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Equilibrium in Insurance Markets With Adverse Selection When Insurers Pay Policy Dividends

机译:保险公司支付保单红利时逆向选择在保险市场中的均衡

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We show that an equilibrium always exists in the Rothschild-Stiglitz insurance market model with adverse selection and an arbitrary number of risk types, when insurance contracts include policy dividend rules. The Miyazaki-Wilson-Spence state-contingent allocation is an equilibrium allocation (defined as a set of type-dependent lotteries sustained at a symmetric equilibrium of a market game), and it is the only one when out-of-equilibrium beliefs satisfy a robustness criterion. It is shown that stock insurers and mutuals may coexist, with stock insurers offering insurance coverage at actuarial price and mutuals cross-subsidizing risks.
机译:我们显示,当保险合同包括保单红利规则时,罗斯柴尔德-斯蒂格利茨(Rothschild-Stiglitz)保险市场模型中始终存在逆向选择和任意数量风险类型的均衡。 Miyazaki-Wilson-Spence状态偶发分配是一种均衡分配(定义为在市场博弈的对称均衡下维持的一组与类型相关的彩票),并且它是唯一一种在均衡状态下的信念满足以下条件的分配:稳健性标准。结果表明,股票保险公司和共同体可能并存,股票保险公司以精算价提供保险,而共同体则交叉补贴风险。

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