• Media type: E-Article
  • Title: On competitive nonlinear pricing
  • Contributor: Attar, Andrea [Author]; Mariotti, Thomas [Author]; Salanié, François [Author]
  • Published: New Haven, CT: The Econometric Society, 2019
  • Language: English
  • DOI: https://doi.org/10.3982/TE2708
  • ISSN: 1555-7561
  • Keywords: D82 ; limit-order book ; D86 ; D43 ; competing mechanisms ; Adverse selection
  • Origination:
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  • Description: We study a discriminatory limit-order book in which market makers compete in nonlinear tariffs to serve a privately informed insider. Our model allows for general nonparametric specifications of preferences and arbitrary discrete distributions for the insider's private information. Adverse selection severely restricts equilibrium outcomes: in any pure-strategy equilibrium with convex tariffs, pricing must be linear and at most one type can trade, leading to an extreme form of market breakdown. As a result, such equilibria only exist under exceptional circumstances that we fully characterize. These results are strikingly different from those of existing analyses that postulate a continuum of types. The two approaches can be reconciled when we consider E-equilibria of games with a large number of market makers or a large number of types.
  • Access State: Open Access
  • Rights information: Attribution - Non Commercial (CC BY-NC)