Endogenous insolvency in the Rothschild-Stiglitz model

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<title>Endogenous insolvency in the Rothschild-Stiglitz model</title>
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<namePart>Mimra, Wanda</namePart>
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<namePart>Wambach, Achim</namePart>
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<abstract displayLabel="Summary">Even 30 years after Rothschild and Stiglitz's (1976) seminal work on competitive insurance markets with adverse selection, existence and characterization of the equilibrium outcome are still an open issue. We model a basic extension to the Rothschild and Stiglitz model: we endogenize up-front capital of insurers. Under limited liability, low up-front capital gives rise to an aggregate endogenous insolvency risk, which introduces an externality among customers of an insurer (Faynzilberg, 2006). It is shown that an equilibrium with the second-best efficient Miyazaki-Wilson-Spence allocation always exists.</abstract>
<note type="statement of responsibility">Wanda Mimra, Achim Wambach</note>
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<topic>Mercado de seguros</topic>
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<topic>Modelos matemáticos</topic>
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<subject xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080579258">
<topic>Cálculo actuarial</topic>
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<subject xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080558949">
<topic>Insolvencia</topic>
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<subject xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="MAPA20080599096">
<topic>Selección de riesgos</topic>
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<topic>Control de riesgos</topic>
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<title>The Journal of risk and insurance</title>
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<publisher>Nueva York : The American Risk and Insurance Association, 1964-</publisher>
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<identifier type="issn">0022-4367</identifier>
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<text>01/03/2019 Volumen 86 Número 1 - marzo 2019 , p. 165-181</text>
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