Optimal stopping of a 2-vector risk process

Volume 90 / 2010

Krzysztof Szajowski Banach Center Publications 90 (2010), 179-191 MSC: Primary 60G40, 60K99; Secondary 90A46. DOI: 10.4064/bc90-0-12


The following problem in risk theory is considered. An insurance company, endowed with an initial capital $a>0$, receives insurance premiums and pays out successive claims from two kind of risks. The losses occur according to a marked point process. At any time the company may broaden or narrow down the offer, which entails the change of the parameters of the underlying risk process. These changes concern the rate of income, the intensity of the renewal process and the distribution of claims. Our goal is to find the best moment for changes which is the moment of maximal value of the capital assets. Based on the representation of stopping times for piecewise deterministic processes and the dynamic programming method the solution is derived for the finite and infinite horizon model.


  • Krzysztof SzajowskiInstitute of Mathematics and Computer Science
    Wrocław University of Technology
    Wybrzeże Wyspiańskiego 27
    Wrocław, Poland
    Institute of Mathematics, Polish Academy of Sciences

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