قیمت گذاری دارایی های تنگ قیمت با تخفیف هذلولی تصادفی

This paper examines how the interactions of stochastic hyperbolic discounting and ambiguity affect asset pricing. It is found that stochastic hyperbolic discounting has no effects on the equity premium and can raise or lower the risk-free rate, while ambiguity raises the equity premium and always lowers the risk-free rate. Empirical analysis shows that the equity premium puzzle and the risk-free rate puzzle can be resolved by stochastic hyperbolic discounting and ambiguity, while exponential discounting and ambiguity cannot interpret the risk-free rate puzzle.