To effectively cope with uncertainty over the life cycle, I propose a new decision model. In particular, the model maximizes a person's welfare that counts not only on consumption of goods and services, but also on total available financial resources over the entire lifetime. In the finance...

To effectively cope with an unexpected, large, and negative income shock, I propose a life-cycle model for income risk management. I analyze the intertemporal consumption-investment problem in an incomplete market. I suggest a hybrid of the martingale approach and the dynamic programming...

In the aftermath of the financial crisis of 2008, there is increased concern about the potentially catastrophic pension default risk, which results in significant decreases in pension benefits. In order to address the challenge of annuity income uncertainty, I propose a dynamic annuitization...

We study optimal trading strategy of a market maker with stock inventory in the presence of short-term market changes, especially changes in trading intensity of market participants and stock volatility. We employ Poisson jump processes in modelling such market condition changes. We provide...

One can find it challenging to deal with verification theorems for optimal consumption and investment problems with annuitization. I pose a tractable framework to prove verification theorems for the problems. I revisit an annuitization model of Park (2015) and prove the verification theorem for...

In this paper, we derive optimal investment policies at the industry portfolio level under the stochastic investment opportunities of dynamic and asymmetric properties. For this purpose, we present a new model of intertemporal dynamic portfolio choice as well as non-myopic optimal consumption...

This study aims to generalize the following result of McDonald and Siegel (1986) on optimal investment: it is optimal for an investor to invest when project cash flows exceed a certain threshold. This study presents other results that refine or extend this one by integrating timing flexibility...