The Obstacle Problem Arising from the American Chooser Option (Submitted for publication)

Gugyum Ha, Junkee Jeon, Jihoon Ok

https://arxiv.org/abs/2506.03623

Finite-Horizon Optima Consumption and Investment with Time-varying Job-switching Costs (Submitted for publication)

Gugyum Ha, Junkee Jeon, Jihoon Ok

https://arxiv.org/abs/2603.08050

Finite-Horizon Portfolio Choice, Labor Supply, and Early Retirement under Borrowing Constraints (Submitted for publication) 

Gugyum Ha, Junkee Jeon, Jihoon Ok

https://arxiv.org/abs/2606.21382