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Speculative Securities


  • Rohit Rahi


  • José Marín


A speculative security is an asset whose payoff depends on a random shock uncorrelated with economic fundamentals (a sunspot) about which some traders have superior information. In this paper we show that agents may find it desirable to trade such a security in spite of the fact that it is a poorer hedge against their endowment risks at the time of trade, and has an associated adverse selection cost. In the specific institutional setting of innovation of futures contracts, we show that a futures exchange may not have an incentive to introduce a speculative security even when all traders favor it.

Suggested Citation

  • Rohit Rahi & José Marín, 1997. "Speculative Securities," FMG Discussion Papers dp268, Financial Markets Group.
  • Handle: RePEc:fmg:fmgdps:dp268

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    References listed on IDEAS

    1. Rahi Rohit, 1995. "Optimal Incomplete Markets with Asymmetric Information," Journal of Economic Theory, Elsevier, vol. 65(1), pages 171-197, February.
    2. 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.
    3. James Dow, 2003. "Informed Trading, Investment, and Welfare," The Journal of Business, University of Chicago Press, vol. 76(3), pages 439-454, July.
    4. Hara Chiaki, 1995. "Commission-Revenue Maximization in a General Equilibrium Model of Asset Creation," Journal of Economic Theory, Elsevier, vol. 65(1), pages 258-298, February.
    5. Hirshleifer, Jack, 1971. "The Private and Social Value of Information and the Reward to Inventive Activity," American Economic Review, American Economic Association, vol. 61(4), pages 561-574, September.
    6. Rohit Rahi, 1996. "Adverse Selection and Security Design," Review of Economic Studies, Oxford University Press, vol. 63(2), pages 287-300.
    7. José M. Marín & Rohit Rahi, 2000. "Information Revelation and Market Incompleteness," Review of Economic Studies, Oxford University Press, vol. 67(3), pages 563-579.
    8. Peter DeMarzo & Darrell Duffie, 1999. "A Liquidity-Based Model of Security Design," Econometrica, Econometric Society, vol. 67(1), pages 65-100, January.
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    Cited by:

    1. Norvald Instefjord & Kouji Sasaki, 2008. "Informational leverage: the problem of noise traders," Annals of Finance, Springer, vol. 4(4), pages 455-480, October.
    2. Jón Daníelsson & Bjørn Jorgensen & Casper Vries & Xiaoguang Yang, 2008. "Optimal portfolio allocation under the probabilistic VaR constraint and incentives for financial innovation," Annals of Finance, Springer, vol. 4(3), pages 345-367, July.
    3. Corina Haita-Falah, 2016. "Uncertainty and speculators in an auction for emissions permits," Journal of Regulatory Economics, Springer, vol. 49(3), pages 315-343, June.
    4. Juan Dubra & Helios Herrera, 2002. "Market Participation, Information and Volatility," Working Papers 0206, Centro de Investigacion Economica, ITAM.
    5. Instefjord, Norvald, 2006. "Forecasting risk, informed speculation, and financial innovation," Journal of Financial Intermediation, Elsevier, vol. 15(1), pages 67-85, January.

    More about this item

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading


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