Ambiguity Aversion Type Insurance Company’s Optimal Re-insurance and Investment Strategy - Taking the Chinese Stock Market as an Example
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Abstract
The optimal reinsurance and investment strategy for insurers has always been a topic
worthy of in-depth exploration. However, constrained by actuarial techniques and the uncertainty of
financial markets, the ambiguity of insurers’ model estimates for financial markets and claims processes
should not be overlooked. This paper assumes that insurers exhibit ambiguity aversion to financial markets
and claims processes. Insurers, in the course of their operations, can purchase reinsurance to diversify risks
and invest in risk assets and risk-free assets in the financial market to generate returns. The price process
of risk assets follows the CEV model. Under these conditions, the paper provides analytical solutions
for the insurer’s optimal investment strategy and optimal reinsurance to maximize the insurer’s terminal
wealth utility objective. Additionally, the study incorporates parameter estimation from the Chinese stock
market for numerical analysis.
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