On the longest/shortest negative excursion of a Lévy risk process and related quantities

M. A. Lkabous and Z. Palmowski

Scandinavian Actuarial Journal, 2025, vol. 2025, issue 4, 367-386

Abstract: In this paper, we analyze some distributions involving the longest and shortest negative excursions of spectrally negative Lévy processes using the binomial expansion approach. More specifically, we study the distributions of such excursions and related quantities such as the joint distribution of the shortest and longest negative excursions and their difference (also known as the range) over a random and infinite horizon time. Our results are applied to address new Parisian ruin problems, stochastic ordering and the number near-maximum distress periods showing the superiority of the binomial expansion approach for such cases.

Date: 2025
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DOI: 10.1080/03461238.2024.2424273

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