creating such a market may be justified in terms of its contribution to social welfare. It is also argued that creating a market for world shares is attractive for certain reasons of robustness and simplicity. Article published by Oxford University Press on behalf of the Society for Financial Studies in its journal, The Review of Financial Studies.
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Volume (Year): 13 (2000)
Issue (Month): 2 ()
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- Magill, Michael & Shafer, Wayne, 1991. "Incomplete markets," Handbook of Mathematical Economics, in: W. Hildenbrand & H. Sonnenschein (ed.), Handbook of Mathematical Economics, edition 1, volume 4, chapter 30, pages 1523-1614 Elsevier.
- Duffie Darrell & Rahi Rohit, 1995. "Financial Market Innovation and Security Design: An Introduction," Journal of Economic Theory, Elsevier, vol. 65(1), pages 1-42, February.
- Gyutaeg Oh, 1996. "Some Results in the CAPM with Nontraded Endowments," Management Science, INFORMS, vol. 42(2), pages 286-293, February.
- Cass, David & Chichilnisky, Graciela & Wu, Ho-Mou, 1996. "Individual Risk and Mutual Insurance," Econometrica, Econometric Society, vol. 64(2), pages 333-41, March.
- Demange Gabrielle & Laroque Guy, 1995. "Optimality of Incomplete Markets," Journal of Economic Theory, Elsevier, vol. 65(1), pages 218-232, February.
- Geanakoplos, John, 1990. "An introduction to general equilibrium with incomplete asset markets," Journal of Mathematical Economics, Elsevier, vol. 19(1-2), pages 1-38.
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