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Implementation with Securities

  • Rahul Deb
  • Debasis Mishra

We study mechanism design in a setting where agents know their types but are uncertain about the utility from any alternative. The final realized utility of each agent is observed by the principal and can be contracted upon. In such environments, the principal is not restricted to using only transfers but can employ security contracts which determine each agent's payoff as a function of their realized utility and the profile of announced types. We show that using security contracts instead of transfers expands the set of (dominant strategy) implementable social choice functions. Our main result is that in a finite type space, every social choice function that can be implemented using a security contract can also be implemented using a royalty contract. Royalty contracts are simpler and commonly used security contracts, in which agents initially pay a transfer and keep a fraction of their realized utility. We also identify a condition called acyclicity that is necessary and sufficient for implementation in these environments.

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Paper provided by University of Toronto, Department of Economics in its series Working Papers with number tecipa-484.

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Length: Unknown pages
Date of creation: 22 Apr 2013
Date of revision:
Handle: RePEc:tor:tecipa:tecipa-484
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  1. Debasis Mishra & Souvik Roy, 2011. "Implementation in multidimensional dichotomous domains," Indian Statistical Institute, Planning Unit, New Delhi Discussion Papers 11-15, Indian Statistical Institute, New Delhi, India.
  2. Carbajal, Juan Carlos & McLennan, Andrew & Tourky, Rabee, 2013. "Truthful implementation and preference aggregation in restricted domains," Journal of Economic Theory, Elsevier, vol. 148(3), pages 1074-1101.
  3. Yeon-Koo Che & Jinwoo Kim, 2010. "Bidding with Securities: Comment," American Economic Review, American Economic Association, vol. 100(4), pages 1929-35, September.
  4. repec:bla:restud:v:55:y:1988:i:3:p:409-29 is not listed on IDEAS
  5. Donald J. Brown & Caterina Calsamiglia, 2005. "The Nonparametric Approach to Applied Welfare Analysis," Cowles Foundation Discussion Papers 1507, Cowles Foundation for Research in Economics, Yale University.
  6. Claudio Mezzetti, 2004. "Mechanism Design with Interdependent Valuations: Efficiency," Econometrica, Econometric Society, vol. 72(5), pages 1617-1626, 09.
  7. John G. Riley, 1986. "Ex Post Information in Auctions," UCLA Economics Working Papers 367, UCLA Department of Economics.
  8. Sushil Bikhchandani & Shurojit Chatterji & Ron Lavi & Ahuva Mu'alem & Noam Nisan & Arunava Sen, 2006. "Weak Monotonicity Characterizes Deterministic Dominant-Strategy Implementation," Econometrica, Econometric Society, vol. 74(4), pages 1109-1132, 07.
  9. Laffont, Jean-Jacques & Tirole, Jean, 1986. "Using Cost Observation to Regulate Firms," Journal of Political Economy, University of Chicago Press, vol. 94(3), pages 614-41, June.
  10. Vohra,Rakesh V., 2011. "Mechanism Design," Cambridge Books, Cambridge University Press, number 9781107004368.
  11. Vohra,Rakesh V., 2011. "Mechanism Design," Cambridge Books, Cambridge University Press, number 9780521179461.
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