Risk modelling on liquidations with Levy processes
APPLIED MATHEMATICS AND COMPUTATION | ELSEVIER SCIENCE INC | Published : 2022
In classical ruin theory, the time of ruin is defined as the time when the surplus of an insurance portfolio falls below zero. This simplification of a single barrier, however, needs careful adaptations to imitate the real-world liquidation process. Inspired by  and , this paper adopts a three-barrier model to describe the financial stress leading to bankruptcy of an insurer. The financial status of the insurer is classified into three states, namely, the solvent, the insolvent, and the liquidated. The insurer's surplus processes at the states of solvent and insolvent are modeled by two spectrally negative Lévy processes, which have been taken as good candidates to model insurance ris..View full abstract
Awarded by National Natural Science Foundation of China
The authors are very grateful to the anonymous referees for their helpful comments on the earlier version of this paper. Wenyuan Wang acknowledges the financial support from the National Natural Science Foundation of China (No.11661074). Ping Chen acknowledges the financial support from the National Natural Science Foundation of China (Nos, 71871071, 72071051).