Learning by Trading in Infinite Horizon Strategic Market Games with Default

Sonja Brangewitz () and Gaël Giraud
Additional contact information
Sonja Brangewitz: Department of Economics - University of Paderborn

Documents de travail du Centre d'Economie de la Sorbonne from Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne

Abstract: We study the consequences of dropping the perfect competition assumption in a standard infinite horizon model with infinitely-lived traders and real collateralized assets, together with one additional ingredient: information among players is asymmetric and monitoring is incomplete. The key insight is that trading assets is not only a way to hedge oneself against uncertainty and to smooth consumption across time: it also enables learning information. Conversely, defaulting now becomes strategic: certain players may manipulate prices so as to provoke a default in order to prevent their opponents from learning. We focus on learning equilibria, at the end of which no player has incorrect beliefs — not because those players with heterogeneous beliefs were eliminated from the market (although default is possible at equilibrium) but because they have taken time to update their prior belief. We prove a partial Folk theorem à la Wiseman (2011) of the following form: for any function that maps each state of the world to a sequence of feasible and strongly individually rational allocations, and for any degree of precision, there is a perfect Bayesian equilibrium in which patient players learn the realized state with this degree of precision and achieve a payoff close to the one specified for each state

Keywords: Strategic market games; infinite horizon; incomplete markets; collateral; incomplete information; learning; adverse selection (search for similar items in EconPapers)
JEL-codes: C72 D43 D52 G12 G14 G18 (search for similar items in EconPapers)
Date: 2012-09
New Economics Papers: this item is included in nep-com, nep-cta and nep-gth
References: View references in EconPapers View complete reference list from CitEc
Citations:

There are no downloads for this item, see the EconPapers FAQ for hints about obtaining it.

Related works:
Working Paper: Learning by Trading in Infinite Horizon Strategic Market Games with Default (2013)
Working Paper: Learning by Trading in Infinite Horizon Strategic Market Games with Default (2012)
Working Paper: Learning by Trading in Infinite Horizon Strategic Market Games with Default (2012)
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:mse:cesdoc:12062

Access Statistics for this paper

More papers in Documents de travail du Centre d'Economie de la Sorbonne from Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne Contact information at EDIRC.
Bibliographic data for series maintained by Lucie Label ().