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Options, Sunspots, and the Creation of Uncertainty

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  • Bowman, David
  • Faust, Jon

Abstract

The authors present two examples in which the addition of an option market leads to sunspot equilibria despite the fact that no sunspot equilibria exist without the market. These examples highlight limitations in two prevalent views of option markets. It is often assumed that option markets help complete otherwise incomplete markets. The authors demonstrate that they can instead increase the number of events agents wish to insure against. As in Fischer Black and Myron Scholes (1973), it is often assumed that option markets are redundant. The authors demonstrate that an option market may not be redundant even when markets were complete before its introduction. Copyright 1997 by the University of Chicago.

Suggested Citation

  • Bowman, David & Faust, Jon, 1997. "Options, Sunspots, and the Creation of Uncertainty," Journal of Political Economy, University of Chicago Press, vol. 105(5), pages 957-975, October.
  • Handle: RePEc:ucp:jpolec:v:105:y:1997:i:5:p:957-75
    DOI: 10.1086/262100
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    References listed on IDEAS

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    1. Friesen, Peter H, 1979. "The Arrow-Debreu Model Extended to Financial Markets," Econometrica, Econometric Society, vol. 47(3), pages 689-707, May.
    2. Brown, Donald J & Ross, Stephen A, 1991. "Spanning, Valuation and Options," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 1(1), pages 3-12, January.
    3. Balasko, Yves & Cass, David, 1989. "The Structure of Financial Equilibrium with Exogenous Yields: The Case of Incomplete Markets," Econometrica, Econometric Society, vol. 57(1), pages 135-162, January.
    4. Black, Fischer & Scholes, Myron S, 1973. "The Pricing of Options and Corporate Liabilities," Journal of Political Economy, University of Chicago Press, vol. 81(3), pages 637-654, May-June.
    5. Radner, Roy, 1972. "Existence of Equilibrium of Plans, Prices, and Price Expectations in a Sequence of Markets," Econometrica, Econometric Society, vol. 40(2), pages 289-303, March.
    6. Cox, John C. & Ross, Stephen A. & Rubinstein, Mark, 1979. "Option pricing: A simplified approach," Journal of Financial Economics, Elsevier, vol. 7(3), pages 229-263, September.
    7. Krasa, Stefan & Werner, Jan, 1991. "Equilibria with options: Existence and indeterminacy," Journal of Economic Theory, Elsevier, vol. 54(2), pages 305-320, August.
    8. Green, Richard C. & Jarrow, Robert A., 1987. "Spanning and completeness in markets with contingent claims," Journal of Economic Theory, Elsevier, vol. 41(1), pages 202-210, February.
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    Cited by:

    1. François Grand & Xavier Ragot, 2016. "Incomplete markets and derivative assets," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 62(3), pages 517-545, August.
    2. Oehmke, Martin & Zawadowski, Adam, 2015. "Synthetic or real? The equilibrium effects of credit default swaps on bond markets," LSE Research Online Documents on Economics 84511, London School of Economics and Political Science, LSE Library.
    3. Galvani, Valentina & Plourde, André, 2010. "Portfolio diversification in energy markets," Energy Economics, Elsevier, vol. 32(2), pages 257-268, March.
    4. Gunther Capelle-Blancard, 2010. "Are derivatives dangerous?," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00605908, HAL.
    5. J. Barkley Rosser, 2001. "Alternative Keynesian and Post Keynesian Perspective on Uncertainty and Expectations," Journal of Post Keynesian Economics, Taylor & Francis Journals, vol. 23(4), pages 545-566, July.
    6. Galvani, Valentina, 2007. "A note on spanning with options," Mathematical Social Sciences, Elsevier, vol. 54(1), pages 106-114, July.

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