Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/36256
Title: Optimal investment of an insurer with regime-switching and risk constraint
Authors: Liu, JZ
Yiu, KFC 
Siu, TK
Keywords: Optimal investment
Entropy risk
Risk constraint
Regime-switching
Model uncertainty
Stochastic differential game
Issue Date: 2014
Publisher: Taylor & Francis Scandinavia
Source: Scandinavian actuarial journal, 2014, v. 2014, no. 7, p. 583-601 How to cite?
Journal: Scandinavian actuarial journal 
Abstract: We investigate an optimal investment problem of an insurance company in the presence of risk constraint and regime-switching using a game theoretic approach. A dynamic risk constraint is considered where we constrain the uncertainty aversion to the 'true' model for financial risk at a given level. We describe the surplus of an insurance company using a general jump process, namely, a Markov-modulated random measure. The insurance company invests the surplus in a risky financial asset whose dynamics are modeled by a regime-switching geometric Brownian motion. To incorporate model uncertainty, we consider a robust approach, where a family of probability measures is cosidered and the insurance company maximizes the expected utility of terminal wealth in the 'worst-case' probability scenario. The optimal investment problem is then formulated as a constrained two-player, zero-sum, stochastic differential game between the insurance company and the market. Different from the other works in the literature, our technique is to transform the problem into a deterministic differential game first, in order to obtain the optimal strategy of the game problem explicitly.
URI: http://hdl.handle.net/10397/36256
ISSN: 0346-1238 (print)
1651-2030 (online)
DOI: 10.1080/03461238.2012.750621
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