Robustly Strategic Consumption–Portfolio Rules with Informational Frictions
Management Science · 2017 · Volume 63 · Issue 12
Abstract
This paper provides a tractable continuous-time, constant absolute risk aversion–Gaussian framework to explore how the interactions of fundamental uncertainty, model uncertainty due to a preference for robustness, and state uncertainty due to information-processing constraints (rational inattention) affect strategic consumption–portfolio rules and precautionary savings in the presence of uninsurable labor income. Specifically, after solving the model explicitly, I compute and compare the elasticities of strategic asset allocation and precautionary savings to risk aversion, robustness, and inattention. Furthermore, for plausibly estimated and calibrated model parameters, I quantitatively analyze how the interactions of model uncertainty and state uncertainty affect the optimal share invested in the risky asset and show that they can provide a potential explanation for the observed stockholding behavior of households with different education and income levels. This paper was accepted by Neng Wang, finance .
Keywords
robustness, model uncertainty, rational inattention, uninsurable labor income, strategic asset allocation, precautionary savings
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