Equilibrium Interest Rates and Multiperiod Bonds in a Partially Observable Economy
分析存在不可观测风险的生产交换经济中金融资产的市场均衡，发现均衡利率可作为不可观测因子的最优估计，多期无违约债券则是对该因子变化的最优对冲工具。
ABSTRACT This paper analyzes the market for financial assets in a production and exchange economy with several realized outputs and a single unobservable source of nondiversifiable risk. The paper demonstrates that, for a large class of diffusion outputs and preferences, optimizing consumers first estimate the realizations of the unobservable factor and then use these estimates to determine portfolio and consumption rules. Moreover, the explicit consideration of this unobservable productivity factor affects equilibrium demands and prices. The equilibrium spot rate of interest emerges as the “best estimate” of the unobservable factor, and multiperiod default‐free bonds arise as the optimal hedge for the unobservable changes of the stochastic investment opportunity set.