Some new results on aggregate claim amounts from two heterogeneous Marshall–Olkin extended exponential portfolios

Ghobad Barmalzan, Amir. T. Payandeh Najafabadi and Narayanaswamy Balakrishnan

Communications in Statistics - Theory and Methods, 2018, vol. 47, issue 11, 2779-2794

Abstract: In this work, we discuss some stochastic comparisons of two aggregate claim amounts. Applications of our results to the value-at-risk and tail-value-at-risk are also mentioned. It is also shown that the aggregate claim amounts of risks exhibiting a weak form of dependence known as positive cumulative dependence (negatively associated) is larger (smaller) in convex order than the corresponding aggregate claim amounts under the theoretical independence assumption. The obtained results show that the correlations between individual risks increase stop-loss premiums corresponding to aggregate claim amounts. The results established here complete and extend the results of Barmalzan, Payandeh Najafabadi, and Balakrishnan (2017, Theory of Probability and its Applications, to appear).

Date: 2018
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DOI: 10.1080/03610926.2017.1343844

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