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Asset pricing and consumption-portfolio choice with recursive utility and unspanned risk

机译:具有递归效用和未扩展风险的资产定价和消费组合选择

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摘要

We study consumption-portfolio and asset pricing frameworks with recursive preferences and unspanned risk. We show that in both cases, portfolio choice and asset pricing, the value function of the investor/representative agent can be characterized by a specific semilinear partial differential equation. To date, the solution to this equation has mostly been approximated by Campbell-Shiller techniques, without addressing general issues of existence and uniqueness. We develop a novel approach that rigorously constructs the solution by a fixed point argument. We prove that under regularity conditions a solution exists and establish a fast and accurate numerical method to solve consumption-portfolio and asset pricing problems with recursive preferences and unspanned risk. Our setting is not restricted to affine asset price dynamics. Numerical examples illustrate our approach.
机译:我们研究具有递归偏好和非跨度风险的消费组合和资产定价框架。我们表明,在投资组合选择和资产定价这两种情况下,投资者/代理人的价值函数都可以通过特定的半线性偏微分方程来表征。迄今为止,该方程的解法大多是通过Campbell-Shiller技术来近似的,没有解决存在性和唯一性的一般问题。我们开发了一种新颖的方法,该方法通过定点参数严格构造了解决方案。我们证明了在规则条件下存在一个解决方案,并建立了一种快速准确的数值方法来解决具有递归偏好和非跨度风险的消费组合和资产定价问题。我们的设置不仅限于仿射资产价格动态。数值例子说明了我们的方法。

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