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Household risk aversion and portfolio choices

机译:家庭风险规避和投资组合选择

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摘要

In practice, stock investment is one of the most important decisions made by households. The primary goal of this paper is to explain family investment decisions under the assumptions of household member's preferences and efficient risk sharing based on the collective household model. In particular, by examining the absolute (relative) risk aversion of the household welfare function, we demonstrate how household's portfolio allocation in stocks changes with family wealth. We examine two types of preference heterogeneity between family members: parameter heterogeneity and functional form heterogeneity. This study offers an alternative explanation of household portfolio choice corresponding with the observation that wealthier households tend to hold greater share of their wealth in risky assets. Specifically, if two decision-makers have standard constant relative risk aversion preference with different relative risk aversions in a household, family's relative risk aversion decreases as household wealth increases (decreasing relative risk aversion).
机译:实际上,股票投资是家庭做出的最重要的决定之一。本文的主要目的是在家庭成员的偏好和基于集体家庭模型的有效风险分担假设下解释家庭投资决策。特别是,通过研究家庭福利函数的绝对(相对)风险规避,我们证明了股票中的家庭投资组合分配是如何随着家庭财富而变化的。我们研究了家庭成员之间的两种偏好异质性:参数异质性和功能形式异质性。这项研究为家庭投资组合的选择提供了另一种解释,与观察到的是,较富裕的家庭倾向于将其财富的较大份额持有于风险资产中。具体而言,如果两个决策者在一个家庭中具有相对恒定的相对风险规避偏好的标准不变相对风险规避偏好,则家庭的相对风险规避会随着家庭财富的增加而减少(相对风险规避减少)。

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