activity
20202026
most citedA Portfolio Choice Problem Under Risk Capacity Constraint

2 citations · 3 across the 9 of their papers we have counts for

collaborators

9 papers

math.OC2026

Stackelberg Games with a Robust Leader

Juan Li, Jianfeng Zhang, Zimu Zhu

In this paper we study a Stackelberg game with one leader and multiple followers. Given the leader's control, the followers solve a Nash game with possibly multiple equilibria. We…

q-fin.MF2026

A General Model for Continuous Time Principal-Agent Problem Under Hidden Action

Jaeyoung Sung, Jianfeng Zhang, Zimu Zhu

In this paper, we study a general continuous-time Principal-Agent (PA) problem, where the agent privately makes effort and consumption decisions over time under a contract with pay…

math.NA2025

DeepPAAC: A New Deep Galerkin Method for Principal-Agent Problems

Michael Ludkovski, Changgen Xie, Zimu Zhu

We consider numerical resolution of principal-agent (PA) problems in continuous time. We formulate a generic PA model with continuous and lump payments and a multi-dimensional stra…

q-fin.PM2025

Optimal Consumption-Investment with Epstein-Zin Utility under Leverage Constraint

Dejian Tian, Weidong Tian, Jianjun Zhou +1

We study optimal portfolio choice under Epstein-Zin recursive utility in the presence of general leverage constraints. We first establish that the optimal value function is the uni…

math.OC2025

Optimal Comfortable Consumption under Epstein-Zin utility

Dejian Tian, Weidong Tian, Jianjun Zhou +1

We solve the optimal portfolio choice problem under Epstein--Zin utility with a time-varying consumption constraint, where closed-form expressions for neither the primal nor the du…

math.PR2022★ 1 cited

Convergence of the Backward Deep BSDE Method with Applications to Optimal Stopping Problems

Chengfan Gao, Siping Gao, Ruimeng Hu +1

The optimal stopping problem is one of the core problems in financial markets, with broad applications such as pricing American and Bermudan options. The deep BSDE method [Han, Jen…

q-fin.PM2022

Smoothness of the Value Function for Optimal Consumption Model with Consumption-Wealth Utility and Borrowing Constraint

Weidong Tian, Zimu Zhu

This paper studies an optimal consumption-investment problem for an investor whose instantaneous utility depends on both consumption and wealth, and the investor faces a general bo…

math.OC2022

A Dynamic Principal Agent Problem with One-sided Commitment

Jianfeng Zhang, Zimu Zhu

In this paper we consider a principal agent problem where the agent is allowed to quit, by incurring a cost. When the current agent quits the job, the principal will hire a new one…

q-fin.PM2020★ 2 cited

A Portfolio Choice Problem Under Risk Capacity Constraint

Weidong Tian, Zimu Zhu

This paper studies an optimal investing problem for a retiree facing longevity risk and living standard risk. We formulate the investing problem as a portfolio choice problem under…