Oligopolistic Equilibrium and Financial Constraints

Beviá, Carmen; Corchon, Luis and Yasuda, Yosuke (September 2015) Oligopolistic Equilibrium and Financial Constraints. Former Series > Working Paper Series > IHS Economics Series 316, 33 p.


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We provide a model of dynamic duopoly in which firms face financial constraints and disappear when they are unable to fulfill them. We show that, in some cases, Cournot outputs are no longer supported in equilibrium, because if these outputs were set, a firm may have incentives to ruin the other. In these cases, standard grim-trigger strategies in which collusion is sustained by infinite reversion to Cournot outputs cannot be used. We show that there is a stationary Markov equilibrium in mixed strategies where predation occurs with a positive probability. We also obtain a modified "folk theorem". We show that any bankruptcy-free outputs (outputs in which no firm can drive another firm to bankruptcy without becoming bankrupt itself) that attain individually rational profits (reflecting bankruptcy consideration) can be supported by a subgame perfect Nash equilibrium when firms are sufficiently long-sighted.

Item Type: IHS Series
Keywords: Financial Constraints, Bankruptcy, Firm Behavior, Dynamic Games
Classification Codes (e.g. JEL): D2,D4,L1,L2
Date Deposited: 12 Oct 2015 14:09
Last Modified: 03 May 2024 11:01
URI: https://irihs.ihs.ac.at/id/eprint/3716

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