Market participation in a two-sector Diamond-Dybvig economy

Ettore Panetti

Studies in Economics and Finance, 2016, vol. 33, issue 4, 660-678

Abstract: Purpose - This paper aims to reconsider the role of asset-market participation in Diamond-Dybvig economies, to reconcile the existence of asset markets as a channel for financial integration with the distortions that they might impose on the banking system. Design/methodology/approach - The paper is a two-sector Diamond-Dybvig model of financial intermediation, with comparative advantages in the investment technologies, and introduces the possibility for the depositors to participate in an economy-wide asset market, when they can trade a bond without being observed by their banks. Findings - The two-sector competitive banking equilibrium with hidden trades is not equivalent to autarky, is the unique Nash equilibrium of a “participation game” and is a constrained efficient. Originality/value - This paper is the first to characterize the equilibrium of a two-sector Diamond-Dybvig economy with hidden trading in the asset market, and produces novel results, in contrast to the existing literature, with respect to the rationale for the existence of a financial system, its coexistence with asset markets and its efficiency. These conclusions also have important implications in terms of policy, in particular, regarding the case for the introduction of financial regulation.

Keywords: Efficiency; Financial intermediation; Hidden trades; Market participation (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:eme:sefpps:v:33:y:2016:i:4:p:660-678

DOI: 10.1108/SEF-06-2015-0160

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