Optimal Time-Consistent Investment and Reinsurance Strategy Under Time Delay and Risk Dependent Model

Abstract EN

In this paper, we consider the problem of investment and reinsurance with time delay under the compound Poisson model of two-dimensional dependent claims.

Suppose an insurance company controls the claim risk of two kinds of dependent insurance businesses by purchasing proportional reinsurance and invests its wealth in a financial market composed of a risk-free asset and a risk asset.

The risk asset price process obeys the geometric Brownian motion.

By introducing the capital flow related to the historical performance of the insurer, the wealth process described by stochastic delay differential equation (SDDE) is obtained.

The extended HJB equation is obtained by using the stochastic control theory under the framework of game theory.

Under the reinsurance expected premium principle, optimal time-consistent investment and reinsurance strategy and the corresponding value function are obtained.

Finally, the influence of model parameters on the optimal strategy is explained by numerical analysis.